Search for a new gauge boson in π0 decays

J. Altegoer; P. Astier; D. Autiero; A. Baldisseri; M. Baldo-Ceolin; G. Ballocchi; M. Banner; S. Basa; G. Bassompierre; K. Benslama; N. Besson; I. Bird; B. Blumenfeld; F. Bobisut; J. Bouchez; S. Boyd; A. Bueno; S. Bunyatov; L. Camilleri; A. Cardini; A. Castera; P. W. Cattaneo; V. Cavasinni; A. Cervera-Villanueva; G. M. Collazuol; G. Conforto; C. Conta; M. Contalbrigo; R. Cousins; D. Daniels; A. De Santo; T. Del Prete; T. Dignan; L. Di Lella; E. do Couto e Silva; I. J. Donnelly; J. Dumarchez; T. Fazio; G. J. Feldman; R. Ferrari; D. Ferrère; V. Flaminio; M. Fraternali; J. M. Gaillard; P. Galumian; E. Gangler; A. Geiser; D. Geppert; D. Gibin; S. N. Gninenko; J. J. Gomez-Cadenas; J. Gosset; C. Gößling; M. Gouanère; A. Grant; G. Graziani; A. Guglielmi; C. Hagner; J. Hernando; D. Hubbard; P. Hurst; N. Hyett; E. Iacopini; C. Joseph; D. Kekez; B. Khomenko; M. M. Kirsanov; O. Klimov; J. Kokkonen; A. V. Kovzelev; V. Kuznetsov; S. Lacaprara; A. Lanza; L. La Rotonda; M. Laveder; A. Letessier-Selvon; J. M. Levy; L. Linssen; A. Ljubičić; J. Long; A. Lupi; E. Manola-Poggioli; A. Marchionni; F. Martelli; X. Méchain; J. P. Mendiburu; J. P. Meyer; M. Mezzetto; S. R. Mishra; G. F. Moorhead; L. Mossuz; P. Nédélec; Y. Nefedov; C. Nguyen-Mau; D. Orestano; F. Pastore; L. S. Peak; E. Pennacchio; J. P. Perroud; H. Pessard; R. Petti; A. Placci; H. Plothow-Besch; A. Pluquet; G. Polesello; D. Pollmann; B. G. Pope; B. Popov; C. Poulsen; P. Rathouit; C. Roda; A. Rubbia; F. Salvatore; D. Scannicchio; K. Schahmaneche; B. Schmidt; A. Sconza; M. Serrano; M. E. Sevior; D. Sillou; F. J.P. Soler; G. Sozzi; D. Steele; P. Steffen; M. Steininger; U. Stiegler; M. Stipčević; T. Stolarczyk; M. Tareb-Reyes; G. N. Taylor; S. Tereshchenko; A. N. Toropin; A. M. Touchard; S. N. Tovey; M. T. Tran; E. Tsesmelis; J. Ulrichs; V. Uros; M. Valdata-Nappi; V. Valuev; F. Vannucci; K. E. Varvell; M. Veltri; V. Vercesi; D. Verkindt; J. M. Vieira; T. Vinogradova; M. K. Vo; S. A. Volkov; F. Weber; T. Weisse; M. Werlen; F. Wilson; L. J. Winton; B. D. Yabsley; H. Zaccone; K. Zuber

doi:10.1016/S0370-2693(98)00402-X

Search for a new gauge boson in π⁰ decays

J. Altegoer, P. Astier, D. Autiero, A. Baldisseri, M. Baldo-Ceolin, G. Ballocchi, M. Banner, S. Basa, G. Bassompierre, K. Benslama, N. Besson, I. Bird, B. Blumenfeld, F. Bobisut, J. Bouchez, S. Boyd, A. Bueno, S. Bunyatov, L. Camilleri, A. CardiniA. Castera, P. W. Cattaneo, V. Cavasinni, A. Cervera-Villanueva, G. M. Collazuol, G. Conforto, C. Conta, M. Contalbrigo, R. Cousins, D. Daniels, A. De Santo, T. Del Prete, T. Dignan, L. Di Lella, E. do Couto e Silva, I. J. Donnelly, J. Dumarchez, T. Fazio, G. J. Feldman, R. Ferrari, D. Ferrère, V. Flaminio, M. Fraternali, J. M. Gaillard, P. Galumian, E. Gangler, A. Geiser, D. Geppert, D. Gibin, S. N. Gninenko, J. J. Gomez-Cadenas, J. Gosset, C. Gößling, M. Gouanère, A. Grant, G. Graziani, A. Guglielmi, C. Hagner, J. Hernando, D. Hubbard, P. Hurst, N. Hyett, E. Iacopini, C. Joseph, D. Kekez, B. Khomenko, M. M. Kirsanov, O. Klimov, J. Kokkonen, A. V. Kovzelev, V. Kuznetsov, S. Lacaprara, A. Lanza, L. La Rotonda, M. Laveder, A. Letessier-Selvon, J. M. Levy, L. Linssen, A. Ljubičić, J. Long, A. Lupi, E. Manola-Poggioli, A. Marchionni, F. Martelli, X. Méchain, J. P. Mendiburu, J. P. Meyer, M. Mezzetto, S. R. Mishra, G. F. Moorhead, L. Mossuz, P. Nédélec, Y. Nefedov, C. Nguyen-Mau, D. Orestano, F. Pastore, L. S. Peak, E. Pennacchio, J. P. Perroud, H. Pessard, R. Petti, A. Placci, H. Plothow-Besch, A. Pluquet, G. Polesello, D. Pollmann, B. G. Pope, B. Popov, C. Poulsen, P. Rathouit, C. Roda, A. Rubbia, F. Salvatore, D. Scannicchio, K. Schahmaneche, B. Schmidt, A. Sconza, M. Serrano, M. E. Sevior, D. Sillou, F. J.P. Soler, G. Sozzi, D. Steele, P. Steffen, M. Steininger, U. Stiegler, M. Stipčević, T. Stolarczyk, M. Tareb-Reyes, G. N. Taylor, S. Tereshchenko, A. N. Toropin, A. M. Touchard, S. N. Tovey, M. T. Tran, E. Tsesmelis, J. Ulrichs, V. Uros, M. Valdata-Nappi, V. Valuev, F. Vannucci, K. E. Varvell, M. Veltri, V. Vercesi, D. Verkindt, J. M. Vieira, T. Vinogradova, M. K. Vo, S. A. Volkov, F. Weber, T. Weisse, M. Werlen, F. Wilson, L. J. Winton, B. D. Yabsley, H. Zaccone, K. Zuber

Research output: Contribution to journal › Article › peer-review

Abstract

A search was made for a new light gauge boson X which might be produced in π⁰ → γ + X decay from neutral pions generated by 450 GeV protons in the CERN SPS neutrino target. The X's would penetrate the downstream shielding and be observed in the NOMAD detector via the Primakoff effect, in the process of X → π⁰ conversion in the external Coulomb field of a nucleus. With 1.45 × 10¹⁸ protons on target, 20 candidate events with energy between 8 and 140 GeV were found from the analysis of neutrino data. This number is in agreement with the expectation of 18.1 ± 2.8 background events from standard neutrino processes. A new 90 % C.L. upper limit on the branching ratio Br(π⁰ → γ + X) < (3.3 to 1.9) × 10^-5 for X masses ranging from O to 120 MeV/c² is obtained.

Original language	English (US)
Pages (from-to)	197-205
Number of pages	9
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	428
Issue number	1-2
DOIs	https://doi.org/10.1016/S0370-2693(98)00402-X
State	Published - May 28 1998
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/S0370-2693(98)00402-X

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Cite this

Altegoer, J., Astier, P., Autiero, D., Baldisseri, A., Baldo-Ceolin, M., Ballocchi, G., Banner, M., Basa, S., Bassompierre, G., Benslama, K., Besson, N., Bird, I., Blumenfeld, B., Bobisut, F., Bouchez, J., Boyd, S., Bueno, A., Bunyatov, S., Camilleri, L., ... Zuber, K. (1998). Search for a new gauge boson in π⁰ decays. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 428(1-2), 197-205. https://doi.org/10.1016/S0370-2693(98)00402-X

Altegoer, J, Astier, P, Autiero, D, Baldisseri, A, Baldo-Ceolin, M, Ballocchi, G, Banner, M, Basa, S, Bassompierre, G, Benslama, K, Besson, N, Bird, I, Blumenfeld, B, Bobisut, F, Bouchez, J, Boyd, S, Bueno, A, Bunyatov, S, Camilleri, L, Cardini, A, Castera, A, Cattaneo, PW, Cavasinni, V, Cervera-Villanueva, A, Collazuol, GM, Conforto, G, Conta, C, Contalbrigo, M, Cousins, R, Daniels, D, De Santo, A, Del Prete, T, Dignan, T, Di Lella, L, do Couto e Silva, E, Donnelly, IJ, Dumarchez, J, Fazio, T, Feldman, GJ, Ferrari, R, Ferrère, D, Flaminio, V, Fraternali, M, Gaillard, JM, Galumian, P, Gangler, E, Geiser, A, Geppert, D, Gibin, D, Gninenko, SN, Gomez-Cadenas, JJ, Gosset, J, Gößling, C, Gouanère, M, Grant, A, Graziani, G, Guglielmi, A, Hagner, C, Hernando, J, Hubbard, D, Hurst, P, Hyett, N, Iacopini, E, Joseph, C, Kekez, D, Khomenko, B, Kirsanov, MM, Klimov, O, Kokkonen, J, Kovzelev, AV, Kuznetsov, V, Lacaprara, S, Lanza, A, La Rotonda, L, Laveder, M, Letessier-Selvon, A, Levy, JM, Linssen, L, Ljubičić, A, Long, J, Lupi, A, Manola-Poggioli, E, Marchionni, A, Martelli, F, Méchain, X, Mendiburu, JP, Meyer, JP, Mezzetto, M, Mishra, SR, Moorhead, GF, Mossuz, L, Nédélec, P, Nefedov, Y, Nguyen-Mau, C, Orestano, D, Pastore, F, Peak, LS, Pennacchio, E, Perroud, JP, Pessard, H, Petti, R, Placci, A, Plothow-Besch, H, Pluquet, A, Polesello, G, Pollmann, D, Pope, BG, Popov, B, Poulsen, C, Rathouit, P, Roda, C, Rubbia, A, Salvatore, F, Scannicchio, D, Schahmaneche, K, Schmidt, B, Sconza, A, Serrano, M, Sevior, ME, Sillou, D, Soler, FJP, Sozzi, G, Steele, D, Steffen, P, Steininger, M, Stiegler, U, Stipčević, M, Stolarczyk, T, Tareb-Reyes, M, Taylor, GN, Tereshchenko, S, Toropin, AN, Touchard, AM, Tovey, SN, Tran, MT, Tsesmelis, E, Ulrichs, J, Uros, V, Valdata-Nappi, M, Valuev, V, Vannucci, F, Varvell, KE, Veltri, M, Vercesi, V, Verkindt, D, Vieira, JM, Vinogradova, T, Vo, MK, Volkov, SA, Weber, F, Weisse, T, Werlen, M, Wilson, F, Winton, LJ, Yabsley, BD, Zaccone, H & Zuber, K 1998, 'Search for a new gauge boson in π⁰ decays', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 428, no. 1-2, pp. 197-205. https://doi.org/10.1016/S0370-2693(98)00402-X

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title = "Search for a new gauge boson in π0 decays",

abstract = "A search was made for a new light gauge boson X which might be produced in π0 → γ + X decay from neutral pions generated by 450 GeV protons in the CERN SPS neutrino target. The X's would penetrate the downstream shielding and be observed in the NOMAD detector via the Primakoff effect, in the process of X → π0 conversion in the external Coulomb field of a nucleus. With 1.45 × 1018 protons on target, 20 candidate events with energy between 8 and 140 GeV were found from the analysis of neutrino data. This number is in agreement with the expectation of 18.1 ± 2.8 background events from standard neutrino processes. A new 90 % C.L. upper limit on the branching ratio Br(π0 → γ + X) < (3.3 to 1.9) × 10-5 for X masses ranging from O to 120 MeV/c2 is obtained.",

author = "J. Altegoer and P. Astier and D. Autiero and A. Baldisseri and M. Baldo-Ceolin and G. Ballocchi and M. Banner and S. Basa and G. Bassompierre and K. Benslama and N. Besson and I. Bird and B. Blumenfeld and F. Bobisut and J. Bouchez and S. Boyd and A. Bueno and S. Bunyatov and L. Camilleri and A. Cardini and A. Castera and Cattaneo, {P. W.} and V. Cavasinni and A. Cervera-Villanueva and Collazuol, {G. M.} and G. Conforto and C. Conta and M. Contalbrigo and R. Cousins and D. Daniels and {De Santo}, A. and {Del Prete}, T. and T. Dignan and {Di Lella}, L. and {do Couto e Silva}, E. and Donnelly, {I. J.} and J. Dumarchez and T. Fazio and Feldman, {G. J.} and R. Ferrari and D. Ferr{\`e}re and V. Flaminio and M. Fraternali and Gaillard, {J. M.} and P. Galumian and E. Gangler and A. Geiser and D. Geppert and D. Gibin and Gninenko, {S. N.} and Gomez-Cadenas, {J. J.} and J. Gosset and C. G{\"o}{\ss}ling and M. Gouan{\`e}re and A. Grant and G. Graziani and A. Guglielmi and C. Hagner and J. Hernando and D. Hubbard and P. Hurst and N. Hyett and E. Iacopini and C. Joseph and D. Kekez and B. Khomenko and Kirsanov, {M. M.} and O. Klimov and J. Kokkonen and Kovzelev, {A. V.} and V. Kuznetsov and S. Lacaprara and A. Lanza and {La Rotonda}, L. and M. Laveder and A. Letessier-Selvon and Levy, {J. M.} and L. Linssen and A. Ljubi{\v c}i{\'c} and J. Long and A. Lupi and E. Manola-Poggioli and A. Marchionni and F. Martelli and X. M{\'e}chain and Mendiburu, {J. P.} and Meyer, {J. P.} and M. Mezzetto and Mishra, {S. R.} and Moorhead, {G. F.} and L. Mossuz and P. N{\'e}d{\'e}lec and Y. Nefedov and C. Nguyen-Mau and D. Orestano and F. Pastore and Peak, {L. S.} and E. Pennacchio and Perroud, {J. P.} and H. Pessard and R. Petti and A. Placci and H. Plothow-Besch and A. Pluquet and G. Polesello and D. Pollmann and Pope, {B. G.} and B. Popov and C. Poulsen and P. Rathouit and C. Roda and A. Rubbia and F. Salvatore and D. Scannicchio and K. Schahmaneche and B. Schmidt and A. Sconza and M. Serrano and Sevior, {M. E.} and D. Sillou and Soler, {F. J.P.} and G. Sozzi and D. Steele and P. Steffen and M. Steininger and U. Stiegler and M. Stip{\v c}evi{\'c} and T. Stolarczyk and M. Tareb-Reyes and Taylor, {G. N.} and S. Tereshchenko and Toropin, {A. N.} and Touchard, {A. M.} and Tovey, {S. N.} and Tran, {M. T.} and E. Tsesmelis and J. Ulrichs and V. Uros and M. Valdata-Nappi and V. Valuev and F. Vannucci and Varvell, {K. E.} and M. Veltri and V. Vercesi and D. Verkindt and Vieira, {J. M.} and T. Vinogradova and Vo, {M. K.} and Volkov, {S. A.} and F. Weber and T. Weisse and M. Werlen and F. Wilson and Winton, {L. J.} and Yabsley, {B. D.} and H. Zaccone and K. Zuber",

year = "1998",

month = may,

day = "28",

doi = "10.1016/S0370-2693(98)00402-X",

language = "English (US)",

volume = "428",

pages = "197--205",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier B.V.",

number = "1-2",

}

TY - JOUR

T1 - Search for a new gauge boson in π0 decays

AU - Altegoer, J.

AU - Astier, P.

AU - Autiero, D.

AU - Baldisseri, A.

AU - Baldo-Ceolin, M.

AU - Ballocchi, G.

AU - Banner, M.

AU - Basa, S.

AU - Bassompierre, G.

AU - Benslama, K.

AU - Besson, N.

AU - Bird, I.

AU - Blumenfeld, B.

AU - Bobisut, F.

AU - Bouchez, J.

AU - Boyd, S.

AU - Bueno, A.

AU - Bunyatov, S.

AU - Camilleri, L.

AU - Cardini, A.

AU - Castera, A.

AU - Cattaneo, P. W.

AU - Cavasinni, V.

AU - Cervera-Villanueva, A.

AU - Collazuol, G. M.

AU - Conforto, G.

AU - Conta, C.

AU - Contalbrigo, M.

AU - Cousins, R.

AU - Daniels, D.

AU - De Santo, A.

AU - Del Prete, T.

AU - Dignan, T.

AU - Di Lella, L.

AU - do Couto e Silva, E.

AU - Donnelly, I. J.

AU - Dumarchez, J.

AU - Fazio, T.

AU - Feldman, G. J.

AU - Ferrari, R.

AU - Ferrère, D.

AU - Flaminio, V.

AU - Fraternali, M.

AU - Gaillard, J. M.

AU - Galumian, P.

AU - Gangler, E.

AU - Geiser, A.

AU - Geppert, D.

AU - Gibin, D.

AU - Gninenko, S. N.

AU - Gomez-Cadenas, J. J.

AU - Gosset, J.

AU - Gößling, C.

AU - Gouanère, M.

AU - Grant, A.

AU - Graziani, G.

AU - Guglielmi, A.

AU - Hagner, C.

AU - Hernando, J.

AU - Hubbard, D.

AU - Hurst, P.

AU - Hyett, N.

AU - Iacopini, E.

AU - Joseph, C.

AU - Kekez, D.

AU - Khomenko, B.

AU - Kirsanov, M. M.

AU - Klimov, O.

AU - Kokkonen, J.

AU - Kovzelev, A. V.

AU - Kuznetsov, V.

AU - Lacaprara, S.

AU - Lanza, A.

AU - La Rotonda, L.

AU - Laveder, M.

AU - Letessier-Selvon, A.

AU - Levy, J. M.

AU - Linssen, L.

AU - Ljubičić, A.

AU - Long, J.

AU - Lupi, A.

AU - Manola-Poggioli, E.

AU - Marchionni, A.

AU - Martelli, F.

AU - Méchain, X.

AU - Mendiburu, J. P.

AU - Meyer, J. P.

AU - Mezzetto, M.

AU - Mishra, S. R.

AU - Moorhead, G. F.

AU - Mossuz, L.

AU - Nédélec, P.

AU - Nefedov, Y.

AU - Nguyen-Mau, C.

AU - Orestano, D.

AU - Pastore, F.

AU - Peak, L. S.

AU - Pennacchio, E.

AU - Perroud, J. P.

AU - Pessard, H.

AU - Petti, R.

AU - Placci, A.

AU - Plothow-Besch, H.

AU - Pluquet, A.

AU - Polesello, G.

AU - Pollmann, D.

AU - Pope, B. G.

AU - Popov, B.

AU - Poulsen, C.

AU - Rathouit, P.

AU - Roda, C.

AU - Rubbia, A.

AU - Salvatore, F.

AU - Scannicchio, D.

AU - Schahmaneche, K.

AU - Schmidt, B.

AU - Sconza, A.

AU - Serrano, M.

AU - Sevior, M. E.

AU - Sillou, D.

AU - Soler, F. J.P.

AU - Sozzi, G.

AU - Steele, D.

AU - Steffen, P.

AU - Steininger, M.

AU - Stiegler, U.

AU - Stipčević, M.

AU - Stolarczyk, T.

AU - Tareb-Reyes, M.

AU - Taylor, G. N.

AU - Tereshchenko, S.

AU - Toropin, A. N.

AU - Touchard, A. M.

AU - Tovey, S. N.

AU - Tran, M. T.

AU - Tsesmelis, E.

AU - Ulrichs, J.

AU - Uros, V.

AU - Valdata-Nappi, M.

AU - Valuev, V.

AU - Vannucci, F.

AU - Varvell, K. E.

AU - Veltri, M.

AU - Vercesi, V.

AU - Verkindt, D.

AU - Vieira, J. M.

AU - Vinogradova, T.

AU - Vo, M. K.

AU - Volkov, S. A.

AU - Weber, F.

AU - Weisse, T.

AU - Werlen, M.

AU - Wilson, F.

AU - Winton, L. J.

AU - Yabsley, B. D.

AU - Zaccone, H.

AU - Zuber, K.

PY - 1998/5/28

Y1 - 1998/5/28

N2 - A search was made for a new light gauge boson X which might be produced in π0 → γ + X decay from neutral pions generated by 450 GeV protons in the CERN SPS neutrino target. The X's would penetrate the downstream shielding and be observed in the NOMAD detector via the Primakoff effect, in the process of X → π0 conversion in the external Coulomb field of a nucleus. With 1.45 × 1018 protons on target, 20 candidate events with energy between 8 and 140 GeV were found from the analysis of neutrino data. This number is in agreement with the expectation of 18.1 ± 2.8 background events from standard neutrino processes. A new 90 % C.L. upper limit on the branching ratio Br(π0 → γ + X) < (3.3 to 1.9) × 10-5 for X masses ranging from O to 120 MeV/c2 is obtained.

AB - A search was made for a new light gauge boson X which might be produced in π0 → γ + X decay from neutral pions generated by 450 GeV protons in the CERN SPS neutrino target. The X's would penetrate the downstream shielding and be observed in the NOMAD detector via the Primakoff effect, in the process of X → π0 conversion in the external Coulomb field of a nucleus. With 1.45 × 1018 protons on target, 20 candidate events with energy between 8 and 140 GeV were found from the analysis of neutrino data. This number is in agreement with the expectation of 18.1 ± 2.8 background events from standard neutrino processes. A new 90 % C.L. upper limit on the branching ratio Br(π0 → γ + X) < (3.3 to 1.9) × 10-5 for X masses ranging from O to 120 MeV/c2 is obtained.

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U2 - 10.1016/S0370-2693(98)00402-X

DO - 10.1016/S0370-2693(98)00402-X

M3 - Article

AN - SCOPUS:0346551486

SN - 0370-2693

VL - 428

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EP - 205

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

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

IS - 1-2

ER -