A study of W+W-γ events at LEP

G. Abbiendi, C. Ainsley, P. F. Åkesson, G. Alexander, J. Allison, P. Amaral, G. Anagnostou, K. J. Anderson, S. Arcelli, S. Asai, D. Axen, G. Azuelos, I. Bailey, E. Barberio, R. J. Barlow, R. J. Batley, P. Bechtle, T. Behnke, K. W. Bell, P. J. BellG. Bella, A. Bellerive, G. Benelli, S. Bethke, O. Biebel, O. Boeriu, P. Bock, M. Boutemeur, S. Braibant, L. Brigliadori, R. M. Brown, K. Buesser, H. J. Burckhart, S. Campana, R. K. Carnegie, B. Caron, A. A. Carter, J. R. Carter, C. Y. Chang-, D. G. Charlton, A. Csilling, M. Cuffiani, S. Dado, A. De Roeck, E. A. De Wolf, K. Desch, B. Dienes, M. Donkers, J. Dubbert, E. Duchovni, G. Duckeck, I. P. Duerdoth, E. Etzion, F. Fabbri, L. Felď, P. Ferrari, F. Fiedler, I. Fleck, M. Ford, A. Frey, A. Fürtjes, P. Gagnon, J. W. Gary, G. Gaycken, C. Geich-Gimbel, G. Giacomelli, P. Giacomelli, M. Giunta, J. Goldberg, E. Gross, J. Grunhaus, M. Gruwé, P. O. Günther, A. Gupta, C. Hajdú, M. Hamann, G. G. Hanson, K. Harder, A. Harel, M. Harin-Dirac, M. Hauschild, C. M. Hawkes, R. Hawkings, R. J. Hemingway, C. Hensel, G. Herten, R. D. Heuer, J. C. Hill, K. Hoffman, D. Horváth, P. Igo-Kemenes, K. Ishii, H. Jeremie, P. Jovanovic, T. R. Junk, N. Kanaya, J. Kanzaki, G. Karapetian, D. Karlen, K. Kawagoe, T. Kawamoto, R. K. Keeler, R. G. Kellogg, B. W. Kennedy, D. H. Kim, K. Klein, A. Klier, S. Kluth, T. Kobayashi, M. Kobel, S. Komamiya, L. Kormos, T. Krämer, P. Krieger, J. von Krogh, K. Kruger, T. Kuhl, M. Kupper, G. D. Lafferty, H. Landsman, D. Lanske, J. G. Layter, A. Leins, D. Lellouch, J. Letts, L. Levinson, J. Lillich, S. L. Lloyd, F. K. Loebinger, J. Lu, J. Ludwig, A. Macpherson, W. Mader, S. Marcellini, A. J. Martin, G. Masetti, T. Mashimo, P. Mättig, W. J. McDonald, J. McKenna, T. J. McMahon, R. A. McPherson, F. Meijers, W. Menges, F. S. Merritt, H. Mes, A. Michelini, S. Mihara, G. Mikenberg, D. J. Miller, S. Moed, W. Mohr, T. Mori, A. Mutter, K. Nagai, I. Nakamura, H. Nanjo, H. A. Neal, R. Nisius, S. W. O'Neale, A. Oh, A. Okpara, M. J. Oreglia, S. Orito, C. Pahl, G. Pásztor, J. R. Pater, G. N. Patrick, J. E. Pilcher, J. Pinfold, D. E. Plane, B. Poli, J. Polok, O. Pooth, M. Przybycień, A. Quadt, K. Rabbertz, C. Rembser, P. Renkel, J. M. Roney, S. Rosati, Y. Rozen, K. Runge, K. Sachs, T. Saeki, E. K G Sarkisyan, A. D. Schaile, O. Schaile, P. Scharff-Hansen, J. Schieck, T. Schörner-Sadenius, M. Schröder, M. Schumacher, C. Schwick, W. G. Scott, R. Seuster, T. G. Shears, B. C. Shen, P. Sherwood, G. Siroli, A. Skuja, A. M. Smith, R. Sobie, S. Söldner-Rembold, F. Spano, A. Stahl, K. Stephens, D. Strom, R. Ströhmer, S. Tarem, M. Tasevsky, R. J. Taylor, R. Teuscher, M. A. Thomson, E. Torrence, D. Toya, P. Tran, I. Trigger, Z. Trócsányi, E. Tsur, M. F. Turner-Watson, I. Ueda, B. Újvári, C. F. Vollmer, P. Vannerem, R. Vértesi, M. Verzocchi, H. Voss, J. Vossebeld, D. Waller, C. P. Ward, D. R. Ward, P. M. Watkins, A. T. Watson, N. K. Watson, P. S. Wells, T. Wengler, N. Wermes, D. Wetterling, G. W. Wilson, J. A. Wilson, G. Wolf, T. R. Wyatt, S. Yamashita, D. Zer-Zion, L. Zivkovic

Research output: Article

23 Citations (Scopus)

Abstract

A study of W+W- events accompanied by hard photon radiation, Eγ > 2.5 GeV, produced in e+e- collisions at LEP is presented. Events consistent with being two on-shell W-bosons and an isolated photon are selected from 681 pb-1 of data recorded at 180 GeV <√s <209 GeV. From the sample of 187 selected W+W-γ candidates with photon energies greater than 2.5 GeV, the W+W-γ cross-section is determined at five values of √s. The results are consistent with the Standard Model expectation. Averaging over all energies, the ratio of the observed cross-section to the Standard Model expectation is R(data/SM) = 0.99 ± 0.09 ± 0.04, where the errors represent the statistical and systematic uncertainties respectively. These data provide constraints on the related O(α) systematic uncertainties on the measurement of the W-boson mass at LEP. Finally, the data are used to derive 95% confidence level upper limits on possible anomalous contributions to the W+W-γγ and W+W-Z0γ vertices: -0.020 GeV -2 <a0/∧2 <0.020 GeV-2, -0.053 GeV-2 <ac/∧2 <0.037 GeV -2, -0.16 GeV-2 <an/∧2 <0.15 GeV-2, where ∧ represents the energy scale for new physics and a0, ac and an are dimensionless coupling constants.

Original languageEnglish
Pages (from-to)17-36
Number of pages20
JournalPhysics Letters B
Volume580
Issue number1-2
DOIs
Publication statusPublished - jan. 29 2004

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photons
bosons
cross sections
energy
confidence
apexes
physics
collisions
radiation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Abbiendi, G., Ainsley, C., Åkesson, P. F., Alexander, G., Allison, J., Amaral, P., ... Zivkovic, L. (2004). A study of W+W-γ events at LEP. Physics Letters B, 580(1-2), 17-36. https://doi.org/10.1016/j.physletb.2003.10.063

A study of W+W-γ events at LEP. / Abbiendi, G.; Ainsley, C.; Åkesson, P. F.; Alexander, G.; Allison, J.; Amaral, P.; Anagnostou, G.; Anderson, K. J.; Arcelli, S.; Asai, S.; Axen, D.; Azuelos, G.; Bailey, I.; Barberio, E.; Barlow, R. J.; Batley, R. J.; Bechtle, P.; Behnke, T.; Bell, K. W.; Bell, P. J.; Bella, G.; Bellerive, A.; Benelli, G.; Bethke, S.; Biebel, O.; Boeriu, O.; Bock, P.; Boutemeur, M.; Braibant, S.; Brigliadori, L.; Brown, R. M.; Buesser, K.; Burckhart, H. J.; Campana, S.; Carnegie, R. K.; Caron, B.; Carter, A. A.; Carter, J. R.; Chang-, C. Y.; Charlton, D. G.; Csilling, A.; Cuffiani, M.; Dado, S.; De Roeck, A.; De Wolf, E. A.; Desch, K.; Dienes, B.; Donkers, M.; Dubbert, J.; Duchovni, E.; Duckeck, G.; Duerdoth, I. P.; Etzion, E.; Fabbri, F.; Felď, L.; Ferrari, P.; Fiedler, F.; Fleck, I.; Ford, M.; Frey, A.; Fürtjes, A.; Gagnon, P.; Gary, J. W.; Gaycken, G.; Geich-Gimbel, C.; Giacomelli, G.; Giacomelli, P.; Giunta, M.; Goldberg, J.; Gross, E.; Grunhaus, J.; Gruwé, M.; Günther, P. O.; Gupta, A.; Hajdú, C.; Hamann, M.; Hanson, G. G.; Harder, K.; Harel, A.; Harin-Dirac, M.; Hauschild, M.; Hawkes, C. M.; Hawkings, R.; Hemingway, R. J.; Hensel, C.; Herten, G.; Heuer, R. D.; Hill, J. C.; Hoffman, K.; Horváth, D.; Igo-Kemenes, P.; Ishii, K.; Jeremie, H.; Jovanovic, P.; Junk, T. R.; Kanaya, N.; Kanzaki, J.; Karapetian, G.; Karlen, D.; Kawagoe, K.; Kawamoto, T.; Keeler, R. K.; Kellogg, R. G.; Kennedy, B. W.; Kim, D. H.; Klein, K.; Klier, A.; Kluth, S.; Kobayashi, T.; Kobel, M.; Komamiya, S.; Kormos, L.; Krämer, T.; Krieger, P.; von Krogh, J.; Kruger, K.; Kuhl, T.; Kupper, M.; Lafferty, G. D.; Landsman, H.; Lanske, D.; Layter, J. G.; Leins, A.; Lellouch, D.; Letts, J.; Levinson, L.; Lillich, J.; Lloyd, S. L.; Loebinger, F. K.; Lu, J.; Ludwig, J.; Macpherson, A.; Mader, W.; Marcellini, S.; Martin, A. J.; Masetti, G.; Mashimo, T.; Mättig, P.; McDonald, W. J.; McKenna, J.; McMahon, T. J.; McPherson, R. A.; Meijers, F.; Menges, W.; Merritt, F. S.; Mes, H.; Michelini, A.; Mihara, S.; Mikenberg, G.; Miller, D. J.; Moed, S.; Mohr, W.; Mori, T.; Mutter, A.; Nagai, K.; Nakamura, I.; Nanjo, H.; Neal, H. A.; Nisius, R.; O'Neale, S. W.; Oh, A.; Okpara, A.; Oreglia, M. J.; Orito, S.; Pahl, C.; Pásztor, G.; Pater, J. R.; Patrick, G. N.; Pilcher, J. E.; Pinfold, J.; Plane, D. E.; Poli, B.; Polok, J.; Pooth, O.; Przybycień, M.; Quadt, A.; Rabbertz, K.; Rembser, C.; Renkel, P.; Roney, J. M.; Rosati, S.; Rozen, Y.; Runge, K.; Sachs, K.; Saeki, T.; Sarkisyan, E. K G; Schaile, A. D.; Schaile, O.; Scharff-Hansen, P.; Schieck, J.; Schörner-Sadenius, T.; Schröder, M.; Schumacher, M.; Schwick, C.; Scott, W. G.; Seuster, R.; Shears, T. G.; Shen, B. C.; Sherwood, P.; Siroli, G.; Skuja, A.; Smith, A. M.; Sobie, R.; Söldner-Rembold, S.; Spano, F.; Stahl, A.; Stephens, K.; Strom, D.; Ströhmer, R.; Tarem, S.; Tasevsky, M.; Taylor, R. J.; Teuscher, R.; Thomson, M. A.; Torrence, E.; Toya, D.; Tran, P.; Trigger, I.; Trócsányi, Z.; Tsur, E.; Turner-Watson, M. F.; Ueda, I.; Újvári, B.; Vollmer, C. F.; Vannerem, P.; Vértesi, R.; Verzocchi, M.; Voss, H.; Vossebeld, J.; Waller, D.; Ward, C. P.; Ward, D. R.; Watkins, P. M.; Watson, A. T.; Watson, N. K.; Wells, P. S.; Wengler, T.; Wermes, N.; Wetterling, D.; Wilson, G. W.; Wilson, J. A.; Wolf, G.; Wyatt, T. R.; Yamashita, S.; Zer-Zion, D.; Zivkovic, L.

In: Physics Letters B, Vol. 580, No. 1-2, 29.01.2004, p. 17-36.

Research output: Article

Abbiendi, G, Ainsley, C, Åkesson, PF, Alexander, G, Allison, J, Amaral, P, Anagnostou, G, Anderson, KJ, Arcelli, S, Asai, S, Axen, D, Azuelos, G, Bailey, I, Barberio, E, Barlow, RJ, Batley, RJ, Bechtle, P, Behnke, T, Bell, KW, Bell, PJ, Bella, G, Bellerive, A, Benelli, G, Bethke, S, Biebel, O, Boeriu, O, Bock, P, Boutemeur, M, Braibant, S, Brigliadori, L, Brown, RM, Buesser, K, Burckhart, HJ, Campana, S, Carnegie, RK, Caron, B, Carter, AA, Carter, JR, Chang-, CY, Charlton, DG, Csilling, A, Cuffiani, M, Dado, S, De Roeck, A, De Wolf, EA, Desch, K, Dienes, B, Donkers, M, Dubbert, J, Duchovni, E, Duckeck, G, Duerdoth, IP, Etzion, E, Fabbri, F, Felď, L, Ferrari, P, Fiedler, F, Fleck, I, Ford, M, Frey, A, Fürtjes, A, Gagnon, P, Gary, JW, Gaycken, G, Geich-Gimbel, C, Giacomelli, G, Giacomelli, P, Giunta, M, Goldberg, J, Gross, E, Grunhaus, J, Gruwé, M, Günther, PO, Gupta, A, Hajdú, C, Hamann, M, Hanson, GG, Harder, K, Harel, A, Harin-Dirac, M, Hauschild, M, Hawkes, CM, Hawkings, R, Hemingway, RJ, Hensel, C, Herten, G, Heuer, RD, Hill, JC, Hoffman, K, Horváth, D, Igo-Kemenes, P, Ishii, K, Jeremie, H, Jovanovic, P, Junk, TR, Kanaya, N, Kanzaki, J, Karapetian, G, Karlen, D, Kawagoe, K, Kawamoto, T, Keeler, RK, Kellogg, RG, Kennedy, BW, Kim, DH, Klein, K, Klier, A, Kluth, S, Kobayashi, T, Kobel, M, Komamiya, S, Kormos, L, Krämer, T, Krieger, P, von Krogh, J, Kruger, K, Kuhl, T, Kupper, M, Lafferty, GD, Landsman, H, Lanske, D, Layter, JG, Leins, A, Lellouch, D, Letts, J, Levinson, L, Lillich, J, Lloyd, SL, Loebinger, FK, Lu, J, Ludwig, J, Macpherson, A, Mader, W, Marcellini, S, Martin, AJ, Masetti, G, Mashimo, T, Mättig, P, McDonald, WJ, McKenna, J, McMahon, TJ, McPherson, RA, Meijers, F, Menges, W, Merritt, FS, Mes, H, Michelini, A, Mihara, S, Mikenberg, G, Miller, DJ, Moed, S, Mohr, W, Mori, T, Mutter, A, Nagai, K, Nakamura, I, Nanjo, H, Neal, HA, Nisius, R, O'Neale, SW, Oh, A, Okpara, A, Oreglia, MJ, Orito, S, Pahl, C, Pásztor, G, Pater, JR, Patrick, GN, Pilcher, JE, Pinfold, J, Plane, DE, Poli, B, Polok, J, Pooth, O, Przybycień, M, Quadt, A, Rabbertz, K, Rembser, C, Renkel, P, Roney, JM, Rosati, S, Rozen, Y, Runge, K, Sachs, K, Saeki, T, Sarkisyan, EKG, Schaile, AD, Schaile, O, Scharff-Hansen, P, Schieck, J, Schörner-Sadenius, T, Schröder, M, Schumacher, M, Schwick, C, Scott, WG, Seuster, R, Shears, TG, Shen, BC, Sherwood, P, Siroli, G, Skuja, A, Smith, AM, Sobie, R, Söldner-Rembold, S, Spano, F, Stahl, A, Stephens, K, Strom, D, Ströhmer, R, Tarem, S, Tasevsky, M, Taylor, RJ, Teuscher, R, Thomson, MA, Torrence, E, Toya, D, Tran, P, Trigger, I, Trócsányi, Z, Tsur, E, Turner-Watson, MF, Ueda, I, Újvári, B, Vollmer, CF, Vannerem, P, Vértesi, R, Verzocchi, M, Voss, H, Vossebeld, J, Waller, D, Ward, CP, Ward, DR, Watkins, PM, Watson, AT, Watson, NK, Wells, PS, Wengler, T, Wermes, N, Wetterling, D, Wilson, GW, Wilson, JA, Wolf, G, Wyatt, TR, Yamashita, S, Zer-Zion, D & Zivkovic, L 2004, 'A study of W+W-γ events at LEP', Physics Letters B, vol. 580, no. 1-2, pp. 17-36. https://doi.org/10.1016/j.physletb.2003.10.063
Abbiendi G, Ainsley C, Åkesson PF, Alexander G, Allison J, Amaral P et al. A study of W+W-γ events at LEP. Physics Letters B. 2004 jan. 29;580(1-2):17-36. https://doi.org/10.1016/j.physletb.2003.10.063
Abbiendi, G. ; Ainsley, C. ; Åkesson, P. F. ; Alexander, G. ; Allison, J. ; Amaral, P. ; Anagnostou, G. ; Anderson, K. J. ; Arcelli, S. ; Asai, S. ; Axen, D. ; Azuelos, G. ; Bailey, I. ; Barberio, E. ; Barlow, R. J. ; Batley, R. J. ; Bechtle, P. ; Behnke, T. ; Bell, K. W. ; Bell, P. J. ; Bella, G. ; Bellerive, A. ; Benelli, G. ; Bethke, S. ; Biebel, O. ; Boeriu, O. ; Bock, P. ; Boutemeur, M. ; Braibant, S. ; Brigliadori, L. ; Brown, R. M. ; Buesser, K. ; Burckhart, H. J. ; Campana, S. ; Carnegie, R. K. ; Caron, B. ; Carter, A. A. ; Carter, J. R. ; Chang-, C. Y. ; Charlton, D. G. ; Csilling, A. ; Cuffiani, M. ; Dado, S. ; De Roeck, A. ; De Wolf, E. A. ; Desch, K. ; Dienes, B. ; Donkers, M. ; Dubbert, J. ; Duchovni, E. ; Duckeck, G. ; Duerdoth, I. P. ; Etzion, E. ; Fabbri, F. ; Felď, L. ; Ferrari, P. ; Fiedler, F. ; Fleck, I. ; Ford, M. ; Frey, A. ; Fürtjes, A. ; Gagnon, P. ; Gary, J. W. ; Gaycken, G. ; Geich-Gimbel, C. ; Giacomelli, G. ; Giacomelli, P. ; Giunta, M. ; Goldberg, J. ; Gross, E. ; Grunhaus, J. ; Gruwé, M. ; Günther, P. O. ; Gupta, A. ; Hajdú, C. ; Hamann, M. ; Hanson, G. G. ; Harder, K. ; Harel, A. ; Harin-Dirac, M. ; Hauschild, M. ; Hawkes, C. M. ; Hawkings, R. ; Hemingway, R. J. ; Hensel, C. ; Herten, G. ; Heuer, R. D. ; Hill, J. C. ; Hoffman, K. ; Horváth, D. ; Igo-Kemenes, P. ; Ishii, K. ; Jeremie, H. ; Jovanovic, P. ; Junk, T. R. ; Kanaya, N. ; Kanzaki, J. ; Karapetian, G. ; Karlen, D. ; Kawagoe, K. ; Kawamoto, T. ; Keeler, R. K. ; Kellogg, R. G. ; Kennedy, B. W. ; Kim, D. H. ; Klein, K. ; Klier, A. ; Kluth, S. ; Kobayashi, T. ; Kobel, M. ; Komamiya, S. ; Kormos, L. ; Krämer, T. ; Krieger, P. ; von Krogh, J. ; Kruger, K. ; Kuhl, T. ; Kupper, M. ; Lafferty, G. D. ; Landsman, H. ; Lanske, D. ; Layter, J. G. ; Leins, A. ; Lellouch, D. ; Letts, J. ; Levinson, L. ; Lillich, J. ; Lloyd, S. L. ; Loebinger, F. K. ; Lu, J. ; Ludwig, J. ; Macpherson, A. ; Mader, W. ; Marcellini, S. ; Martin, A. J. ; Masetti, G. ; Mashimo, T. ; Mättig, P. ; McDonald, W. J. ; McKenna, J. ; McMahon, T. J. ; McPherson, R. A. ; Meijers, F. ; Menges, W. ; Merritt, F. S. ; Mes, H. ; Michelini, A. ; Mihara, S. ; Mikenberg, G. ; Miller, D. J. ; Moed, S. ; Mohr, W. ; Mori, T. ; Mutter, A. ; Nagai, K. ; Nakamura, I. ; Nanjo, H. ; Neal, H. A. ; Nisius, R. ; O'Neale, S. W. ; Oh, A. ; Okpara, A. ; Oreglia, M. J. ; Orito, S. ; Pahl, C. ; Pásztor, G. ; Pater, J. R. ; Patrick, G. N. ; Pilcher, J. E. ; Pinfold, J. ; Plane, D. E. ; Poli, B. ; Polok, J. ; Pooth, O. ; Przybycień, M. ; Quadt, A. ; Rabbertz, K. ; Rembser, C. ; Renkel, P. ; Roney, J. M. ; Rosati, S. ; Rozen, Y. ; Runge, K. ; Sachs, K. ; Saeki, T. ; Sarkisyan, E. K G ; Schaile, A. D. ; Schaile, O. ; Scharff-Hansen, P. ; Schieck, J. ; Schörner-Sadenius, T. ; Schröder, M. ; Schumacher, M. ; Schwick, C. ; Scott, W. G. ; Seuster, R. ; Shears, T. G. ; Shen, B. C. ; Sherwood, P. ; Siroli, G. ; Skuja, A. ; Smith, A. M. ; Sobie, R. ; Söldner-Rembold, S. ; Spano, F. ; Stahl, A. ; Stephens, K. ; Strom, D. ; Ströhmer, R. ; Tarem, S. ; Tasevsky, M. ; Taylor, R. J. ; Teuscher, R. ; Thomson, M. A. ; Torrence, E. ; Toya, D. ; Tran, P. ; Trigger, I. ; Trócsányi, Z. ; Tsur, E. ; Turner-Watson, M. F. ; Ueda, I. ; Újvári, B. ; Vollmer, C. F. ; Vannerem, P. ; Vértesi, R. ; Verzocchi, M. ; Voss, H. ; Vossebeld, J. ; Waller, D. ; Ward, C. P. ; Ward, D. R. ; Watkins, P. M. ; Watson, A. T. ; Watson, N. K. ; Wells, P. S. ; Wengler, T. ; Wermes, N. ; Wetterling, D. ; Wilson, G. W. ; Wilson, J. A. ; Wolf, G. ; Wyatt, T. R. ; Yamashita, S. ; Zer-Zion, D. ; Zivkovic, L. / A study of W+W-γ events at LEP. In: Physics Letters B. 2004 ; Vol. 580, No. 1-2. pp. 17-36.
@article{04044ad9f756484bb435b24b11ff9030,
title = "A study of W+W-γ events at LEP",
abstract = "A study of W+W- events accompanied by hard photon radiation, Eγ > 2.5 GeV, produced in e+e- collisions at LEP is presented. Events consistent with being two on-shell W-bosons and an isolated photon are selected from 681 pb-1 of data recorded at 180 GeV <√s <209 GeV. From the sample of 187 selected W+W-γ candidates with photon energies greater than 2.5 GeV, the W+W-γ cross-section is determined at five values of √s. The results are consistent with the Standard Model expectation. Averaging over all energies, the ratio of the observed cross-section to the Standard Model expectation is R(data/SM) = 0.99 ± 0.09 ± 0.04, where the errors represent the statistical and systematic uncertainties respectively. These data provide constraints on the related O(α) systematic uncertainties on the measurement of the W-boson mass at LEP. Finally, the data are used to derive 95{\%} confidence level upper limits on possible anomalous contributions to the W+W-γγ and W+W-Z0γ vertices: -0.020 GeV -2 0/∧2 <0.020 GeV-2, -0.053 GeV-2 c/∧2 <0.037 GeV -2, -0.16 GeV-2 n/∧2 <0.15 GeV-2, where ∧ represents the energy scale for new physics and a0, ac and an are dimensionless coupling constants.",
author = "G. Abbiendi and C. Ainsley and {\AA}kesson, {P. F.} and G. Alexander and J. Allison and P. Amaral and G. Anagnostou and Anderson, {K. J.} and S. Arcelli and S. Asai and D. Axen and G. Azuelos and I. Bailey and E. Barberio and Barlow, {R. J.} and Batley, {R. J.} and P. Bechtle and T. Behnke and Bell, {K. W.} and Bell, {P. J.} and G. Bella and A. Bellerive and G. Benelli and S. Bethke and O. Biebel and O. Boeriu and P. Bock and M. Boutemeur and S. Braibant and L. Brigliadori and Brown, {R. M.} and K. Buesser and Burckhart, {H. J.} and S. Campana and Carnegie, {R. K.} and B. Caron and Carter, {A. A.} and Carter, {J. R.} and Chang-, {C. Y.} and Charlton, {D. G.} and A. Csilling and M. Cuffiani and S. Dado and {De Roeck}, A. and {De Wolf}, {E. A.} and K. Desch and B. Dienes and M. Donkers and J. Dubbert and E. Duchovni and G. Duckeck and Duerdoth, {I. P.} and E. Etzion and F. Fabbri and L. Felď and P. Ferrari and F. Fiedler and I. Fleck and M. Ford and A. Frey and A. F{\"u}rtjes and P. Gagnon and Gary, {J. W.} and G. Gaycken and C. Geich-Gimbel and G. Giacomelli and P. Giacomelli and M. Giunta and J. Goldberg and E. Gross and J. Grunhaus and M. Gruw{\'e} and G{\"u}nther, {P. O.} and A. Gupta and C. Hajd{\'u} and M. Hamann and Hanson, {G. G.} and K. Harder and A. Harel and M. Harin-Dirac and M. Hauschild and Hawkes, {C. M.} and R. Hawkings and Hemingway, {R. J.} and C. Hensel and G. Herten and Heuer, {R. D.} and Hill, {J. C.} and K. Hoffman and D. Horv{\'a}th and P. Igo-Kemenes and K. Ishii and H. Jeremie and P. Jovanovic and Junk, {T. R.} and N. Kanaya and J. Kanzaki and G. Karapetian and D. Karlen and K. Kawagoe and T. Kawamoto and Keeler, {R. K.} and Kellogg, {R. G.} and Kennedy, {B. W.} and Kim, {D. H.} and K. Klein and A. Klier and S. Kluth and T. Kobayashi and M. Kobel and S. Komamiya and L. Kormos and T. Kr{\"a}mer and P. Krieger and {von Krogh}, J. and K. Kruger and T. Kuhl and M. Kupper and Lafferty, {G. D.} and H. Landsman and D. Lanske and Layter, {J. G.} and A. Leins and D. Lellouch and J. Letts and L. Levinson and J. Lillich and Lloyd, {S. L.} and Loebinger, {F. K.} and J. Lu and J. Ludwig and A. Macpherson and W. Mader and S. Marcellini and Martin, {A. J.} and G. Masetti and T. Mashimo and P. M{\"a}ttig and McDonald, {W. J.} and J. McKenna and McMahon, {T. J.} and McPherson, {R. A.} and F. Meijers and W. Menges and Merritt, {F. S.} and H. Mes and A. Michelini and S. Mihara and G. Mikenberg and Miller, {D. J.} and S. Moed and W. Mohr and T. Mori and A. Mutter and K. Nagai and I. Nakamura and H. Nanjo and Neal, {H. A.} and R. Nisius and O'Neale, {S. W.} and A. Oh and A. Okpara and Oreglia, {M. J.} and S. Orito and C. Pahl and G. P{\'a}sztor and Pater, {J. R.} and Patrick, {G. N.} and Pilcher, {J. E.} and J. Pinfold and Plane, {D. E.} and B. Poli and J. Polok and O. Pooth and M. Przybycień and A. Quadt and K. Rabbertz and C. Rembser and P. Renkel and Roney, {J. M.} and S. Rosati and Y. Rozen and K. Runge and K. Sachs and T. Saeki and Sarkisyan, {E. K G} and Schaile, {A. D.} and O. Schaile and P. Scharff-Hansen and J. Schieck and T. Sch{\"o}rner-Sadenius and M. Schr{\"o}der and M. Schumacher and C. Schwick and Scott, {W. G.} and R. Seuster and Shears, {T. G.} and Shen, {B. C.} and P. Sherwood and G. Siroli and A. Skuja and Smith, {A. M.} and R. Sobie and S. S{\"o}ldner-Rembold and F. Spano and A. Stahl and K. Stephens and D. Strom and R. Str{\"o}hmer and S. Tarem and M. Tasevsky and Taylor, {R. J.} and R. Teuscher and Thomson, {M. A.} and E. Torrence and D. Toya and P. Tran and I. Trigger and Z. Tr{\'o}cs{\'a}nyi and E. Tsur and Turner-Watson, {M. F.} and I. Ueda and B. {\'U}jv{\'a}ri and Vollmer, {C. F.} and P. Vannerem and R. V{\'e}rtesi and M. Verzocchi and H. Voss and J. Vossebeld and D. Waller and Ward, {C. P.} and Ward, {D. R.} and Watkins, {P. M.} and Watson, {A. T.} and Watson, {N. K.} and Wells, {P. S.} and T. Wengler and N. Wermes and D. Wetterling and Wilson, {G. W.} and Wilson, {J. A.} and G. Wolf and Wyatt, {T. R.} and S. Yamashita and D. Zer-Zion and L. Zivkovic",
year = "2004",
month = "1",
day = "29",
doi = "10.1016/j.physletb.2003.10.063",
language = "English",
volume = "580",
pages = "17--36",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier",
number = "1-2",

}

TY - JOUR

T1 - A study of W+W-γ events at LEP

AU - Abbiendi, G.

AU - Ainsley, C.

AU - Åkesson, P. F.

AU - Alexander, G.

AU - Allison, J.

AU - Amaral, P.

AU - Anagnostou, G.

AU - Anderson, K. J.

AU - Arcelli, S.

AU - Asai, S.

AU - Axen, D.

AU - Azuelos, G.

AU - Bailey, I.

AU - Barberio, E.

AU - Barlow, R. J.

AU - Batley, R. J.

AU - Bechtle, P.

AU - Behnke, T.

AU - Bell, K. W.

AU - Bell, P. J.

AU - Bella, G.

AU - Bellerive, A.

AU - Benelli, G.

AU - Bethke, S.

AU - Biebel, O.

AU - Boeriu, O.

AU - Bock, P.

AU - Boutemeur, M.

AU - Braibant, S.

AU - Brigliadori, L.

AU - Brown, R. M.

AU - Buesser, K.

AU - Burckhart, H. J.

AU - Campana, S.

AU - Carnegie, R. K.

AU - Caron, B.

AU - Carter, A. A.

AU - Carter, J. R.

AU - Chang-, C. Y.

AU - Charlton, D. G.

AU - Csilling, A.

AU - Cuffiani, M.

AU - Dado, S.

AU - De Roeck, A.

AU - De Wolf, E. A.

AU - Desch, K.

AU - Dienes, B.

AU - Donkers, M.

AU - Dubbert, J.

AU - Duchovni, E.

AU - Duckeck, G.

AU - Duerdoth, I. P.

AU - Etzion, E.

AU - Fabbri, F.

AU - Felď, L.

AU - Ferrari, P.

AU - Fiedler, F.

AU - Fleck, I.

AU - Ford, M.

AU - Frey, A.

AU - Fürtjes, A.

AU - Gagnon, P.

AU - Gary, J. W.

AU - Gaycken, G.

AU - Geich-Gimbel, C.

AU - Giacomelli, G.

AU - Giacomelli, P.

AU - Giunta, M.

AU - Goldberg, J.

AU - Gross, E.

AU - Grunhaus, J.

AU - Gruwé, M.

AU - Günther, P. O.

AU - Gupta, A.

AU - Hajdú, C.

AU - Hamann, M.

AU - Hanson, G. G.

AU - Harder, K.

AU - Harel, A.

AU - Harin-Dirac, M.

AU - Hauschild, M.

AU - Hawkes, C. M.

AU - Hawkings, R.

AU - Hemingway, R. J.

AU - Hensel, C.

AU - Herten, G.

AU - Heuer, R. D.

AU - Hill, J. C.

AU - Hoffman, K.

AU - Horváth, D.

AU - Igo-Kemenes, P.

AU - Ishii, K.

AU - Jeremie, H.

AU - Jovanovic, P.

AU - Junk, T. R.

AU - Kanaya, N.

AU - Kanzaki, J.

AU - Karapetian, G.

AU - Karlen, D.

AU - Kawagoe, K.

AU - Kawamoto, T.

AU - Keeler, R. K.

AU - Kellogg, R. G.

AU - Kennedy, B. W.

AU - Kim, D. H.

AU - Klein, K.

AU - Klier, A.

AU - Kluth, S.

AU - Kobayashi, T.

AU - Kobel, M.

AU - Komamiya, S.

AU - Kormos, L.

AU - Krämer, T.

AU - Krieger, P.

AU - von Krogh, J.

AU - Kruger, K.

AU - Kuhl, T.

AU - Kupper, M.

AU - Lafferty, G. D.

AU - Landsman, H.

AU - Lanske, D.

AU - Layter, J. G.

AU - Leins, A.

AU - Lellouch, D.

AU - Letts, J.

AU - Levinson, L.

AU - Lillich, J.

AU - Lloyd, S. L.

AU - Loebinger, F. K.

AU - Lu, J.

AU - Ludwig, J.

AU - Macpherson, A.

AU - Mader, W.

AU - Marcellini, S.

AU - Martin, A. J.

AU - Masetti, G.

AU - Mashimo, T.

AU - Mättig, P.

AU - McDonald, W. J.

AU - McKenna, J.

AU - McMahon, T. J.

AU - McPherson, R. A.

AU - Meijers, F.

AU - Menges, W.

AU - Merritt, F. S.

AU - Mes, H.

AU - Michelini, A.

AU - Mihara, S.

AU - Mikenberg, G.

AU - Miller, D. J.

AU - Moed, S.

AU - Mohr, W.

AU - Mori, T.

AU - Mutter, A.

AU - Nagai, K.

AU - Nakamura, I.

AU - Nanjo, H.

AU - Neal, H. A.

AU - Nisius, R.

AU - O'Neale, S. W.

AU - Oh, A.

AU - Okpara, A.

AU - Oreglia, M. J.

AU - Orito, S.

AU - Pahl, C.

AU - Pásztor, G.

AU - Pater, J. R.

AU - Patrick, G. N.

AU - Pilcher, J. E.

AU - Pinfold, J.

AU - Plane, D. E.

AU - Poli, B.

AU - Polok, J.

AU - Pooth, O.

AU - Przybycień, M.

AU - Quadt, A.

AU - Rabbertz, K.

AU - Rembser, C.

AU - Renkel, P.

AU - Roney, J. M.

AU - Rosati, S.

AU - Rozen, Y.

AU - Runge, K.

AU - Sachs, K.

AU - Saeki, T.

AU - Sarkisyan, E. K G

AU - Schaile, A. D.

AU - Schaile, O.

AU - Scharff-Hansen, P.

AU - Schieck, J.

AU - Schörner-Sadenius, T.

AU - Schröder, M.

AU - Schumacher, M.

AU - Schwick, C.

AU - Scott, W. G.

AU - Seuster, R.

AU - Shears, T. G.

AU - Shen, B. C.

AU - Sherwood, P.

AU - Siroli, G.

AU - Skuja, A.

AU - Smith, A. M.

AU - Sobie, R.

AU - Söldner-Rembold, S.

AU - Spano, F.

AU - Stahl, A.

AU - Stephens, K.

AU - Strom, D.

AU - Ströhmer, R.

AU - Tarem, S.

AU - Tasevsky, M.

AU - Taylor, R. J.

AU - Teuscher, R.

AU - Thomson, M. A.

AU - Torrence, E.

AU - Toya, D.

AU - Tran, P.

AU - Trigger, I.

AU - Trócsányi, Z.

AU - Tsur, E.

AU - Turner-Watson, M. F.

AU - Ueda, I.

AU - Újvári, B.

AU - Vollmer, C. F.

AU - Vannerem, P.

AU - Vértesi, R.

AU - Verzocchi, M.

AU - Voss, H.

AU - Vossebeld, J.

AU - Waller, D.

AU - Ward, C. P.

AU - Ward, D. R.

AU - Watkins, P. M.

AU - Watson, A. T.

AU - Watson, N. K.

AU - Wells, P. S.

AU - Wengler, T.

AU - Wermes, N.

AU - Wetterling, D.

AU - Wilson, G. W.

AU - Wilson, J. A.

AU - Wolf, G.

AU - Wyatt, T. R.

AU - Yamashita, S.

AU - Zer-Zion, D.

AU - Zivkovic, L.

PY - 2004/1/29

Y1 - 2004/1/29

N2 - A study of W+W- events accompanied by hard photon radiation, Eγ > 2.5 GeV, produced in e+e- collisions at LEP is presented. Events consistent with being two on-shell W-bosons and an isolated photon are selected from 681 pb-1 of data recorded at 180 GeV <√s <209 GeV. From the sample of 187 selected W+W-γ candidates with photon energies greater than 2.5 GeV, the W+W-γ cross-section is determined at five values of √s. The results are consistent with the Standard Model expectation. Averaging over all energies, the ratio of the observed cross-section to the Standard Model expectation is R(data/SM) = 0.99 ± 0.09 ± 0.04, where the errors represent the statistical and systematic uncertainties respectively. These data provide constraints on the related O(α) systematic uncertainties on the measurement of the W-boson mass at LEP. Finally, the data are used to derive 95% confidence level upper limits on possible anomalous contributions to the W+W-γγ and W+W-Z0γ vertices: -0.020 GeV -2 0/∧2 <0.020 GeV-2, -0.053 GeV-2 c/∧2 <0.037 GeV -2, -0.16 GeV-2 n/∧2 <0.15 GeV-2, where ∧ represents the energy scale for new physics and a0, ac and an are dimensionless coupling constants.

AB - A study of W+W- events accompanied by hard photon radiation, Eγ > 2.5 GeV, produced in e+e- collisions at LEP is presented. Events consistent with being two on-shell W-bosons and an isolated photon are selected from 681 pb-1 of data recorded at 180 GeV <√s <209 GeV. From the sample of 187 selected W+W-γ candidates with photon energies greater than 2.5 GeV, the W+W-γ cross-section is determined at five values of √s. The results are consistent with the Standard Model expectation. Averaging over all energies, the ratio of the observed cross-section to the Standard Model expectation is R(data/SM) = 0.99 ± 0.09 ± 0.04, where the errors represent the statistical and systematic uncertainties respectively. These data provide constraints on the related O(α) systematic uncertainties on the measurement of the W-boson mass at LEP. Finally, the data are used to derive 95% confidence level upper limits on possible anomalous contributions to the W+W-γγ and W+W-Z0γ vertices: -0.020 GeV -2 0/∧2 <0.020 GeV-2, -0.053 GeV-2 c/∧2 <0.037 GeV -2, -0.16 GeV-2 n/∧2 <0.15 GeV-2, where ∧ represents the energy scale for new physics and a0, ac and an are dimensionless coupling constants.

UR - http://www.scopus.com/inward/record.url?scp=0346655360&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0346655360&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2003.10.063

DO - 10.1016/j.physletb.2003.10.063

M3 - Article

AN - SCOPUS:0346655360

VL - 580

SP - 17

EP - 36

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

IS - 1-2

ER -