Search for pair-produced neutralinos in events with photons and missing energy from e+e- collisions at √s=130-183 GeV

P. Abreu, T. Adye, P. Adzic, I. Ajinenko, G. D. Alekseev, R. Alemany, P. P. Allport, S. Almehed, U. Amaldi, S. Amato, E. G. Anassontzis, P. Andersson, A. Andreazza, S. Andringa, P. Antilogus, W. D. Apel, Y. Arnoud, B. Åsman, J. E. Augustin, A. Augustinus & 502 others P. Baillon, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D. Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K. H. Becks, M. Begalli, P. Beilliere, Yu Belokopytov, A. C. Benvenuti, C. Berat, M. Berggren, D. Bertini, D. Bertrand, M. Besancon, F. Bianchi, M. Bigi, M. S. Bilenky, M. A. Bizouard, D. Bloch, H. M. Blom, M. Bonesini, W. Bonivento, M. Boonekamp, P. S L Booth, A. W. Borgland, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T. J V Bowcock, I. Boyko, I. Bozovic, M. Bozzo, P. Branchini, T. Brenke, R. A. Brenner, P. Bruckman, J. M. Brunet, L. Bugge, T. Buran, T. Burgsmueller, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, A. J. Camacho Rozas, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M. V. Castillo Gimenez, A. Cattai, F. R. Cavallo, C. Cerruti, V. Chabaud, Ph Charpentier, L. Chaussard, P. Checchia, G. A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, P. Collins, M. Colomer, R. Contri, E. Cortina, G. Cosme, F. Cossutti, J. H. Cowell, H. B. Crawley, D. Crennell, G. Crosetti, J. Cuevas Maestro, S. Czellar, G. Damgaard, M. Davenport, W. da Silva, A. Deghorain, G. Delia Ricca, P. Delpierre, N. Demaria, A. de Angelis, W. de Boer, S. de Brabandere, C. de Clercq, B. de Lotto, A. de Min, L. de Paula, H. Dijkstra, L. di Ciaccio, A. di Diodato, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, A. Duperrin, J. D. Durand, R. Ehret, G. Eigen, T. Ekelof, G. Ekspong, M. Ellert, M. Elsing, J. P. Engel, B. Erzen, M. Espirito Santo, E. Falk, G. Fanourakis, D. Fassouliotis, J. Fayot, M. Feindt, P. Ferrari, A. Ferrer, E. Ferrer-Ribas, S. Fichet, A. Firestone, P. A. Fischer, U. Flagmeyer, H. Foeth, E. Fokitis, F. Fontanelli, B. Franek, A. G. Frodesen, R. Fruhwirth, F. Fulda-Quenzer, J. Fuster, A. Galloni, D. Gamba, S. Gamblin, M. Gandelman, C. Garcia, J. Garcia, C. Gaspar, M. Gaspar, U. Gasparini, Ph Gavillet, E. N. Gazis, D. Gele, J. P. Gerber, L. Gerdyukov, N. Ghodbane, I. Gil, F. Gìege, R. Gokieli, B. Golob, P. Goncalves, I. Gonzalez Caballero, G. Gopal, L. Gorn, M. Gorski, Yu Gouz, V. Gracco, J. Grahl, E. Graziani, C. Green, P. Gris, K. Grzelak, M. Gunther, J. Guy, F. Hahn, S. Hahn, S. Haider, A. Hallgren, K. Hamacher, F. J. Harris, V. Hedberg, S. Heising, J. J. Hernandez, P. Herquet, H. Herr, T. L. Hessing, J. M. Heuser, E. Higon, S. O. Holmgren, P. J. Holt, D. Holthuizen, S. Hoorelbeke, M. Houlden, J. Hrubec, K. Huet, K. Hultqvist, J. N. Jackson, R. Jacobsson, P. Jalocha, R. Janik, C. Jarlskog, G. Jarlskog, P. Jarry, B. Jean-Marie, E. K. Johansson, P. Jonsson, C. Joram, P. Juillot, F. Kapusta, K. Karafasoulis, S. Katsanevas, E. C. Katsoufis, R. Keranen, B. A. Khomenko, N. N. Khovanski, A. Kiiskinen, B. King, N. J. Kjaer, O. Klapp, H. Klein, P. Kluit, D. Knoblauch, P. Kokkinias, M. Koratzinos, V. Kostioukhine, C. Kourkoumelis, O. Kouznetsov, M. Krammer, C. Kreuter, E. Kriznic, J. Krstic, Z. Krumstein, P. Kubinec, W. Kucewicz, K. Kurvinen, J. W. Lamsa, D. W. Lane, P. Langefeld, V. Lapin, J. P. Laugier, R. Lauhakangas, G. Leder, F. Ledroit, V. Lefebure, L. Leinonen, A. Leisos, R. Leitner, J. Lemonne, G. Lenzen, V. Lepeltier, T. Lesiak, M. Lethuillier, J. Libby, D. Liko, A. Lipniacka, I. Lippi, B. Loerstad, J. G. Loken, J. H. Lopes, J. M. Lopez, R. Lopez-Fernandez, D. Loukas, P. Lutz, L. Lyons, J. MacNaughton, J. R. Mahon, A. Maio, A. Malek, T. G M Malmgren, V. Malychev, F. Mandl, J. Marco, R. Marco, B. Marechal, M. Margoni, J. C. Marin, C. Mariotti, A. Markou, C. Martinez-Rivero, F. Martinez-Vidal, S. Marti i Garcia, N. Mastroyiannopoulos, F. Matorras, C. Matteuzzi, G. Matthiae, J. Mazik, F. Mazzucato, M. Mazzucato, M. McCubbin, R. McKay, R. McNulty, G. McPherson, C. Meroni, W. T. Meyer, A. Miagkov, E. Migliore, L. Mirabito, W. A. Mitaroff, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M. R. Monge, X. Moreau, P. Morettini, G. Morton, U. Mueller, K. Muenich, M. Mulders, C. Mulet-Marquis, R. Muresan, W. J. Murray, B. Muryn, G. Myatt, T. Myklebust, F. Naraghi, F. L. Navarria, S. Navas, K. Nawrocki, P. Negri, N. Neufeld, N. Neumeister, R. Nicolaidou, B. S. Nielsen, V. Nikolaenko, M. Nikolenko, V. Nomokonov, A. Normand, A. Nygren, V. Obraztsov, A. G. Olshevski, A. Onofre, R. Orava, G. Orazi, K. Osterberg, A. Ouraou, M. Paganoni, S. Paiano, R. Pain, R. Paiva, J. Palacios, H. Palka, T. D. Papadopoulou, K. Papageorgiou, L. Pape, C. Parkes, F. Parodi, U. Parzefall, A. Passeri, O. Passon, M. Pegoraro, L. Peralta, M. Pernicka, A. Perrotta, C. Petridou, A. Petrolini, H. T. Phillips, G. Piana, F. Pierre, M. Pimenta, E. Piotto, T. Podobnik, M. E. Pol, G. Polok, P. Poropat, V. Pozdniakov, P. Privitera, N. Pukhaeva, A. Pullia, D. Radojicic, S. Ragazzi, H. Rahmani, D. Rakoczy, P. N. Ratoff, A. L. Read, P. Rebecchi, N. G. Redaelli, M. Regler, D. Reid, R. Reinhardt, P. B. Renton, L. K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, O. Rohne, A. Romero, P. Ronchese, E. I. Rosenberg, P. Rosinsky, P. Roudeau, T. Rovelli, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, H. Schneider, Ph Schwemling, U. Schwickerath, M. A E Schyns, F. Scuri, P. Seager, Y. Sedykh, A. M. Segar, R. Sekulin, R. C. Shellard, A. Sheridan, M. Siebel, R. Silvestre, L. Simard, F. Simonetto, A. N. Sisakian, T. B. Skaali, G. Smadja, O. Smirnova, G. R. Smith, A. Sokolov, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, P. Sponholz, S. Squarcia, D. Stampfer, C. Stanescu, S. Stanic, S. Stapnes, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, O. Tchikilev, F. Tegenfeldt, F. Terranova, J. Thomas, A. Tilquin, J. Timmermans, L. G. Tkatchev, T. Todorov, S. Todorova, D. Z. Toet, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, G. Transtromer, D. Treille, G. Tristram, C. Troncon, A. Tsirou, M. L. Turluer, I. A. Tyapkin, S. Tzamarias, B. Ueberschaer, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, G. W. van Apeldoorn, P. van Dam, W. K. van Doninck, J. van Eldik, A. van Lysebetten, I. van Vulpen, N. Vassilopoulos, G. Vegni, L. Ventura, W. Venus, F. Verbeure, M. Verlato, L. S. Vertogradov, V. Verzi, D. Vilanova, L. Vitale, E. Vlasov, A. S. Vodopyanov, G. Voulgaris, V. Vrba, H. Wahlen, C. Walck, C. Weiser, D. Wicke, J. H. Wickens, G. R. Wilkinson, M. Winter, M. Witek, G. Wolf, J. Yi, O. Yushchenko, A. Zalewska, P. Zalewski, D. Zavrtanik, E. Zevgolatakos, N. I. Zimin, G. C. Zucchelli, G. Zumerle

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The events with two photons and missing (transverse) energy collected by the DELPHI detector at centre-of-mass energies between 130 GeV and 183 GeV have been studied to search for processes of the type e+e- → YY with the subsequent decay Y → Xγ, where X is an undetectable neutral particle. Reactions of this kind are expected in supersymmetric models, where the Y particle can be either the lightest neutralino, decaying to a photon and a gravitino, or the next-to-lightest neutralino, decaying to a photon and the lightest neutralino. To study the case of long-lived Y particles, a search for single-photon events with the reconstructed photon axis pointing far from the beam interaction region has also been performed. No evidence for a deviation from Standard Model expectations has been observed in the data and upper limits have been derived on the signal cross-section as a function of the the X and Y masses and of the Y mean decay path.

Original languageEnglish
Pages (from-to)371-384
Number of pages14
JournalEuropean Physical Journal C
Volume6
Issue number3
Publication statusPublished - 1999

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collisions
photons
energy
beam interactions
gravitinos
neutral particles
decay
center of mass
deviation
detectors
cross sections

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Abreu, P., Adye, T., Adzic, P., Ajinenko, I., Alekseev, G. D., Alemany, R., ... Zumerle, G. (1999). Search for pair-produced neutralinos in events with photons and missing energy from e+e- collisions at √s=130-183 GeV. European Physical Journal C, 6(3), 371-384.

Search for pair-produced neutralinos in events with photons and missing energy from e+e- collisions at √s=130-183 GeV. / Abreu, P.; Adye, T.; Adzic, P.; Ajinenko, I.; Alekseev, G. D.; Alemany, R.; Allport, P. P.; Almehed, S.; Amaldi, U.; Amato, S.; Anassontzis, E. G.; Andersson, P.; Andreazza, A.; Andringa, S.; Antilogus, P.; Apel, W. D.; Arnoud, Y.; Åsman, B.; Augustin, J. E.; Augustinus, A.; Baillon, P.; Bambade, P.; Barao, F.; Barbiellini, G.; Barbier, R.; Bardin, D. Y.; Barker, G.; Baroncelli, A.; Battaglia, M.; Baubillier, M.; Becks, K. H.; Begalli, M.; Beilliere, P.; Belokopytov, Yu; Benvenuti, A. C.; Berat, C.; Berggren, M.; Bertini, D.; Bertrand, D.; Besancon, M.; Bianchi, F.; Bigi, M.; Bilenky, M. S.; Bizouard, M. A.; Bloch, D.; Blom, H. M.; Bonesini, M.; Bonivento, W.; Boonekamp, M.; Booth, P. S L; Borgland, A. W.; Borisov, G.; Bosio, C.; Botner, O.; Boudinov, E.; Bouquet, B.; Bourdarios, C.; Bowcock, T. J V; Boyko, I.; Bozovic, I.; Bozzo, M.; Branchini, P.; Brenke, T.; Brenner, R. A.; Bruckman, P.; Brunet, J. M.; Bugge, L.; Buran, T.; Burgsmueller, T.; Buschmann, P.; Cabrera, S.; Caccia, M.; Calvi, M.; Camacho Rozas, A. J.; Camporesi, T.; Canale, V.; Carena, F.; Carroll, L.; Caso, C.; Castillo Gimenez, M. V.; Cattai, A.; Cavallo, F. R.; Cerruti, C.; Chabaud, V.; Charpentier, Ph; Chaussard, L.; Checchia, P.; Chelkov, G. A.; Chierici, R.; Chliapnikov, P.; Chochula, P.; Chorowicz, V.; Chudoba, J.; Collins, P.; Colomer, M.; Contri, R.; Cortina, E.; Cosme, G.; Cossutti, F.; Cowell, J. H.; Crawley, H. B.; Crennell, D.; Crosetti, G.; Cuevas Maestro, J.; Czellar, S.; Damgaard, G.; Davenport, M.; da Silva, W.; Deghorain, A.; Delia Ricca, G.; Delpierre, P.; Demaria, N.; de Angelis, A.; de Boer, W.; de Brabandere, S.; de Clercq, C.; de Lotto, B.; de Min, A.; de Paula, L.; Dijkstra, H.; di Ciaccio, L.; di Diodato, A.; Dolbeau, J.; Doroba, K.; Dracos, M.; Drees, J.; Dris, M.; Duperrin, A.; Durand, J. D.; Ehret, R.; Eigen, G.; Ekelof, T.; Ekspong, G.; Ellert, M.; Elsing, M.; Engel, J. P.; Erzen, B.; Espirito Santo, M.; Falk, E.; Fanourakis, G.; Fassouliotis, D.; Fayot, J.; Feindt, M.; Ferrari, P.; Ferrer, A.; Ferrer-Ribas, E.; Fichet, S.; Firestone, A.; Fischer, P. A.; Flagmeyer, U.; Foeth, H.; Fokitis, E.; Fontanelli, F.; Franek, B.; Frodesen, A. G.; Fruhwirth, R.; Fulda-Quenzer, F.; Fuster, J.; Galloni, A.; Gamba, D.; Gamblin, S.; Gandelman, M.; Garcia, C.; Garcia, J.; Gaspar, C.; Gaspar, M.; Gasparini, U.; Gavillet, Ph; Gazis, E. N.; Gele, D.; Gerber, J. P.; Gerdyukov, L.; Ghodbane, N.; Gil, I.; Gìege, F.; Gokieli, R.; Golob, B.; Goncalves, P.; Gonzalez Caballero, I.; Gopal, G.; Gorn, L.; Gorski, M.; Gouz, Yu; Gracco, V.; Grahl, J.; Graziani, E.; Green, C.; Gris, P.; Grzelak, K.; Gunther, M.; Guy, J.; Hahn, F.; Hahn, S.; Haider, S.; Hallgren, A.; Hamacher, K.; Harris, F. J.; Hedberg, V.; Heising, S.; Hernandez, J. J.; Herquet, P.; Herr, H.; Hessing, T. L.; Heuser, J. M.; Higon, E.; Holmgren, S. O.; Holt, P. J.; Holthuizen, D.; Hoorelbeke, S.; Houlden, M.; Hrubec, J.; Huet, K.; Hultqvist, K.; Jackson, J. N.; Jacobsson, R.; Jalocha, P.; Janik, R.; Jarlskog, C.; Jarlskog, G.; Jarry, P.; Jean-Marie, B.; Johansson, E. K.; Jonsson, P.; Joram, C.; Juillot, P.; Kapusta, F.; Karafasoulis, K.; Katsanevas, S.; Katsoufis, E. C.; Keranen, R.; Khomenko, B. A.; Khovanski, N. N.; Kiiskinen, A.; King, B.; Kjaer, N. J.; Klapp, O.; Klein, H.; Kluit, P.; Knoblauch, D.; Kokkinias, P.; Koratzinos, M.; Kostioukhine, V.; Kourkoumelis, C.; Kouznetsov, O.; Krammer, M.; Kreuter, C.; Kriznic, E.; Krstic, J.; Krumstein, Z.; Kubinec, P.; Kucewicz, W.; Kurvinen, K.; Lamsa, J. W.; Lane, D. W.; Langefeld, P.; Lapin, V.; Laugier, J. P.; Lauhakangas, R.; Leder, G.; Ledroit, F.; Lefebure, V.; Leinonen, L.; Leisos, A.; Leitner, R.; Lemonne, J.; Lenzen, G.; Lepeltier, V.; Lesiak, T.; Lethuillier, M.; Libby, J.; Liko, D.; Lipniacka, A.; Lippi, I.; Loerstad, B.; Loken, J. G.; Lopes, J. H.; Lopez, J. M.; Lopez-Fernandez, R.; Loukas, D.; Lutz, P.; Lyons, L.; MacNaughton, J.; Mahon, J. R.; Maio, A.; Malek, A.; Malmgren, T. G M; Malychev, V.; Mandl, F.; Marco, J.; Marco, R.; Marechal, B.; Margoni, M.; Marin, J. C.; Mariotti, C.; Markou, A.; Martinez-Rivero, C.; Martinez-Vidal, F.; Marti i Garcia, S.; Mastroyiannopoulos, N.; Matorras, F.; Matteuzzi, C.; Matthiae, G.; Mazik, J.; Mazzucato, F.; Mazzucato, M.; McCubbin, M.; McKay, R.; McNulty, R.; McPherson, G.; Meroni, C.; Meyer, W. T.; Miagkov, A.; Migliore, E.; Mirabito, L.; Mitaroff, W. A.; Mjoernmark, U.; Moa, T.; Moeller, R.; Moenig, K.; Monge, M. R.; Moreau, X.; Morettini, P.; Morton, G.; Mueller, U.; Muenich, K.; Mulders, M.; Mulet-Marquis, C.; Muresan, R.; Murray, W. J.; Muryn, B.; Myatt, G.; Myklebust, T.; Naraghi, F.; Navarria, F. L.; Navas, S.; Nawrocki, K.; Negri, P.; Neufeld, N.; Neumeister, N.; Nicolaidou, R.; Nielsen, B. S.; Nikolaenko, V.; Nikolenko, M.; Nomokonov, V.; Normand, A.; Nygren, A.; Obraztsov, V.; Olshevski, A. G.; Onofre, A.; Orava, R.; Orazi, G.; Osterberg, K.; Ouraou, A.; Paganoni, M.; Paiano, S.; Pain, R.; Paiva, R.; Palacios, J.; Palka, H.; Papadopoulou, T. D.; Papageorgiou, K.; Pape, L.; Parkes, C.; Parodi, F.; Parzefall, U.; Passeri, A.; Passon, O.; Pegoraro, M.; Peralta, L.; Pernicka, M.; Perrotta, A.; Petridou, C.; Petrolini, A.; Phillips, H. T.; Piana, G.; Pierre, F.; Pimenta, M.; Piotto, E.; Podobnik, T.; Pol, M. E.; Polok, G.; Poropat, P.; Pozdniakov, V.; Privitera, P.; Pukhaeva, N.; Pullia, A.; Radojicic, D.; Ragazzi, S.; Rahmani, H.; Rakoczy, D.; Ratoff, P. N.; Read, A. L.; Rebecchi, P.; Redaelli, N. G.; Regler, M.; Reid, D.; Reinhardt, R.; Renton, P. B.; Resvanis, L. K.; Richard, F.; Ridky, J.; Rinaudo, G.; Rohne, O.; Romero, A.; Ronchese, P.; Rosenberg, E. I.; Rosinsky, P.; Roudeau, P.; Rovelli, T.; Ruhlmann-Kleider, V.; Ruiz, A.; Saarikko, H.; Sacquin, Y.; Sadovsky, A.; Sajot, G.; Salt, J.; Sampsonidis, D.; Sannino, M.; Schneider, H.; Schwemling, Ph; Schwickerath, U.; Schyns, M. A E; Scuri, F.; Seager, P.; Sedykh, Y.; Segar, A. M.; Sekulin, R.; Shellard, R. C.; Sheridan, A.; Siebel, M.; Silvestre, R.; Simard, L.; Simonetto, F.; Sisakian, A. N.; Skaali, T. B.; Smadja, G.; Smirnova, O.; Smith, G. R.; Sokolov, A.; Sopczak, A.; Sosnowski, R.; Spassov, T.; Spiriti, E.; Sponholz, P.; Squarcia, S.; Stampfer, D.; Stanescu, C.; Stanic, S.; Stapnes, S.; Stevenson, K.; Stocchi, A.; Strauss, J.; Strub, R.; Stugu, B.; Szczekowski, M.; Szeptycka, M.; Tabarelli, T.; Tchikilev, O.; Tegenfeldt, F.; Terranova, F.; Thomas, J.; Tilquin, A.; Timmermans, J.; Tkatchev, L. G.; Todorov, T.; Todorova, S.; Toet, D. Z.; Tomaradze, A.; Tome, B.; Tonazzo, A.; Tortora, L.; Transtromer, G.; Treille, D.; Tristram, G.; Troncon, C.; Tsirou, A.; Turluer, M. L.; Tyapkin, I. A.; Tzamarias, S.; Ueberschaer, B.; Ullaland, O.; Uvarov, V.; Valenti, G.; Vallazza, E.; van Apeldoorn, G. W.; van Dam, P.; van Doninck, W. K.; van Eldik, J.; van Lysebetten, A.; van Vulpen, I.; Vassilopoulos, N.; Vegni, G.; Ventura, L.; Venus, W.; Verbeure, F.; Verlato, M.; Vertogradov, L. S.; Verzi, V.; Vilanova, D.; Vitale, L.; Vlasov, E.; Vodopyanov, A. S.; Voulgaris, G.; Vrba, V.; Wahlen, H.; Walck, C.; Weiser, C.; Wicke, D.; Wickens, J. H.; Wilkinson, G. R.; Winter, M.; Witek, M.; Wolf, G.; Yi, J.; Yushchenko, O.; Zalewska, A.; Zalewski, P.; Zavrtanik, D.; Zevgolatakos, E.; Zimin, N. I.; Zucchelli, G. C.; Zumerle, G.

In: European Physical Journal C, Vol. 6, No. 3, 1999, p. 371-384.

Research output: Contribution to journalArticle

Abreu, P, Adye, T, Adzic, P, Ajinenko, I, Alekseev, GD, Alemany, R, Allport, PP, Almehed, S, Amaldi, U, Amato, S, Anassontzis, EG, Andersson, P, Andreazza, A, Andringa, S, Antilogus, P, Apel, WD, Arnoud, Y, Åsman, B, Augustin, JE, Augustinus, A, Baillon, P, Bambade, P, Barao, F, Barbiellini, G, Barbier, R, Bardin, DY, Barker, G, Baroncelli, A, Battaglia, M, Baubillier, M, Becks, KH, Begalli, M, Beilliere, P, Belokopytov, Y, Benvenuti, AC, Berat, C, Berggren, M, Bertini, D, Bertrand, D, Besancon, M, Bianchi, F, Bigi, M, Bilenky, MS, Bizouard, MA, Bloch, D, Blom, HM, Bonesini, M, Bonivento, W, Boonekamp, M, Booth, PSL, Borgland, AW, Borisov, G, Bosio, C, Botner, O, Boudinov, E, Bouquet, B, Bourdarios, C, Bowcock, TJV, Boyko, I, Bozovic, I, Bozzo, M, Branchini, P, Brenke, T, Brenner, RA, Bruckman, P, Brunet, JM, Bugge, L, Buran, T, Burgsmueller, T, Buschmann, P, Cabrera, S, Caccia, M, Calvi, M, Camacho Rozas, AJ, Camporesi, T, Canale, V, Carena, F, Carroll, L, Caso, C, Castillo Gimenez, MV, Cattai, A, Cavallo, FR, Cerruti, C, Chabaud, V, Charpentier, P, Chaussard, L, Checchia, P, Chelkov, GA, Chierici, R, Chliapnikov, P, Chochula, P, Chorowicz, V, Chudoba, J, Collins, P, Colomer, M, Contri, R, Cortina, E, Cosme, G, Cossutti, F, Cowell, JH, Crawley, HB, Crennell, D, Crosetti, G, Cuevas Maestro, J, Czellar, S, Damgaard, G, Davenport, M, da Silva, W, Deghorain, A, Delia Ricca, G, Delpierre, P, Demaria, N, de Angelis, A, de Boer, W, de Brabandere, S, de Clercq, C, de Lotto, B, de Min, A, de Paula, L, Dijkstra, H, di Ciaccio, L, di Diodato, A, Dolbeau, J, Doroba, K, Dracos, M, Drees, J, Dris, M, Duperrin, A, Durand, JD, Ehret, R, Eigen, G, Ekelof, T, Ekspong, G, Ellert, M, Elsing, M, Engel, JP, Erzen, B, Espirito Santo, M, Falk, E, Fanourakis, G, Fassouliotis, D, Fayot, J, Feindt, M, Ferrari, P, Ferrer, A, Ferrer-Ribas, E, Fichet, S, Firestone, A, Fischer, PA, Flagmeyer, U, Foeth, H, Fokitis, E, Fontanelli, F, Franek, B, Frodesen, AG, Fruhwirth, R, Fulda-Quenzer, F, Fuster, J, Galloni, A, Gamba, D, Gamblin, S, Gandelman, M, Garcia, C, Garcia, J, Gaspar, C, Gaspar, M, Gasparini, U, Gavillet, P, Gazis, EN, Gele, D, Gerber, JP, Gerdyukov, L, Ghodbane, N, Gil, I, Gìege, F, Gokieli, R, Golob, B, Goncalves, P, Gonzalez Caballero, I, Gopal, G, Gorn, L, Gorski, M, Gouz, Y, Gracco, V, Grahl, J, Graziani, E, Green, C, Gris, P, Grzelak, K, Gunther, M, Guy, J, Hahn, F, Hahn, S, Haider, S, Hallgren, A, Hamacher, K, Harris, FJ, Hedberg, V, Heising, S, Hernandez, JJ, Herquet, P, Herr, H, Hessing, TL, Heuser, JM, Higon, E, Holmgren, SO, Holt, PJ, Holthuizen, D, Hoorelbeke, S, Houlden, M, Hrubec, J, Huet, K, Hultqvist, K, Jackson, JN, Jacobsson, R, Jalocha, P, Janik, R, Jarlskog, C, Jarlskog, G, Jarry, P, Jean-Marie, B, Johansson, EK, Jonsson, P, Joram, C, Juillot, P, Kapusta, F, Karafasoulis, K, Katsanevas, S, Katsoufis, EC, Keranen, R, Khomenko, BA, Khovanski, NN, Kiiskinen, A, King, B, Kjaer, NJ, Klapp, O, Klein, H, Kluit, P, Knoblauch, D, Kokkinias, P, Koratzinos, M, Kostioukhine, V, Kourkoumelis, C, Kouznetsov, O, Krammer, M, Kreuter, C, Kriznic, E, Krstic, J, Krumstein, Z, Kubinec, P, Kucewicz, W, Kurvinen, K, Lamsa, JW, Lane, DW, Langefeld, P, Lapin, V, Laugier, JP, Lauhakangas, R, Leder, G, Ledroit, F, Lefebure, V, Leinonen, L, Leisos, A, Leitner, R, Lemonne, J, Lenzen, G, Lepeltier, V, Lesiak, T, Lethuillier, M, Libby, J, Liko, D, Lipniacka, A, Lippi, I, Loerstad, B, Loken, JG, Lopes, JH, Lopez, JM, Lopez-Fernandez, R, Loukas, D, Lutz, P, Lyons, L, MacNaughton, J, Mahon, JR, Maio, A, Malek, A, Malmgren, TGM, Malychev, V, Mandl, F, Marco, J, Marco, R, Marechal, B, Margoni, M, Marin, JC, Mariotti, C, Markou, A, Martinez-Rivero, C, Martinez-Vidal, F, Marti i Garcia, S, Mastroyiannopoulos, N, Matorras, F, Matteuzzi, C, Matthiae, G, Mazik, J, Mazzucato, F, Mazzucato, M, McCubbin, M, McKay, R, McNulty, R, McPherson, G, Meroni, C, Meyer, WT, Miagkov, A, Migliore, E, Mirabito, L, Mitaroff, WA, Mjoernmark, U, Moa, T, Moeller, R, Moenig, K, Monge, MR, Moreau, X, Morettini, P, Morton, G, Mueller, U, Muenich, K, Mulders, M, Mulet-Marquis, C, Muresan, R, Murray, WJ, Muryn, B, Myatt, G, Myklebust, T, Naraghi, F, Navarria, FL, Navas, S, Nawrocki, K, Negri, P, Neufeld, N, Neumeister, N, Nicolaidou, R, Nielsen, BS, Nikolaenko, V, Nikolenko, M, Nomokonov, V, Normand, A, Nygren, A, Obraztsov, V, Olshevski, AG, Onofre, A, Orava, R, Orazi, G, Osterberg, K, Ouraou, A, Paganoni, M, Paiano, S, Pain, R, Paiva, R, Palacios, J, Palka, H, Papadopoulou, TD, Papageorgiou, K, Pape, L, Parkes, C, Parodi, F, Parzefall, U, Passeri, A, Passon, O, Pegoraro, M, Peralta, L, Pernicka, M, Perrotta, A, Petridou, C, Petrolini, A, Phillips, HT, Piana, G, Pierre, F, Pimenta, M, Piotto, E, Podobnik, T, Pol, ME, Polok, G, Poropat, P, Pozdniakov, V, Privitera, P, Pukhaeva, N, Pullia, A, Radojicic, D, Ragazzi, S, Rahmani, H, Rakoczy, D, Ratoff, PN, Read, AL, Rebecchi, P, Redaelli, NG, Regler, M, Reid, D, Reinhardt, R, Renton, PB, Resvanis, LK, Richard, F, Ridky, J, Rinaudo, G, Rohne, O, Romero, A, Ronchese, P, Rosenberg, EI, Rosinsky, P, Roudeau, P, Rovelli, T, Ruhlmann-Kleider, V, Ruiz, A, Saarikko, H, Sacquin, Y, Sadovsky, A, Sajot, G, Salt, J, Sampsonidis, D, Sannino, M, Schneider, H, Schwemling, P, Schwickerath, U, Schyns, MAE, Scuri, F, Seager, P, Sedykh, Y, Segar, AM, Sekulin, R, Shellard, RC, Sheridan, A, Siebel, M, Silvestre, R, Simard, L, Simonetto, F, Sisakian, AN, Skaali, TB, Smadja, G, Smirnova, O, Smith, GR, Sokolov, A, Sopczak, A, Sosnowski, R, Spassov, T, Spiriti, E, Sponholz, P, Squarcia, S, Stampfer, D, Stanescu, C, Stanic, S, Stapnes, S, Stevenson, K, Stocchi, A, Strauss, J, Strub, R, Stugu, B, Szczekowski, M, Szeptycka, M, Tabarelli, T, Tchikilev, O, Tegenfeldt, F, Terranova, F, Thomas, J, Tilquin, A, Timmermans, J, Tkatchev, LG, Todorov, T, Todorova, S, Toet, DZ, Tomaradze, A, Tome, B, Tonazzo, A, Tortora, L, Transtromer, G, Treille, D, Tristram, G, Troncon, C, Tsirou, A, Turluer, ML, Tyapkin, IA, Tzamarias, S, Ueberschaer, B, Ullaland, O, Uvarov, V, Valenti, G, Vallazza, E, van Apeldoorn, GW, van Dam, P, van Doninck, WK, van Eldik, J, van Lysebetten, A, van Vulpen, I, Vassilopoulos, N, Vegni, G, Ventura, L, Venus, W, Verbeure, F, Verlato, M, Vertogradov, LS, Verzi, V, Vilanova, D, Vitale, L, Vlasov, E, Vodopyanov, AS, Voulgaris, G, Vrba, V, Wahlen, H, Walck, C, Weiser, C, Wicke, D, Wickens, JH, Wilkinson, GR, Winter, M, Witek, M, Wolf, G, Yi, J, Yushchenko, O, Zalewska, A, Zalewski, P, Zavrtanik, D, Zevgolatakos, E, Zimin, NI, Zucchelli, GC & Zumerle, G 1999, 'Search for pair-produced neutralinos in events with photons and missing energy from e+e- collisions at √s=130-183 GeV', European Physical Journal C, vol. 6, no. 3, pp. 371-384.
Abreu, P. ; Adye, T. ; Adzic, P. ; Ajinenko, I. ; Alekseev, G. D. ; Alemany, R. ; Allport, P. P. ; Almehed, S. ; Amaldi, U. ; Amato, S. ; Anassontzis, E. G. ; Andersson, P. ; Andreazza, A. ; Andringa, S. ; Antilogus, P. ; Apel, W. D. ; Arnoud, Y. ; Åsman, B. ; Augustin, J. E. ; Augustinus, A. ; Baillon, P. ; Bambade, P. ; Barao, F. ; Barbiellini, G. ; Barbier, R. ; Bardin, D. Y. ; Barker, G. ; Baroncelli, A. ; Battaglia, M. ; Baubillier, M. ; Becks, K. H. ; Begalli, M. ; Beilliere, P. ; Belokopytov, Yu ; Benvenuti, A. C. ; Berat, C. ; Berggren, M. ; Bertini, D. ; Bertrand, D. ; Besancon, M. ; Bianchi, F. ; Bigi, M. ; Bilenky, M. S. ; Bizouard, M. A. ; Bloch, D. ; Blom, H. M. ; Bonesini, M. ; Bonivento, W. ; Boonekamp, M. ; Booth, P. S L ; Borgland, A. W. ; Borisov, G. ; Bosio, C. ; Botner, O. ; Boudinov, E. ; Bouquet, B. ; Bourdarios, C. ; Bowcock, T. J V ; Boyko, I. ; Bozovic, I. ; Bozzo, M. ; Branchini, P. ; Brenke, T. ; Brenner, R. A. ; Bruckman, P. ; Brunet, J. M. ; Bugge, L. ; Buran, T. ; Burgsmueller, T. ; Buschmann, P. ; Cabrera, S. ; Caccia, M. ; Calvi, M. ; Camacho Rozas, A. J. ; Camporesi, T. ; Canale, V. ; Carena, F. ; Carroll, L. ; Caso, C. ; Castillo Gimenez, M. V. ; Cattai, A. ; Cavallo, F. R. ; Cerruti, C. ; Chabaud, V. ; Charpentier, Ph ; Chaussard, L. ; Checchia, P. ; Chelkov, G. A. ; Chierici, R. ; Chliapnikov, P. ; Chochula, P. ; Chorowicz, V. ; Chudoba, J. ; Collins, P. ; Colomer, M. ; Contri, R. ; Cortina, E. ; Cosme, G. ; Cossutti, F. ; Cowell, J. H. ; Crawley, H. B. ; Crennell, D. ; Crosetti, G. ; Cuevas Maestro, J. ; Czellar, S. ; Damgaard, G. ; Davenport, M. ; da Silva, W. ; Deghorain, A. ; Delia Ricca, G. ; Delpierre, P. ; Demaria, N. ; de Angelis, A. ; de Boer, W. ; de Brabandere, S. ; de Clercq, C. ; de Lotto, B. ; de Min, A. ; de Paula, L. ; Dijkstra, H. ; di Ciaccio, L. ; di Diodato, A. ; Dolbeau, J. ; Doroba, K. ; Dracos, M. ; Drees, J. ; Dris, M. ; Duperrin, A. ; Durand, J. D. ; Ehret, R. ; Eigen, G. ; Ekelof, T. ; Ekspong, G. ; Ellert, M. ; Elsing, M. ; Engel, J. P. ; Erzen, B. ; Espirito Santo, M. ; Falk, E. ; Fanourakis, G. ; Fassouliotis, D. ; Fayot, J. ; Feindt, M. ; Ferrari, P. ; Ferrer, A. ; Ferrer-Ribas, E. ; Fichet, S. ; Firestone, A. ; Fischer, P. A. ; Flagmeyer, U. ; Foeth, H. ; Fokitis, E. ; Fontanelli, F. ; Franek, B. ; Frodesen, A. G. ; Fruhwirth, R. ; Fulda-Quenzer, F. ; Fuster, J. ; Galloni, A. ; Gamba, D. ; Gamblin, S. ; Gandelman, M. ; Garcia, C. ; Garcia, J. ; Gaspar, C. ; Gaspar, M. ; Gasparini, U. ; Gavillet, Ph ; Gazis, E. N. ; Gele, D. ; Gerber, J. P. ; Gerdyukov, L. ; Ghodbane, N. ; Gil, I. ; Gìege, F. ; Gokieli, R. ; Golob, B. ; Goncalves, P. ; Gonzalez Caballero, I. ; Gopal, G. ; Gorn, L. ; Gorski, M. ; Gouz, Yu ; Gracco, V. ; Grahl, J. ; Graziani, E. ; Green, C. ; Gris, P. ; Grzelak, K. ; Gunther, M. ; Guy, J. ; Hahn, F. ; Hahn, S. ; Haider, S. ; Hallgren, A. ; Hamacher, K. ; Harris, F. J. ; Hedberg, V. ; Heising, S. ; Hernandez, J. J. ; Herquet, P. ; Herr, H. ; Hessing, T. L. ; Heuser, J. M. ; Higon, E. ; Holmgren, S. O. ; Holt, P. J. ; Holthuizen, D. ; Hoorelbeke, S. ; Houlden, M. ; Hrubec, J. ; Huet, K. ; Hultqvist, K. ; Jackson, J. N. ; Jacobsson, R. ; Jalocha, P. ; Janik, R. ; Jarlskog, C. ; Jarlskog, G. ; Jarry, P. ; Jean-Marie, B. ; Johansson, E. K. ; Jonsson, P. ; Joram, C. ; Juillot, P. ; Kapusta, F. ; Karafasoulis, K. ; Katsanevas, S. ; Katsoufis, E. C. ; Keranen, R. ; Khomenko, B. A. ; Khovanski, N. N. ; Kiiskinen, A. ; King, B. ; Kjaer, N. J. ; Klapp, O. ; Klein, H. ; Kluit, P. ; Knoblauch, D. ; Kokkinias, P. ; Koratzinos, M. ; Kostioukhine, V. ; Kourkoumelis, C. ; Kouznetsov, O. ; Krammer, M. ; Kreuter, C. ; Kriznic, E. ; Krstic, J. ; Krumstein, Z. ; Kubinec, P. ; Kucewicz, W. ; Kurvinen, K. ; Lamsa, J. W. ; Lane, D. W. ; Langefeld, P. ; Lapin, V. ; Laugier, J. P. ; Lauhakangas, R. ; Leder, G. ; Ledroit, F. ; Lefebure, V. ; Leinonen, L. ; Leisos, A. ; Leitner, R. ; Lemonne, J. ; Lenzen, G. ; Lepeltier, V. ; Lesiak, T. ; Lethuillier, M. ; Libby, J. ; Liko, D. ; Lipniacka, A. ; Lippi, I. ; Loerstad, B. ; Loken, J. G. ; Lopes, J. H. ; Lopez, J. M. ; Lopez-Fernandez, R. ; Loukas, D. ; Lutz, P. ; Lyons, L. ; MacNaughton, J. ; Mahon, J. R. ; Maio, A. ; Malek, A. ; Malmgren, T. G M ; Malychev, V. ; Mandl, F. ; Marco, J. ; Marco, R. ; Marechal, B. ; Margoni, M. ; Marin, J. C. ; Mariotti, C. ; Markou, A. ; Martinez-Rivero, C. ; Martinez-Vidal, F. ; Marti i Garcia, S. ; Mastroyiannopoulos, N. ; Matorras, F. ; Matteuzzi, C. ; Matthiae, G. ; Mazik, J. ; Mazzucato, F. ; Mazzucato, M. ; McCubbin, M. ; McKay, R. ; McNulty, R. ; McPherson, G. ; Meroni, C. ; Meyer, W. T. ; Miagkov, A. ; Migliore, E. ; Mirabito, L. ; Mitaroff, W. A. ; Mjoernmark, U. ; Moa, T. ; Moeller, R. ; Moenig, K. ; Monge, M. R. ; Moreau, X. ; Morettini, P. ; Morton, G. ; Mueller, U. ; Muenich, K. ; Mulders, M. ; Mulet-Marquis, C. ; Muresan, R. ; Murray, W. J. ; Muryn, B. ; Myatt, G. ; Myklebust, T. ; Naraghi, F. ; Navarria, F. L. ; Navas, S. ; Nawrocki, K. ; Negri, P. ; Neufeld, N. ; Neumeister, N. ; Nicolaidou, R. ; Nielsen, B. S. ; Nikolaenko, V. ; Nikolenko, M. ; Nomokonov, V. ; Normand, A. ; Nygren, A. ; Obraztsov, V. ; Olshevski, A. G. ; Onofre, A. ; Orava, R. ; Orazi, G. ; Osterberg, K. ; Ouraou, A. ; Paganoni, M. ; Paiano, S. ; Pain, R. ; Paiva, R. ; Palacios, J. ; Palka, H. ; Papadopoulou, T. D. ; Papageorgiou, K. ; Pape, L. ; Parkes, C. ; Parodi, F. ; Parzefall, U. ; Passeri, A. ; Passon, O. ; Pegoraro, M. ; Peralta, L. ; Pernicka, M. ; Perrotta, A. ; Petridou, C. ; Petrolini, A. ; Phillips, H. T. ; Piana, G. ; Pierre, F. ; Pimenta, M. ; Piotto, E. ; Podobnik, T. ; Pol, M. E. ; Polok, G. ; Poropat, P. ; Pozdniakov, V. ; Privitera, P. ; Pukhaeva, N. ; Pullia, A. ; Radojicic, D. ; Ragazzi, S. ; Rahmani, H. ; Rakoczy, D. ; Ratoff, P. N. ; Read, A. L. ; Rebecchi, P. ; Redaelli, N. G. ; Regler, M. ; Reid, D. ; Reinhardt, R. ; Renton, P. B. ; Resvanis, L. K. ; Richard, F. ; Ridky, J. ; Rinaudo, G. ; Rohne, O. ; Romero, A. ; Ronchese, P. ; Rosenberg, E. I. ; Rosinsky, P. ; Roudeau, P. ; Rovelli, T. ; Ruhlmann-Kleider, V. ; Ruiz, A. ; Saarikko, H. ; Sacquin, Y. ; Sadovsky, A. ; Sajot, G. ; Salt, J. ; Sampsonidis, D. ; Sannino, M. ; Schneider, H. ; Schwemling, Ph ; Schwickerath, U. ; Schyns, M. A E ; Scuri, F. ; Seager, P. ; Sedykh, Y. ; Segar, A. M. ; Sekulin, R. ; Shellard, R. C. ; Sheridan, A. ; Siebel, M. ; Silvestre, R. ; Simard, L. ; Simonetto, F. ; Sisakian, A. N. ; Skaali, T. B. ; Smadja, G. ; Smirnova, O. ; Smith, G. R. ; Sokolov, A. ; Sopczak, A. ; Sosnowski, R. ; Spassov, T. ; Spiriti, E. ; Sponholz, P. ; Squarcia, S. ; Stampfer, D. ; Stanescu, C. ; Stanic, S. ; Stapnes, S. ; Stevenson, K. ; Stocchi, A. ; Strauss, J. ; Strub, R. ; Stugu, B. ; Szczekowski, M. ; Szeptycka, M. ; Tabarelli, T. ; Tchikilev, O. ; Tegenfeldt, F. ; Terranova, F. ; Thomas, J. ; Tilquin, A. ; Timmermans, J. ; Tkatchev, L. G. ; Todorov, T. ; Todorova, S. ; Toet, D. Z. ; Tomaradze, A. ; Tome, B. ; Tonazzo, A. ; Tortora, L. ; Transtromer, G. ; Treille, D. ; Tristram, G. ; Troncon, C. ; Tsirou, A. ; Turluer, M. L. ; Tyapkin, I. A. ; Tzamarias, S. ; Ueberschaer, B. ; Ullaland, O. ; Uvarov, V. ; Valenti, G. ; Vallazza, E. ; van Apeldoorn, G. W. ; van Dam, P. ; van Doninck, W. K. ; van Eldik, J. ; van Lysebetten, A. ; van Vulpen, I. ; Vassilopoulos, N. ; Vegni, G. ; Ventura, L. ; Venus, W. ; Verbeure, F. ; Verlato, M. ; Vertogradov, L. S. ; Verzi, V. ; Vilanova, D. ; Vitale, L. ; Vlasov, E. ; Vodopyanov, A. S. ; Voulgaris, G. ; Vrba, V. ; Wahlen, H. ; Walck, C. ; Weiser, C. ; Wicke, D. ; Wickens, J. H. ; Wilkinson, G. R. ; Winter, M. ; Witek, M. ; Wolf, G. ; Yi, J. ; Yushchenko, O. ; Zalewska, A. ; Zalewski, P. ; Zavrtanik, D. ; Zevgolatakos, E. ; Zimin, N. I. ; Zucchelli, G. C. ; Zumerle, G. / Search for pair-produced neutralinos in events with photons and missing energy from e+e- collisions at √s=130-183 GeV. In: European Physical Journal C. 1999 ; Vol. 6, No. 3. pp. 371-384.
@article{3f7871b24f6d41439f2c0b8f7d921515,
title = "Search for pair-produced neutralinos in events with photons and missing energy from e+e- collisions at √s=130-183 GeV",
abstract = "The events with two photons and missing (transverse) energy collected by the DELPHI detector at centre-of-mass energies between 130 GeV and 183 GeV have been studied to search for processes of the type e+e- → YY with the subsequent decay Y → Xγ, where X is an undetectable neutral particle. Reactions of this kind are expected in supersymmetric models, where the Y particle can be either the lightest neutralino, decaying to a photon and a gravitino, or the next-to-lightest neutralino, decaying to a photon and the lightest neutralino. To study the case of long-lived Y particles, a search for single-photon events with the reconstructed photon axis pointing far from the beam interaction region has also been performed. No evidence for a deviation from Standard Model expectations has been observed in the data and upper limits have been derived on the signal cross-section as a function of the the X and Y masses and of the Y mean decay path.",
author = "P. Abreu and T. Adye and P. Adzic and I. Ajinenko and Alekseev, {G. D.} and R. Alemany and Allport, {P. P.} and S. Almehed and U. Amaldi and S. Amato and Anassontzis, {E. G.} and P. Andersson and A. Andreazza and S. Andringa and P. Antilogus and Apel, {W. D.} and Y. Arnoud and B. {\AA}sman and Augustin, {J. E.} and A. Augustinus and P. Baillon and P. Bambade and F. Barao and G. Barbiellini and R. Barbier and Bardin, {D. Y.} and G. Barker and A. Baroncelli and M. Battaglia and M. Baubillier and Becks, {K. H.} and M. Begalli and P. Beilliere and Yu Belokopytov and Benvenuti, {A. C.} and C. Berat and M. Berggren and D. Bertini and D. Bertrand and M. Besancon and F. Bianchi and M. Bigi and Bilenky, {M. S.} and Bizouard, {M. A.} and D. Bloch and Blom, {H. M.} and M. Bonesini and W. Bonivento and M. Boonekamp and Booth, {P. S L} and Borgland, {A. W.} and G. Borisov and C. Bosio and O. Botner and E. Boudinov and B. Bouquet and C. Bourdarios and Bowcock, {T. J V} and I. Boyko and I. Bozovic and M. Bozzo and P. Branchini and T. Brenke and Brenner, {R. A.} and P. Bruckman and Brunet, {J. M.} and L. Bugge and T. Buran and T. Burgsmueller and P. Buschmann and S. Cabrera and M. Caccia and M. Calvi and {Camacho Rozas}, {A. J.} and T. Camporesi and V. Canale and F. Carena and L. Carroll and C. Caso and {Castillo Gimenez}, {M. V.} and A. Cattai and Cavallo, {F. R.} and C. Cerruti and V. Chabaud and Ph Charpentier and L. Chaussard and P. Checchia and Chelkov, {G. A.} and R. Chierici and P. Chliapnikov and P. Chochula and V. Chorowicz and J. Chudoba and P. Collins and M. Colomer and R. Contri and E. Cortina and G. Cosme and F. Cossutti and Cowell, {J. H.} and Crawley, {H. B.} and D. Crennell and G. Crosetti and {Cuevas Maestro}, J. and S. Czellar and G. Damgaard and M. Davenport and {da Silva}, W. and A. Deghorain and {Delia Ricca}, G. and P. Delpierre and N. Demaria and {de Angelis}, A. and {de Boer}, W. and {de Brabandere}, S. and {de Clercq}, C. and {de Lotto}, B. and {de Min}, A. and {de Paula}, L. and H. Dijkstra and {di Ciaccio}, L. and {di Diodato}, A. and J. Dolbeau and K. Doroba and M. Dracos and J. Drees and M. Dris and A. Duperrin and Durand, {J. D.} and R. Ehret and G. Eigen and T. Ekelof and G. Ekspong and M. Ellert and M. Elsing and Engel, {J. P.} and B. Erzen and {Espirito Santo}, M. and E. Falk and G. Fanourakis and D. Fassouliotis and J. Fayot and M. Feindt and P. Ferrari and A. Ferrer and E. Ferrer-Ribas and S. Fichet and A. Firestone and Fischer, {P. A.} and U. Flagmeyer and H. Foeth and E. Fokitis and F. Fontanelli and B. Franek and Frodesen, {A. G.} and R. Fruhwirth and F. Fulda-Quenzer and J. Fuster and A. Galloni and D. Gamba and S. Gamblin and M. Gandelman and C. Garcia and J. Garcia and C. Gaspar and M. Gaspar and U. Gasparini and Ph Gavillet and Gazis, {E. N.} and D. Gele and Gerber, {J. P.} and L. Gerdyukov and N. Ghodbane and I. Gil and F. G{\`i}ege and R. Gokieli and B. Golob and P. Goncalves and {Gonzalez Caballero}, I. and G. Gopal and L. Gorn and M. Gorski and Yu Gouz and V. Gracco and J. Grahl and E. Graziani and C. Green and P. Gris and K. Grzelak and M. Gunther and J. Guy and F. Hahn and S. Hahn and S. Haider and A. Hallgren and K. Hamacher and Harris, {F. J.} and V. Hedberg and S. Heising and Hernandez, {J. J.} and P. Herquet and H. Herr and Hessing, {T. L.} and Heuser, {J. M.} and E. Higon and Holmgren, {S. O.} and Holt, {P. J.} and D. Holthuizen and S. Hoorelbeke and M. Houlden and J. Hrubec and K. Huet and K. Hultqvist and Jackson, {J. N.} and R. Jacobsson and P. Jalocha and R. Janik and C. Jarlskog and G. Jarlskog and P. Jarry and B. Jean-Marie and Johansson, {E. K.} and P. Jonsson and C. Joram and P. Juillot and F. Kapusta and K. Karafasoulis and S. Katsanevas and Katsoufis, {E. C.} and R. Keranen and Khomenko, {B. A.} and Khovanski, {N. N.} and A. Kiiskinen and B. King and Kjaer, {N. J.} and O. Klapp and H. Klein and P. Kluit and D. Knoblauch and P. Kokkinias and M. Koratzinos and V. Kostioukhine and C. Kourkoumelis and O. Kouznetsov and M. Krammer and C. Kreuter and E. Kriznic and J. Krstic and Z. Krumstein and P. Kubinec and W. Kucewicz and K. Kurvinen and Lamsa, {J. W.} and Lane, {D. W.} and P. Langefeld and V. Lapin and Laugier, {J. P.} and R. Lauhakangas and G. Leder and F. Ledroit and V. Lefebure and L. Leinonen and A. Leisos and R. Leitner and J. Lemonne and G. Lenzen and V. Lepeltier and T. Lesiak and M. Lethuillier and J. Libby and D. Liko and A. Lipniacka and I. Lippi and B. Loerstad and Loken, {J. G.} and Lopes, {J. H.} and Lopez, {J. M.} and R. Lopez-Fernandez and D. Loukas and P. Lutz and L. Lyons and J. MacNaughton and Mahon, {J. R.} and A. Maio and A. Malek and Malmgren, {T. G M} and V. Malychev and F. Mandl and J. Marco and R. Marco and B. Marechal and M. Margoni and Marin, {J. C.} and C. Mariotti and A. Markou and C. Martinez-Rivero and F. Martinez-Vidal and {Marti i Garcia}, S. and N. Mastroyiannopoulos and F. Matorras and C. Matteuzzi and G. Matthiae and J. Mazik and F. Mazzucato and M. Mazzucato and M. McCubbin and R. McKay and R. McNulty and G. McPherson and C. Meroni and Meyer, {W. T.} and A. Miagkov and E. Migliore and L. Mirabito and Mitaroff, {W. A.} and U. Mjoernmark and T. Moa and R. Moeller and K. Moenig and Monge, {M. R.} and X. Moreau and P. Morettini and G. Morton and U. Mueller and K. Muenich and M. Mulders and C. Mulet-Marquis and R. Muresan and Murray, {W. J.} and B. Muryn and G. Myatt and T. Myklebust and F. Naraghi and Navarria, {F. L.} and S. Navas and K. Nawrocki and P. Negri and N. Neufeld and N. Neumeister and R. Nicolaidou and Nielsen, {B. S.} and V. Nikolaenko and M. Nikolenko and V. Nomokonov and A. Normand and A. Nygren and V. Obraztsov and Olshevski, {A. G.} and A. Onofre and R. Orava and G. Orazi and K. Osterberg and A. Ouraou and M. Paganoni and S. Paiano and R. Pain and R. Paiva and J. Palacios and H. Palka and Papadopoulou, {T. D.} and K. Papageorgiou and L. Pape and C. Parkes and F. Parodi and U. Parzefall and A. Passeri and O. Passon and M. Pegoraro and L. Peralta and M. Pernicka and A. Perrotta and C. Petridou and A. Petrolini and Phillips, {H. T.} and G. Piana and F. Pierre and M. Pimenta and E. Piotto and T. Podobnik and Pol, {M. E.} and G. Polok and P. Poropat and V. Pozdniakov and P. Privitera and N. Pukhaeva and A. Pullia and D. Radojicic and S. Ragazzi and H. Rahmani and D. Rakoczy and Ratoff, {P. N.} and Read, {A. L.} and P. Rebecchi and Redaelli, {N. G.} and M. Regler and D. Reid and R. Reinhardt and Renton, {P. B.} and Resvanis, {L. K.} and F. Richard and J. Ridky and G. Rinaudo and O. Rohne and A. Romero and P. Ronchese and Rosenberg, {E. I.} and P. Rosinsky and P. Roudeau and T. Rovelli and V. Ruhlmann-Kleider and A. Ruiz and H. Saarikko and Y. Sacquin and A. Sadovsky and G. Sajot and J. Salt and D. Sampsonidis and M. Sannino and H. Schneider and Ph Schwemling and U. Schwickerath and Schyns, {M. A E} and F. Scuri and P. Seager and Y. Sedykh and Segar, {A. M.} and R. Sekulin and Shellard, {R. C.} and A. Sheridan and M. Siebel and R. Silvestre and L. Simard and F. Simonetto and Sisakian, {A. N.} and Skaali, {T. B.} and G. Smadja and O. Smirnova and Smith, {G. R.} and A. Sokolov and A. Sopczak and R. Sosnowski and T. Spassov and E. Spiriti and P. Sponholz and S. Squarcia and D. Stampfer and C. Stanescu and S. Stanic and S. Stapnes and K. Stevenson and A. Stocchi and J. Strauss and R. Strub and B. Stugu and M. Szczekowski and M. Szeptycka and T. Tabarelli and O. Tchikilev and F. Tegenfeldt and F. Terranova and J. Thomas and A. Tilquin and J. Timmermans and Tkatchev, {L. G.} and T. Todorov and S. Todorova and Toet, {D. Z.} and A. Tomaradze and B. Tome and A. Tonazzo and L. Tortora and G. Transtromer and D. Treille and G. Tristram and C. Troncon and A. Tsirou and Turluer, {M. L.} and Tyapkin, {I. A.} and S. Tzamarias and B. Ueberschaer and O. Ullaland and V. Uvarov and G. Valenti and E. Vallazza and {van Apeldoorn}, {G. W.} and {van Dam}, P. and {van Doninck}, {W. K.} and {van Eldik}, J. and {van Lysebetten}, A. and {van Vulpen}, I. and N. Vassilopoulos and G. Vegni and L. Ventura and W. Venus and F. Verbeure and M. Verlato and Vertogradov, {L. S.} and V. Verzi and D. Vilanova and L. Vitale and E. Vlasov and Vodopyanov, {A. S.} and G. Voulgaris and V. Vrba and H. Wahlen and C. Walck and C. Weiser and D. Wicke and Wickens, {J. H.} and Wilkinson, {G. R.} and M. Winter and M. Witek and G. Wolf and J. Yi and O. Yushchenko and A. Zalewska and P. Zalewski and D. Zavrtanik and E. Zevgolatakos and Zimin, {N. I.} and Zucchelli, {G. C.} and G. Zumerle",
year = "1999",
language = "English",
volume = "6",
pages = "371--384",
journal = "European Physical Journal C",
issn = "1434-6044",
number = "3",

}

TY - JOUR

T1 - Search for pair-produced neutralinos in events with photons and missing energy from e+e- collisions at √s=130-183 GeV

AU - Abreu, P.

AU - Adye, T.

AU - Adzic, P.

AU - Ajinenko, I.

AU - Alekseev, G. D.

AU - Alemany, R.

AU - Allport, P. P.

AU - Almehed, S.

AU - Amaldi, U.

AU - Amato, S.

AU - Anassontzis, E. G.

AU - Andersson, P.

AU - Andreazza, A.

AU - Andringa, S.

AU - Antilogus, P.

AU - Apel, W. D.

AU - Arnoud, Y.

AU - Åsman, B.

AU - Augustin, J. E.

AU - Augustinus, A.

AU - Baillon, P.

AU - Bambade, P.

AU - Barao, F.

AU - Barbiellini, G.

AU - Barbier, R.

AU - Bardin, D. Y.

AU - Barker, G.

AU - Baroncelli, A.

AU - Battaglia, M.

AU - Baubillier, M.

AU - Becks, K. H.

AU - Begalli, M.

AU - Beilliere, P.

AU - Belokopytov, Yu

AU - Benvenuti, A. C.

AU - Berat, C.

AU - Berggren, M.

AU - Bertini, D.

AU - Bertrand, D.

AU - Besancon, M.

AU - Bianchi, F.

AU - Bigi, M.

AU - Bilenky, M. S.

AU - Bizouard, M. A.

AU - Bloch, D.

AU - Blom, H. M.

AU - Bonesini, M.

AU - Bonivento, W.

AU - Boonekamp, M.

AU - Booth, P. S L

AU - Borgland, A. W.

AU - Borisov, G.

AU - Bosio, C.

AU - Botner, O.

AU - Boudinov, E.

AU - Bouquet, B.

AU - Bourdarios, C.

AU - Bowcock, T. J V

AU - Boyko, I.

AU - Bozovic, I.

AU - Bozzo, M.

AU - Branchini, P.

AU - Brenke, T.

AU - Brenner, R. A.

AU - Bruckman, P.

AU - Brunet, J. M.

AU - Bugge, L.

AU - Buran, T.

AU - Burgsmueller, T.

AU - Buschmann, P.

AU - Cabrera, S.

AU - Caccia, M.

AU - Calvi, M.

AU - Camacho Rozas, A. J.

AU - Camporesi, T.

AU - Canale, V.

AU - Carena, F.

AU - Carroll, L.

AU - Caso, C.

AU - Castillo Gimenez, M. V.

AU - Cattai, A.

AU - Cavallo, F. R.

AU - Cerruti, C.

AU - Chabaud, V.

AU - Charpentier, Ph

AU - Chaussard, L.

AU - Checchia, P.

AU - Chelkov, G. A.

AU - Chierici, R.

AU - Chliapnikov, P.

AU - Chochula, P.

AU - Chorowicz, V.

AU - Chudoba, J.

AU - Collins, P.

AU - Colomer, M.

AU - Contri, R.

AU - Cortina, E.

AU - Cosme, G.

AU - Cossutti, F.

AU - Cowell, J. H.

AU - Crawley, H. B.

AU - Crennell, D.

AU - Crosetti, G.

AU - Cuevas Maestro, J.

AU - Czellar, S.

AU - Damgaard, G.

AU - Davenport, M.

AU - da Silva, W.

AU - Deghorain, A.

AU - Delia Ricca, G.

AU - Delpierre, P.

AU - Demaria, N.

AU - de Angelis, A.

AU - de Boer, W.

AU - de Brabandere, S.

AU - de Clercq, C.

AU - de Lotto, B.

AU - de Min, A.

AU - de Paula, L.

AU - Dijkstra, H.

AU - di Ciaccio, L.

AU - di Diodato, A.

AU - Dolbeau, J.

AU - Doroba, K.

AU - Dracos, M.

AU - Drees, J.

AU - Dris, M.

AU - Duperrin, A.

AU - Durand, J. D.

AU - Ehret, R.

AU - Eigen, G.

AU - Ekelof, T.

AU - Ekspong, G.

AU - Ellert, M.

AU - Elsing, M.

AU - Engel, J. P.

AU - Erzen, B.

AU - Espirito Santo, M.

AU - Falk, E.

AU - Fanourakis, G.

AU - Fassouliotis, D.

AU - Fayot, J.

AU - Feindt, M.

AU - Ferrari, P.

AU - Ferrer, A.

AU - Ferrer-Ribas, E.

AU - Fichet, S.

AU - Firestone, A.

AU - Fischer, P. A.

AU - Flagmeyer, U.

AU - Foeth, H.

AU - Fokitis, E.

AU - Fontanelli, F.

AU - Franek, B.

AU - Frodesen, A. G.

AU - Fruhwirth, R.

AU - Fulda-Quenzer, F.

AU - Fuster, J.

AU - Galloni, A.

AU - Gamba, D.

AU - Gamblin, S.

AU - Gandelman, M.

AU - Garcia, C.

AU - Garcia, J.

AU - Gaspar, C.

AU - Gaspar, M.

AU - Gasparini, U.

AU - Gavillet, Ph

AU - Gazis, E. N.

AU - Gele, D.

AU - Gerber, J. P.

AU - Gerdyukov, L.

AU - Ghodbane, N.

AU - Gil, I.

AU - Gìege, F.

AU - Gokieli, R.

AU - Golob, B.

AU - Goncalves, P.

AU - Gonzalez Caballero, I.

AU - Gopal, G.

AU - Gorn, L.

AU - Gorski, M.

AU - Gouz, Yu

AU - Gracco, V.

AU - Grahl, J.

AU - Graziani, E.

AU - Green, C.

AU - Gris, P.

AU - Grzelak, K.

AU - Gunther, M.

AU - Guy, J.

AU - Hahn, F.

AU - Hahn, S.

AU - Haider, S.

AU - Hallgren, A.

AU - Hamacher, K.

AU - Harris, F. J.

AU - Hedberg, V.

AU - Heising, S.

AU - Hernandez, J. J.

AU - Herquet, P.

AU - Herr, H.

AU - Hessing, T. L.

AU - Heuser, J. M.

AU - Higon, E.

AU - Holmgren, S. O.

AU - Holt, P. J.

AU - Holthuizen, D.

AU - Hoorelbeke, S.

AU - Houlden, M.

AU - Hrubec, J.

AU - Huet, K.

AU - Hultqvist, K.

AU - Jackson, J. N.

AU - Jacobsson, R.

AU - Jalocha, P.

AU - Janik, R.

AU - Jarlskog, C.

AU - Jarlskog, G.

AU - Jarry, P.

AU - Jean-Marie, B.

AU - Johansson, E. K.

AU - Jonsson, P.

AU - Joram, C.

AU - Juillot, P.

AU - Kapusta, F.

AU - Karafasoulis, K.

AU - Katsanevas, S.

AU - Katsoufis, E. C.

AU - Keranen, R.

AU - Khomenko, B. A.

AU - Khovanski, N. N.

AU - Kiiskinen, A.

AU - King, B.

AU - Kjaer, N. J.

AU - Klapp, O.

AU - Klein, H.

AU - Kluit, P.

AU - Knoblauch, D.

AU - Kokkinias, P.

AU - Koratzinos, M.

AU - Kostioukhine, V.

AU - Kourkoumelis, C.

AU - Kouznetsov, O.

AU - Krammer, M.

AU - Kreuter, C.

AU - Kriznic, E.

AU - Krstic, J.

AU - Krumstein, Z.

AU - Kubinec, P.

AU - Kucewicz, W.

AU - Kurvinen, K.

AU - Lamsa, J. W.

AU - Lane, D. W.

AU - Langefeld, P.

AU - Lapin, V.

AU - Laugier, J. P.

AU - Lauhakangas, R.

AU - Leder, G.

AU - Ledroit, F.

AU - Lefebure, V.

AU - Leinonen, L.

AU - Leisos, A.

AU - Leitner, R.

AU - Lemonne, J.

AU - Lenzen, G.

AU - Lepeltier, V.

AU - Lesiak, T.

AU - Lethuillier, M.

AU - Libby, J.

AU - Liko, D.

AU - Lipniacka, A.

AU - Lippi, I.

AU - Loerstad, B.

AU - Loken, J. G.

AU - Lopes, J. H.

AU - Lopez, J. M.

AU - Lopez-Fernandez, R.

AU - Loukas, D.

AU - Lutz, P.

AU - Lyons, L.

AU - MacNaughton, J.

AU - Mahon, J. R.

AU - Maio, A.

AU - Malek, A.

AU - Malmgren, T. G M

AU - Malychev, V.

AU - Mandl, F.

AU - Marco, J.

AU - Marco, R.

AU - Marechal, B.

AU - Margoni, M.

AU - Marin, J. C.

AU - Mariotti, C.

AU - Markou, A.

AU - Martinez-Rivero, C.

AU - Martinez-Vidal, F.

AU - Marti i Garcia, S.

AU - Mastroyiannopoulos, N.

AU - Matorras, F.

AU - Matteuzzi, C.

AU - Matthiae, G.

AU - Mazik, J.

AU - Mazzucato, F.

AU - Mazzucato, M.

AU - McCubbin, M.

AU - McKay, R.

AU - McNulty, R.

AU - McPherson, G.

AU - Meroni, C.

AU - Meyer, W. T.

AU - Miagkov, A.

AU - Migliore, E.

AU - Mirabito, L.

AU - Mitaroff, W. A.

AU - Mjoernmark, U.

AU - Moa, T.

AU - Moeller, R.

AU - Moenig, K.

AU - Monge, M. R.

AU - Moreau, X.

AU - Morettini, P.

AU - Morton, G.

AU - Mueller, U.

AU - Muenich, K.

AU - Mulders, M.

AU - Mulet-Marquis, C.

AU - Muresan, R.

AU - Murray, W. J.

AU - Muryn, B.

AU - Myatt, G.

AU - Myklebust, T.

AU - Naraghi, F.

AU - Navarria, F. L.

AU - Navas, S.

AU - Nawrocki, K.

AU - Negri, P.

AU - Neufeld, N.

AU - Neumeister, N.

AU - Nicolaidou, R.

AU - Nielsen, B. S.

AU - Nikolaenko, V.

AU - Nikolenko, M.

AU - Nomokonov, V.

AU - Normand, A.

AU - Nygren, A.

AU - Obraztsov, V.

AU - Olshevski, A. G.

AU - Onofre, A.

AU - Orava, R.

AU - Orazi, G.

AU - Osterberg, K.

AU - Ouraou, A.

AU - Paganoni, M.

AU - Paiano, S.

AU - Pain, R.

AU - Paiva, R.

AU - Palacios, J.

AU - Palka, H.

AU - Papadopoulou, T. D.

AU - Papageorgiou, K.

AU - Pape, L.

AU - Parkes, C.

AU - Parodi, F.

AU - Parzefall, U.

AU - Passeri, A.

AU - Passon, O.

AU - Pegoraro, M.

AU - Peralta, L.

AU - Pernicka, M.

AU - Perrotta, A.

AU - Petridou, C.

AU - Petrolini, A.

AU - Phillips, H. T.

AU - Piana, G.

AU - Pierre, F.

AU - Pimenta, M.

AU - Piotto, E.

AU - Podobnik, T.

AU - Pol, M. E.

AU - Polok, G.

AU - Poropat, P.

AU - Pozdniakov, V.

AU - Privitera, P.

AU - Pukhaeva, N.

AU - Pullia, A.

AU - Radojicic, D.

AU - Ragazzi, S.

AU - Rahmani, H.

AU - Rakoczy, D.

AU - Ratoff, P. N.

AU - Read, A. L.

AU - Rebecchi, P.

AU - Redaelli, N. G.

AU - Regler, M.

AU - Reid, D.

AU - Reinhardt, R.

AU - Renton, P. B.

AU - Resvanis, L. K.

AU - Richard, F.

AU - Ridky, J.

AU - Rinaudo, G.

AU - Rohne, O.

AU - Romero, A.

AU - Ronchese, P.

AU - Rosenberg, E. I.

AU - Rosinsky, P.

AU - Roudeau, P.

AU - Rovelli, T.

AU - Ruhlmann-Kleider, V.

AU - Ruiz, A.

AU - Saarikko, H.

AU - Sacquin, Y.

AU - Sadovsky, A.

AU - Sajot, G.

AU - Salt, J.

AU - Sampsonidis, D.

AU - Sannino, M.

AU - Schneider, H.

AU - Schwemling, Ph

AU - Schwickerath, U.

AU - Schyns, M. A E

AU - Scuri, F.

AU - Seager, P.

AU - Sedykh, Y.

AU - Segar, A. M.

AU - Sekulin, R.

AU - Shellard, R. C.

AU - Sheridan, A.

AU - Siebel, M.

AU - Silvestre, R.

AU - Simard, L.

AU - Simonetto, F.

AU - Sisakian, A. N.

AU - Skaali, T. B.

AU - Smadja, G.

AU - Smirnova, O.

AU - Smith, G. R.

AU - Sokolov, A.

AU - Sopczak, A.

AU - Sosnowski, R.

AU - Spassov, T.

AU - Spiriti, E.

AU - Sponholz, P.

AU - Squarcia, S.

AU - Stampfer, D.

AU - Stanescu, C.

AU - Stanic, S.

AU - Stapnes, S.

AU - Stevenson, K.

AU - Stocchi, A.

AU - Strauss, J.

AU - Strub, R.

AU - Stugu, B.

AU - Szczekowski, M.

AU - Szeptycka, M.

AU - Tabarelli, T.

AU - Tchikilev, O.

AU - Tegenfeldt, F.

AU - Terranova, F.

AU - Thomas, J.

AU - Tilquin, A.

AU - Timmermans, J.

AU - Tkatchev, L. G.

AU - Todorov, T.

AU - Todorova, S.

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PY - 1999

Y1 - 1999

N2 - The events with two photons and missing (transverse) energy collected by the DELPHI detector at centre-of-mass energies between 130 GeV and 183 GeV have been studied to search for processes of the type e+e- → YY with the subsequent decay Y → Xγ, where X is an undetectable neutral particle. Reactions of this kind are expected in supersymmetric models, where the Y particle can be either the lightest neutralino, decaying to a photon and a gravitino, or the next-to-lightest neutralino, decaying to a photon and the lightest neutralino. To study the case of long-lived Y particles, a search for single-photon events with the reconstructed photon axis pointing far from the beam interaction region has also been performed. No evidence for a deviation from Standard Model expectations has been observed in the data and upper limits have been derived on the signal cross-section as a function of the the X and Y masses and of the Y mean decay path.

AB - The events with two photons and missing (transverse) energy collected by the DELPHI detector at centre-of-mass energies between 130 GeV and 183 GeV have been studied to search for processes of the type e+e- → YY with the subsequent decay Y → Xγ, where X is an undetectable neutral particle. Reactions of this kind are expected in supersymmetric models, where the Y particle can be either the lightest neutralino, decaying to a photon and a gravitino, or the next-to-lightest neutralino, decaying to a photon and the lightest neutralino. To study the case of long-lived Y particles, a search for single-photon events with the reconstructed photon axis pointing far from the beam interaction region has also been performed. No evidence for a deviation from Standard Model expectations has been observed in the data and upper limits have been derived on the signal cross-section as a function of the the X and Y masses and of the Y mean decay path.

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M3 - Article

VL - 6

SP - 371

EP - 384

JO - European Physical Journal C

JF - European Physical Journal C

SN - 1434-6044

IS - 3

ER -