New results on a search for a 33.9 MeV/c2 neutral particle from π+ decay in the NOMAD experiment

P. Astier; D. Autiero; A. Baldisseri; M. Baldo-Ceolin; M. Banner; G. Bassompierre; K. Benslama; N. Besson; I. Bird; B. Blumenfeld; F. Bobisut; J. Bouchez; S. Boyd; A. Bueno; S. Bunyatov; L. Camilleri; A. Cardini; P. W. Cattaneo; V. Cavasinni; A. Cervera-Villanueva; G. Collazuol; G. Conforto; C. Conta; M. Contalbrigo; R. Cousins; D. Daniels; H. Degaudenzi; T. Del Prete; A. De Santo; T. Dignan; L. Di Lella; E. Do Couto E Silva; J. Dumarchez; M. Ellis; T. Fazio; G. J. Feldman; R. Ferrari; D. Ferrère; V. Flaminio; M. Fraternali; J. M. Gaillard; E. Gangler; A. Geiser; D. Geppert; D. Gibin; S. N. Gninenko; A. Godley; M. C. Gonzalez-Garcia; 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; F. Juget; M. M. Kirsanov; O. Klimov; J. Kokkonen; A. V. Kovzelev; N. V. Krasnikov; A. Krasnoperov; S. Lacaprara; C. Lachaud; B. Lakić; A. Lanza; L. La Rotonda; M. Laveder; A. Letessier-Selvon; J. M. Levy; L. Linssen; A. Ljubičić; J. Long; A. Lupi; A. Marchionni; F. Martelli; X. Méchain; J. P. Mendiburu; J. P. Meyer; M. Mezzetto; S. R. Mishra; G. F. Moorhead; D. Naumov; P. Nédélec; Yu Nefedov; C. Nguyen-Mau; D. Orestano; F. Pastore; L. S. Peak; E. Pennacchio; H. Pessard; R. Petti; A. Placci; G. Polesello; D. Pollmann; A. Polyarush; B. Popov; C. Poulsen; P. Rathouit; J. Rico; C. Roda; A. Rubbia; F. Salvatore; K. Schahmaneche; B. Schmidt; M. Sevior; D. Sillou; F. J.P. Soler; G. Sozzi; D. Steele; U. Stiegler; M. Stipčević; Th Stolarczyk; M. Tareb-Reyes; G. N. Taylor; V. Tereshchenko; A. N. Toropin; A. M. Touchard; S. N. Tovey; M. T. Tran; E. Tsesmelis; J. Ulrichs; L. Vacavant; M. Valdata-Nappi; V. Valuev; F. Vannucci; K. E. Varvell; M. Veltri; V. Vercesi; G. Vidal-Sitjes; J. M. Vieira; T. Vinogradova; F. V. Weber; T. Weisse; F. F. Wilson; L. J. Winton; B. D. Yabsley; H. Zaccone; K. Zuber; P. Zuccon

doi:10.1016/S0370-2693(01)01486-1

New results on a search for a 33.9 MeV/c² neutral particle from π⁺ decay in the NOMAD experiment

P. Astier
, D. Autiero
, A. Baldisseri
, M. Baldo-Ceolin
, M. Banner
, G. Bassompierre
, K. Benslama
, N. Besson
, I. Bird
, B. Blumenfeld
, F. Bobisut
, J. Bouchez
, S. Boyd
, A. Bueno
, S. Bunyatov
, L. Camilleri
, A. Cardini
, P. W. Cattaneo
, V. Cavasinni
, A. Cervera-Villanueva

G. Collazuol, G. Conforto, C. Conta, M. Contalbrigo, R. Cousins, D. Daniels, H. Degaudenzi, T. Del Prete, A. De Santo, T. Dignan, L. Di Lella, E. Do Couto E Silva, J. Dumarchez, M. Ellis, T. Fazio, G. J. Feldman, R. Ferrari, D. Ferrère, V. Flaminio, M. Fraternali, J. M. Gaillard, E. Gangler, A. Geiser, D. Geppert, D. Gibin, S. N. Gninenko, A. Godley, M. C. Gonzalez-Garcia, 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, F. Juget, M. M. Kirsanov, O. Klimov, J. Kokkonen, A. V. Kovzelev, N. V. Krasnikov, A. Krasnoperov, S. Lacaprara, C. Lachaud, B. Lakić, A. Lanza, L. La Rotonda, M. Laveder, A. Letessier-Selvon, J. M. Levy, L. Linssen, A. Ljubičić, J. Long, A. Lupi, A. Marchionni, F. Martelli, X. Méchain, J. P. Mendiburu, J. P. Meyer, M. Mezzetto, S. R. Mishra, G. F. Moorhead, D. Naumov, P. Nédélec, Yu Nefedov, C. Nguyen-Mau, D. Orestano, F. Pastore, L. S. Peak, E. Pennacchio, H. Pessard, R. Petti, A. Placci, G. Polesello, D. Pollmann, A. Polyarush, B. Popov, C. Poulsen, P. Rathouit, J. Rico, C. Roda, A. Rubbia, F. Salvatore, K. Schahmaneche, B. Schmidt, M. Sevior, D. Sillou, F. J.P. Soler, G. Sozzi, D. Steele, U. Stiegler, M. Stipčević, Th Stolarczyk, M. Tareb-Reyes, G. N. Taylor, V. Tereshchenko, A. N. Toropin, A. M. Touchard, S. N. Tovey, M. T. Tran, E. Tsesmelis, J. Ulrichs, L. Vacavant, M. Valdata-Nappi, V. Valuev, F. Vannucci, K. E. Varvell, M. Veltri, V. Vercesi, G. Vidal-Sitjes, J. M. Vieira, T. Vinogradova, F. V. Weber, T. Weisse, F. F. Wilson, L. J. Winton, B. D. Yabsley, H. Zaccone, K. Zuber, P. Zuccon

Institute for Theoretical Physics

Universités Paris VI and VII
CERN
CEA Saclay
University of Padua
Université Savoie Mont Blanc
University of Lausanne
Johns Hopkins University
The University of Sydney
Harvard University
Swiss Federal Institute of Technology Zurich
Joint Institute for Nuclear Research
University of California at Los Angeles
University of Pavia
University of Pisa
Dept. Física At. Mol. y Nuclear
University of Urbino
TU Dortmund University
Institute for Nuclear Research of the Russian Academy of Sciences
University of Florence
University of Melbourne
Ruder Boskovic Institute
University of Calabria
University of South Carolina
Roma Tre University
University of Perugia

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

10 Scopus citations

Abstract

We report on a direct search in NOMAD for a new 33.9 MeV/c² neutral particle (X) produced in pion decay in flight, π → μX followed by the decay X → ve⁺e^-. Both decays are postulated to occur to explain the time anomaly observed by the KARMEN experiment. From the analysis of the data collected during the 1996-1998 runs with 4.1 × 10¹⁹ protons on target, a single candidate event consistent with background expectations was found. The search is sensitive to a pion branching ratio BR(π → μX) > 3.7 × 10^-15, significantly smaller than previous experimental limits.

Original language	English
Pages (from-to)	23-28
Number of pages	6
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	527
Issue number	1-2
DOIs	https://doi.org/10.1016/S0370-2693(01)01486-1
State	Published - Feb 14 2002

Keywords

Neutrino decay
Neutrino mixing

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10.1016/S0370-2693(01)01486-1

Cite this

Astier, P., Autiero, D., Baldisseri, A., Baldo-Ceolin, M., Banner, M., Bassompierre, G., Benslama, K., Besson, N., Bird, I., Blumenfeld, B., Bobisut, F., Bouchez, J., Boyd, S., Bueno, A., Bunyatov, S., Camilleri, L., Cardini, A., Cattaneo, P. W., Cavasinni, V., ... Zuccon, P. (2002). New results on a search for a 33.9 MeV/c² neutral particle from π⁺ decay in the NOMAD experiment. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 527(1-2), 23-28. https://doi.org/10.1016/S0370-2693(01)01486-1

@article{e6a4268daffb4d46b5c1d4e432631e15,

title = "New results on a search for a 33.9 MeV/c2 neutral particle from π+ decay in the NOMAD experiment",

abstract = "We report on a direct search in NOMAD for a new 33.9 MeV/c2 neutral particle (X) produced in pion decay in flight, π → μX followed by the decay X → ve+e-. Both decays are postulated to occur to explain the time anomaly observed by the KARMEN experiment. From the analysis of the data collected during the 1996-1998 runs with 4.1 × 1019 protons on target, a single candidate event consistent with background expectations was found. The search is sensitive to a pion branching ratio BR(π → μX) > 3.7 × 10-15, significantly smaller than previous experimental limits.",

keywords = "Neutrino decay, Neutrino mixing",

author = "P. Astier and D. Autiero and A. Baldisseri and M. Baldo-Ceolin and M. Banner 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 Cattaneo, \{P. W.\} and V. Cavasinni and A. Cervera-Villanueva and G. Collazuol and G. Conforto and C. Conta and M. Contalbrigo and R. Cousins and D. Daniels and H. Degaudenzi and Prete, \{T. Del\} and Santo, \{A. De\} and T. Dignan and Lella, \{L. Di\} and \{Do Couto E Silva\}, E. and J. Dumarchez and M. Ellis 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 E. Gangler and A. Geiser and D. Geppert and D. Gibin and Gninenko, \{S. N.\} and A. Godley and Gonzalez-Garcia, \{M. C.\} 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 F. Juget and Kirsanov, \{M. M.\} and O. Klimov and J. Kokkonen and Kovzelev, \{A. V.\} and Krasnikov, \{N. V.\} and A. Krasnoperov and S. Lacaprara and C. Lachaud and B. Laki{\'c} and A. Lanza and Rotonda, \{L. La\} 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 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 D. Naumov and P. N{\'e}d{\'e}lec and Yu Nefedov and C. Nguyen-Mau and D. Orestano and F. Pastore and Peak, \{L. S.\} and E. Pennacchio and H. Pessard and R. Petti and A. Placci and G. Polesello and D. Pollmann and A. Polyarush and B. Popov and C. Poulsen and P. Rathouit and J. Rico and C. Roda and A. Rubbia and F. Salvatore and K. Schahmaneche and B. Schmidt and M. Sevior and D. Sillou and Soler, \{F. J.P.\} and G. Sozzi and D. Steele and U. Stiegler and M. Stip{\v c}evi{\'c} and Th Stolarczyk and M. Tareb-Reyes and Taylor, \{G. N.\} and V. Tereshchenko and Toropin, \{A. N.\} and Touchard, \{A. M.\} and Tovey, \{S. N.\} and Tran, \{M. T.\} and E. Tsesmelis and J. Ulrichs and L. Vacavant and M. Valdata-Nappi and V. Valuev and F. Vannucci and Varvell, \{K. E.\} and M. Veltri and V. Vercesi and G. Vidal-Sitjes and Vieira, \{J. M.\} and T. Vinogradova and Weber, \{F. V.\} and T. Weisse and Wilson, \{F. F.\} and Winton, \{L. J.\} and Yabsley, \{B. D.\} and H. Zaccone and K. Zuber and P. Zuccon",

year = "2002",

month = feb,

day = "14",

doi = "10.1016/S0370-2693(01)01486-1",

language = "English",

volume = "527",

pages = "23--28",

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

issn = "0370-2693",

number = "1-2",

}

Astier, P, Autiero, D, Baldisseri, A, Baldo-Ceolin, M, Banner, M, Bassompierre, G, Benslama, K, Besson, N, Bird, I, Blumenfeld, B, Bobisut, F, Bouchez, J, Boyd, S, Bueno, A, Bunyatov, S, Camilleri, L, Cardini, A, Cattaneo, PW, Cavasinni, V, Cervera-Villanueva, A, Collazuol, G, Conforto, G, Conta, C, Contalbrigo, M, Cousins, R, Daniels, D, Degaudenzi, H, Prete, TD, Santo, AD, Dignan, T, Lella, LD, Do Couto E Silva, E, Dumarchez, J, Ellis, M, Fazio, T, Feldman, GJ, Ferrari, R, Ferrère, D, Flaminio, V, Fraternali, M, Gaillard, JM, Gangler, E, Geiser, A, Geppert, D, Gibin, D, Gninenko, SN, Godley, A, Gonzalez-Garcia, MC, 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, Juget, F, Kirsanov, MM, Klimov, O, Kokkonen, J, Kovzelev, AV, Krasnikov, NV, Krasnoperov, A, Lacaprara, S, Lachaud, C, Lakić, B, Lanza, A, Rotonda, LL, Laveder, M, Letessier-Selvon, A, Levy, JM, Linssen, L, Ljubičić, A, Long, J, Lupi, A, Marchionni, A, Martelli, F, Méchain, X, Mendiburu, JP, Meyer, JP, Mezzetto, M, Mishra, SR, Moorhead, GF, Naumov, D, Nédélec, P, Nefedov, Y, Nguyen-Mau, C, Orestano, D, Pastore, F, Peak, LS, Pennacchio, E, Pessard, H, Petti, R, Placci, A, Polesello, G, Pollmann, D, Polyarush, A, Popov, B, Poulsen, C, Rathouit, P, Rico, J, Roda, C, Rubbia, A, Salvatore, F, Schahmaneche, K, Schmidt, B, Sevior, M, Sillou, D, Soler, FJP, Sozzi, G, Steele, D, Stiegler, U, Stipčević, M, Stolarczyk, T, Tareb-Reyes, M, Taylor, GN, Tereshchenko, V, Toropin, AN, Touchard, AM, Tovey, SN, Tran, MT, Tsesmelis, E, Ulrichs, J, Vacavant, L, Valdata-Nappi, M, Valuev, V, Vannucci, F, Varvell, KE, Veltri, M, Vercesi, V, Vidal-Sitjes, G, Vieira, JM, Vinogradova, T, Weber, FV, Weisse, T, Wilson, FF, Winton, LJ, Yabsley, BD, Zaccone, H, Zuber, K & Zuccon, P 2002, 'New results on a search for a 33.9 MeV/c² neutral particle from π⁺ decay in the NOMAD experiment', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 527, no. 1-2, pp. 23-28. https://doi.org/10.1016/S0370-2693(01)01486-1

TY - JOUR

T1 - New results on a search for a 33.9 MeV/c2 neutral particle from π+ decay in the NOMAD experiment

AU - Astier, P.

AU - Autiero, D.

AU - Baldisseri, A.

AU - Baldo-Ceolin, M.

AU - Banner, M.

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 - Cattaneo, P. W.

AU - Cavasinni, V.

AU - Cervera-Villanueva, A.

AU - Collazuol, G.

AU - Conforto, G.

AU - Conta, C.

AU - Contalbrigo, M.

AU - Cousins, R.

AU - Daniels, D.

AU - Degaudenzi, H.

AU - Prete, T. Del

AU - Santo, A. De

AU - Dignan, T.

AU - Lella, L. Di

AU - Do Couto E Silva, E.

AU - Dumarchez, J.

AU - Ellis, M.

AU - Fazio, T.

AU - Feldman, G. J.

AU - Ferrari, R.

AU - Ferrère, D.

AU - Flaminio, V.

AU - Fraternali, M.

AU - Gaillard, J. M.

AU - Gangler, E.

AU - Geiser, A.

AU - Geppert, D.

AU - Gibin, D.

AU - Gninenko, S. N.

AU - Godley, A.

AU - Gonzalez-Garcia, M. C.

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 - Juget, F.

AU - Kirsanov, M. M.

AU - Klimov, O.

AU - Kokkonen, J.

AU - Kovzelev, A. V.

AU - Krasnikov, N. V.

AU - Krasnoperov, A.

AU - Lacaprara, S.

AU - Lachaud, C.

AU - Lakić, B.

AU - Lanza, A.

AU - Rotonda, L. La

AU - Laveder, M.

AU - Letessier-Selvon, A.

AU - Levy, J. M.

AU - Linssen, L.

AU - Ljubičić, A.

AU - Long, J.

AU - Lupi, A.

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 - Naumov, D.

AU - Nédélec, P.

AU - Nefedov, Yu

AU - Nguyen-Mau, C.

AU - Orestano, D.

AU - Pastore, F.

AU - Peak, L. S.

AU - Pennacchio, E.

AU - Pessard, H.

AU - Petti, R.

AU - Placci, A.

AU - Polesello, G.

AU - Pollmann, D.

AU - Polyarush, A.

AU - Popov, B.

AU - Poulsen, C.

AU - Rathouit, P.

AU - Rico, J.

AU - Roda, C.

AU - Rubbia, A.

AU - Salvatore, F.

AU - Schahmaneche, K.

AU - Schmidt, B.

AU - Sevior, M.

AU - Sillou, D.

AU - Soler, F. J.P.

AU - Sozzi, G.

AU - Steele, D.

AU - Stiegler, U.

AU - Stipčević, M.

AU - Stolarczyk, Th

AU - Tareb-Reyes, M.

AU - Taylor, G. N.

AU - Tereshchenko, V.

AU - Toropin, A. N.

AU - Touchard, A. M.

AU - Tovey, S. N.

AU - Tran, M. T.

AU - Tsesmelis, E.

AU - Ulrichs, J.

AU - Vacavant, L.

AU - Valdata-Nappi, M.

AU - Valuev, V.

AU - Vannucci, F.

AU - Varvell, K. E.

AU - Veltri, M.

AU - Vercesi, V.

AU - Vidal-Sitjes, G.

AU - Vieira, J. M.

AU - Vinogradova, T.

AU - Weber, F. V.

AU - Weisse, T.

AU - Wilson, F. F.

AU - Winton, L. J.

AU - Yabsley, B. D.

AU - Zaccone, H.

AU - Zuber, K.

AU - Zuccon, P.

PY - 2002/2/14

Y1 - 2002/2/14

N2 - We report on a direct search in NOMAD for a new 33.9 MeV/c2 neutral particle (X) produced in pion decay in flight, π → μX followed by the decay X → ve+e-. Both decays are postulated to occur to explain the time anomaly observed by the KARMEN experiment. From the analysis of the data collected during the 1996-1998 runs with 4.1 × 1019 protons on target, a single candidate event consistent with background expectations was found. The search is sensitive to a pion branching ratio BR(π → μX) > 3.7 × 10-15, significantly smaller than previous experimental limits.

AB - We report on a direct search in NOMAD for a new 33.9 MeV/c2 neutral particle (X) produced in pion decay in flight, π → μX followed by the decay X → ve+e-. Both decays are postulated to occur to explain the time anomaly observed by the KARMEN experiment. From the analysis of the data collected during the 1996-1998 runs with 4.1 × 1019 protons on target, a single candidate event consistent with background expectations was found. The search is sensitive to a pion branching ratio BR(π → μX) > 3.7 × 10-15, significantly smaller than previous experimental limits.

KW - Neutrino decay

KW - Neutrino mixing

UR - https://www.scopus.com/pages/publications/0037075074

U2 - 10.1016/S0370-2693(01)01486-1

DO - 10.1016/S0370-2693(01)01486-1

M3 - Article

AN - SCOPUS:0037075074

SN - 0370-2693

VL - 527

SP - 23

EP - 28

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 -

New results on a search for a 33.9 MeV/c² neutral particle from π⁺ decay in the NOMAD experiment

Abstract

Keywords

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