Search for a new light gauge boson in π0, η and η′ decays

C. Amsler, D. S. Armstrong, C. A. Baker, B. M. Barnett, C. J. Batty, M. Benayoun, K. Beuchert, P. Birien, P. Blüm, R. Bossingham, K. Braune, J. Brose, D. V. Bugg, T. Case, A. R. Cooper, O. Cramer, K. M. Crowe, T. Degener, H. P. Dietz, N. Djaoshvili & 63 others S. V. Dombrowski, M. Doser, W. Dünnweber, D. Engelhardt, M. Englert, M. A. Faessler, C. Felix, P. Giarritta, R. Hackmann, R. P. Haddock, F. H. Heinsius, M. Herz, N. P. Hessey, P. Hidas, C. Holtzhaußen, P. Illinger, D. Jamnik, H. Kalinowsky, B. Kalteyer, B. Kämmle, T. Kiel, J. Kisiel, E. Klempt, H. Koch, M. Kobel, C. Kolo, M. Kunze, M. Lakata, R. Landua, J. Lüdemann, H. Matthäy, R. McCrady, J. P. Merlo, C. A. Meyer, L. Montanet, A. Noble, R. Ouared, F. Ould-Saada, K. Peters, C. N. Pinder, G. Pinter, S. Ravndal, C. Regenfus, E. Schäfer, P. Schmidt, M. Schütrumpf, R. Seibert, S. Spanier, H. Stöck, C. Straßburger, U. Strohbusch, M. Suffert, U. Thoma, M. Tischhäuser, D. Urner, C. Völcker, F. Walter, D. Walther, U. Wiedner, N. Winter, J. Zoll, B. S. Zou, Č Zupančič

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Upper limits for the production of new light gauge bosons in π0, η and η′ decays have been obtained with the Crystal Barrel detector. The kinematically well-constrained reactions p̄p → π0π0 p have been studied, where P ≡ π0, η, η′ decays through the emission of a single photon recoiling against a missing state X. X can be a long-lived weakly interacting particle or it decays into νν̄. The resulting branching ratio upper limits (90 % C.L.) are: 6 × 10-5 for masses MX of the missing particle X lying between 65 MeV/c2 and 125 MeV/c20 decay), 6 × 10-5 for MX between 200 MeV/c2 and 525 MeV/c2 (η decay), and 4 × 10-5 for MX between 50 MeV/c2 and 925 MeV/c2 (η′ decay). The π0-decay limit represents an improvement by a factor of 4 to 8 (depending on MX) when compared to the existing limit, whereas the η and η′ decay limits have been measured for the first time, thereby extending the MX range from 125 MeV/c2 up to 925 MeV/c2.

Original languageEnglish
Pages (from-to)219-226
Number of pages8
JournalZeitschrift für Physik C Particles and Fields
Volume70
Issue number2
Publication statusPublished - Apr 1996

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bosons
decay
particle decay
recoilings
detectors
photons
crystals

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Amsler, C., Armstrong, D. S., Baker, C. A., Barnett, B. M., Batty, C. J., Benayoun, M., ... Zupančič, Č. (1996). Search for a new light gauge boson in π0, η and η′ decays. Zeitschrift für Physik C Particles and Fields, 70(2), 219-226.

Search for a new light gauge boson in π0, η and η′ decays. / Amsler, C.; Armstrong, D. S.; Baker, C. A.; Barnett, B. M.; Batty, C. J.; Benayoun, M.; Beuchert, K.; Birien, P.; Blüm, P.; Bossingham, R.; Braune, K.; Brose, J.; Bugg, D. V.; Case, T.; Cooper, A. R.; Cramer, O.; Crowe, K. M.; Degener, T.; Dietz, H. P.; Djaoshvili, N.; Dombrowski, S. V.; Doser, M.; Dünnweber, W.; Engelhardt, D.; Englert, M.; Faessler, M. A.; Felix, C.; Giarritta, P.; Hackmann, R.; Haddock, R. P.; Heinsius, F. H.; Herz, M.; Hessey, N. P.; Hidas, P.; Holtzhaußen, C.; Illinger, P.; Jamnik, D.; Kalinowsky, H.; Kalteyer, B.; Kämmle, B.; Kiel, T.; Kisiel, J.; Klempt, E.; Koch, H.; Kobel, M.; Kolo, C.; Kunze, M.; Lakata, M.; Landua, R.; Lüdemann, J.; Matthäy, H.; McCrady, R.; Merlo, J. P.; Meyer, C. A.; Montanet, L.; Noble, A.; Ouared, R.; Ould-Saada, F.; Peters, K.; Pinder, C. N.; Pinter, G.; Ravndal, S.; Regenfus, C.; Schäfer, E.; Schmidt, P.; Schütrumpf, M.; Seibert, R.; Spanier, S.; Stöck, H.; Straßburger, C.; Strohbusch, U.; Suffert, M.; Thoma, U.; Tischhäuser, M.; Urner, D.; Völcker, C.; Walter, F.; Walther, D.; Wiedner, U.; Winter, N.; Zoll, J.; Zou, B. S.; Zupančič, Č.

In: Zeitschrift für Physik C Particles and Fields, Vol. 70, No. 2, 04.1996, p. 219-226.

Research output: Contribution to journalArticle

Amsler, C, Armstrong, DS, Baker, CA, Barnett, BM, Batty, CJ, Benayoun, M, Beuchert, K, Birien, P, Blüm, P, Bossingham, R, Braune, K, Brose, J, Bugg, DV, Case, T, Cooper, AR, Cramer, O, Crowe, KM, Degener, T, Dietz, HP, Djaoshvili, N, Dombrowski, SV, Doser, M, Dünnweber, W, Engelhardt, D, Englert, M, Faessler, MA, Felix, C, Giarritta, P, Hackmann, R, Haddock, RP, Heinsius, FH, Herz, M, Hessey, NP, Hidas, P, Holtzhaußen, C, Illinger, P, Jamnik, D, Kalinowsky, H, Kalteyer, B, Kämmle, B, Kiel, T, Kisiel, J, Klempt, E, Koch, H, Kobel, M, Kolo, C, Kunze, M, Lakata, M, Landua, R, Lüdemann, J, Matthäy, H, McCrady, R, Merlo, JP, Meyer, CA, Montanet, L, Noble, A, Ouared, R, Ould-Saada, F, Peters, K, Pinder, CN, Pinter, G, Ravndal, S, Regenfus, C, Schäfer, E, Schmidt, P, Schütrumpf, M, Seibert, R, Spanier, S, Stöck, H, Straßburger, C, Strohbusch, U, Suffert, M, Thoma, U, Tischhäuser, M, Urner, D, Völcker, C, Walter, F, Walther, D, Wiedner, U, Winter, N, Zoll, J, Zou, BS & Zupančič, Č 1996, 'Search for a new light gauge boson in π0, η and η′ decays', Zeitschrift für Physik C Particles and Fields, vol. 70, no. 2, pp. 219-226.
Amsler C, Armstrong DS, Baker CA, Barnett BM, Batty CJ, Benayoun M et al. Search for a new light gauge boson in π0, η and η′ decays. Zeitschrift für Physik C Particles and Fields. 1996 Apr;70(2):219-226.
Amsler, C. ; Armstrong, D. S. ; Baker, C. A. ; Barnett, B. M. ; Batty, C. J. ; Benayoun, M. ; Beuchert, K. ; Birien, P. ; Blüm, P. ; Bossingham, R. ; Braune, K. ; Brose, J. ; Bugg, D. V. ; Case, T. ; Cooper, A. R. ; Cramer, O. ; Crowe, K. M. ; Degener, T. ; Dietz, H. P. ; Djaoshvili, N. ; Dombrowski, S. V. ; Doser, M. ; Dünnweber, W. ; Engelhardt, D. ; Englert, M. ; Faessler, M. A. ; Felix, C. ; Giarritta, P. ; Hackmann, R. ; Haddock, R. P. ; Heinsius, F. H. ; Herz, M. ; Hessey, N. P. ; Hidas, P. ; Holtzhaußen, C. ; Illinger, P. ; Jamnik, D. ; Kalinowsky, H. ; Kalteyer, B. ; Kämmle, B. ; Kiel, T. ; Kisiel, J. ; Klempt, E. ; Koch, H. ; Kobel, M. ; Kolo, C. ; Kunze, M. ; Lakata, M. ; Landua, R. ; Lüdemann, J. ; Matthäy, H. ; McCrady, R. ; Merlo, J. P. ; Meyer, C. A. ; Montanet, L. ; Noble, A. ; Ouared, R. ; Ould-Saada, F. ; Peters, K. ; Pinder, C. N. ; Pinter, G. ; Ravndal, S. ; Regenfus, C. ; Schäfer, E. ; Schmidt, P. ; Schütrumpf, M. ; Seibert, R. ; Spanier, S. ; Stöck, H. ; Straßburger, C. ; Strohbusch, U. ; Suffert, M. ; Thoma, U. ; Tischhäuser, M. ; Urner, D. ; Völcker, C. ; Walter, F. ; Walther, D. ; Wiedner, U. ; Winter, N. ; Zoll, J. ; Zou, B. S. ; Zupančič, Č. / Search for a new light gauge boson in π0, η and η′ decays. In: Zeitschrift für Physik C Particles and Fields. 1996 ; Vol. 70, No. 2. pp. 219-226.
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title = "Search for a new light gauge boson in π0, η and η′ decays",
abstract = "Upper limits for the production of new light gauge bosons in π0, η and η′ decays have been obtained with the Crystal Barrel detector. The kinematically well-constrained reactions p̄p → π0π0 p have been studied, where P ≡ π0, η, η′ decays through the emission of a single photon recoiling against a missing state X. X can be a long-lived weakly interacting particle or it decays into νν̄. The resulting branching ratio upper limits (90 {\%} C.L.) are: 6 × 10-5 for masses MX of the missing particle X lying between 65 MeV/c2 and 125 MeV/c2 (π0 decay), 6 × 10-5 for MX between 200 MeV/c2 and 525 MeV/c2 (η decay), and 4 × 10-5 for MX between 50 MeV/c2 and 925 MeV/c2 (η′ decay). The π0-decay limit represents an improvement by a factor of 4 to 8 (depending on MX) when compared to the existing limit, whereas the η and η′ decay limits have been measured for the first time, thereby extending the MX range from 125 MeV/c2 up to 925 MeV/c2.",
author = "C. Amsler and Armstrong, {D. S.} and Baker, {C. A.} and Barnett, {B. M.} and Batty, {C. J.} and M. Benayoun and K. Beuchert and P. Birien and P. Bl{\"u}m and R. Bossingham and K. Braune and J. Brose and Bugg, {D. V.} and T. Case and Cooper, {A. R.} and O. Cramer and Crowe, {K. M.} and T. Degener and Dietz, {H. P.} and N. Djaoshvili and Dombrowski, {S. V.} and M. Doser and W. D{\"u}nnweber and D. Engelhardt and M. Englert and Faessler, {M. A.} and C. Felix and P. Giarritta and R. Hackmann and Haddock, {R. P.} and Heinsius, {F. H.} and M. Herz and Hessey, {N. P.} and P. Hidas and C. Holtzhau{\ss}en and P. Illinger and D. Jamnik and H. Kalinowsky and B. Kalteyer and B. K{\"a}mmle and T. Kiel and J. Kisiel and E. Klempt and H. Koch and M. Kobel and C. Kolo and M. Kunze and M. Lakata and R. Landua and J. L{\"u}demann and H. Matth{\"a}y and R. McCrady and Merlo, {J. P.} and Meyer, {C. A.} and L. Montanet and A. Noble and R. Ouared and F. Ould-Saada and K. Peters and Pinder, {C. N.} and G. Pinter and S. Ravndal and C. Regenfus and E. Sch{\"a}fer and P. Schmidt and M. Sch{\"u}trumpf and R. Seibert and S. Spanier and H. St{\"o}ck and C. Stra{\ss}burger and U. Strohbusch and M. Suffert and U. Thoma and M. Tischh{\"a}user and D. Urner and C. V{\"o}lcker and F. Walter and D. Walther and U. Wiedner and N. Winter and J. Zoll and Zou, {B. S.} and Č Zupančič",
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TY - JOUR

T1 - Search for a new light gauge boson in π0, η and η′ decays

AU - Amsler, C.

AU - Armstrong, D. S.

AU - Baker, C. A.

AU - Barnett, B. M.

AU - Batty, C. J.

AU - Benayoun, M.

AU - Beuchert, K.

AU - Birien, P.

AU - Blüm, P.

AU - Bossingham, R.

AU - Braune, K.

AU - Brose, J.

AU - Bugg, D. V.

AU - Case, T.

AU - Cooper, A. R.

AU - Cramer, O.

AU - Crowe, K. M.

AU - Degener, T.

AU - Dietz, H. P.

AU - Djaoshvili, N.

AU - Dombrowski, S. V.

AU - Doser, M.

AU - Dünnweber, W.

AU - Engelhardt, D.

AU - Englert, M.

AU - Faessler, M. A.

AU - Felix, C.

AU - Giarritta, P.

AU - Hackmann, R.

AU - Haddock, R. P.

AU - Heinsius, F. H.

AU - Herz, M.

AU - Hessey, N. P.

AU - Hidas, P.

AU - Holtzhaußen, C.

AU - Illinger, P.

AU - Jamnik, D.

AU - Kalinowsky, H.

AU - Kalteyer, B.

AU - Kämmle, B.

AU - Kiel, T.

AU - Kisiel, J.

AU - Klempt, E.

AU - Koch, H.

AU - Kobel, M.

AU - Kolo, C.

AU - Kunze, M.

AU - Lakata, M.

AU - Landua, R.

AU - Lüdemann, J.

AU - Matthäy, H.

AU - McCrady, R.

AU - Merlo, J. P.

AU - Meyer, C. A.

AU - Montanet, L.

AU - Noble, A.

AU - Ouared, R.

AU - Ould-Saada, F.

AU - Peters, K.

AU - Pinder, C. N.

AU - Pinter, G.

AU - Ravndal, S.

AU - Regenfus, C.

AU - Schäfer, E.

AU - Schmidt, P.

AU - Schütrumpf, M.

AU - Seibert, R.

AU - Spanier, S.

AU - Stöck, H.

AU - Straßburger, C.

AU - Strohbusch, U.

AU - Suffert, M.

AU - Thoma, U.

AU - Tischhäuser, M.

AU - Urner, D.

AU - Völcker, C.

AU - Walter, F.

AU - Walther, D.

AU - Wiedner, U.

AU - Winter, N.

AU - Zoll, J.

AU - Zou, B. S.

AU - Zupančič, Č

PY - 1996/4

Y1 - 1996/4

N2 - Upper limits for the production of new light gauge bosons in π0, η and η′ decays have been obtained with the Crystal Barrel detector. The kinematically well-constrained reactions p̄p → π0π0 p have been studied, where P ≡ π0, η, η′ decays through the emission of a single photon recoiling against a missing state X. X can be a long-lived weakly interacting particle or it decays into νν̄. The resulting branching ratio upper limits (90 % C.L.) are: 6 × 10-5 for masses MX of the missing particle X lying between 65 MeV/c2 and 125 MeV/c2 (π0 decay), 6 × 10-5 for MX between 200 MeV/c2 and 525 MeV/c2 (η decay), and 4 × 10-5 for MX between 50 MeV/c2 and 925 MeV/c2 (η′ decay). The π0-decay limit represents an improvement by a factor of 4 to 8 (depending on MX) when compared to the existing limit, whereas the η and η′ decay limits have been measured for the first time, thereby extending the MX range from 125 MeV/c2 up to 925 MeV/c2.

AB - Upper limits for the production of new light gauge bosons in π0, η and η′ decays have been obtained with the Crystal Barrel detector. The kinematically well-constrained reactions p̄p → π0π0 p have been studied, where P ≡ π0, η, η′ decays through the emission of a single photon recoiling against a missing state X. X can be a long-lived weakly interacting particle or it decays into νν̄. The resulting branching ratio upper limits (90 % C.L.) are: 6 × 10-5 for masses MX of the missing particle X lying between 65 MeV/c2 and 125 MeV/c2 (π0 decay), 6 × 10-5 for MX between 200 MeV/c2 and 525 MeV/c2 (η decay), and 4 × 10-5 for MX between 50 MeV/c2 and 925 MeV/c2 (η′ decay). The π0-decay limit represents an improvement by a factor of 4 to 8 (depending on MX) when compared to the existing limit, whereas the η and η′ decay limits have been measured for the first time, thereby extending the MX range from 125 MeV/c2 up to 925 MeV/c2.

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