Abstract
With additional data and improved algorithms, we have enhanced the sensitivity of our appearance search for vμ → vτ oscillations in the NOMAD detector in the CERN-SPS wide-band neutrino beam. The search uses kinematic criteria to identify vτ charged current interactions followed by decay of the τ- to one of several decay modes. Our "blind" analyses of deep-inelastic scattering data taken in 1996 and 1997, combined with consistent reanalyses of previously reported 1995 data, yield no oscillation signal. For the two-family oscillation scenario, we present the contour outlining a 90% C.L. confidence region in the sin22θμτ-Δm2plane. At large Δm2, the confidence region includes sin22θμτ <1.2 × 10-3 (a limit 3.5 times more stringent than in our previous publication), while at sin22θμτ = 1, the confidence region includes Δm2 < 1.2 eV2/c4.
Original language | English (US) |
---|---|
Pages (from-to) | 169-186 |
Number of pages | 18 |
Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
Volume | 453 |
Issue number | 1-2 |
DOIs | |
State | Published - 1999 |
Externally published | Yes |
Keywords
- Neutrino oscillations
ASJC Scopus subject areas
- Nuclear and High Energy Physics
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A more sensitive search for vμ → Vτ oscillations in NOMAD. / Astier, P.; Autiero, D.; Baldisseri, A.; Baldo-Ceolin, M.; Ballocchi, G.; 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.; Cervera-Villanueva, A.; Collazuol, G.; Conforto, G.; Conta, C.; Contalbrigo, M.; Cousins, R.; Daniels, D.; Degaudenzi, H.; Del Prete, T.; de Santo, A.; Dignan, T.; di Lella, L.; do Couto e Silva, E.; Donnelly, I. J.; Dumarchez, J.; Ellis, M.; Fazio, T.; Feldman, G. J.; Ferrari, R.; Ferrère, D.; Flaminio, V.; Fraternali, M.; Gaillard, J. M.; Gandolfo, A.; Gangler, E.; Geiser, A.; Geppert, D.; Gibin, D.; Gninenko, S.; Godley, A.; Gomez-Cadenas, J. J.; 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, M.; Klimov, O.; Kokkonen, J.; Kovzelev, A.; Krasnoperov, A.; Kuznetsov, V. E.; Lacaprara, S.; Lachaud, C.; Lakić, B.; Lanza, A.; la Rotonda, L.; Laveder, M.; Letessier-Selvon, A.; Levy, J. M.; Linssen, L.; Ljubičić, A.; Long, J.; Lupi, A.; Manola-Poggioli, E.; Marchionni, A.; Martelli, F.; Méchain, X.; Mendiburu, J. P.; Meyer, J. P.; Mezzetto, M.; Mishra, S. R.; Moorhead, G. F.; Mossuz, L.; Nédélec, P.; Nefedov, Y.; Nguyen-Mau, C.; Orestano, D.; Pastore, F.; Peak, L. S.; Pennacchio, E.; Pessard, H.; Petti, R.; Placci, A.; Pluquet, A.; Polesello, G.; Pollmann, D.; Popov, B.; Poulsen, C.; Rathouit, P.; Reno, R.; Renzoni, G.; Rico, J.; Riemann, P.; Roda, C.; Rubbia, A.; Salvatore, F.; Schahmaneche, K.; Schmidt, B.; Schmidt, T.; Segneri, G.; Sevior, M.; Sillou, D.; Soler, F. J.P.; Sozzi, G.; Steele, D.; Steininger, M.; Stiegler, U.; Stipčević, M.; Stolarczyk, T.; Tareb-Reyes, M.; Taylor, G. N.; Tereshchenko, V.; Toropin, A.; Touchard, A. M.; Tovey, S. N.; Tran, M. T.; Tsesmelis, E.; Ulrichs, J.; Vacavant, L.; Valdata-Nappi, M.; Valuev, V.; Vannucci, F.; Varvell, K. E.; Veltri, M.; Vercesi, V.; Verkindt, D.; Vieira, J. M.; Vinogradova, T.; Vo, M. K.; Volkov, S.; Weber, F. V.; Weisse, T.; Wilson, F. F.; Winton, L. J.; Yabsley, B. D.; Zaccone, H.; Zuber, K.; Zuccon, P.
In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 453, No. 1-2, 1999, p. 169-186.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - A more sensitive search for vμ → Vτ oscillations in NOMAD
AU - Astier, P.
AU - Autiero, D.
AU - Baldisseri, A.
AU - Baldo-Ceolin, M.
AU - Ballocchi, G.
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 - Del Prete, T.
AU - de Santo, A.
AU - Dignan, T.
AU - di Lella, L.
AU - do Couto e Silva, E.
AU - Donnelly, I. J.
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 - Gandolfo, A.
AU - Gangler, E.
AU - Geiser, A.
AU - Geppert, D.
AU - Gibin, D.
AU - Gninenko, S.
AU - Godley, A.
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.
AU - Klimov, O.
AU - Kokkonen, J.
AU - Kovzelev, A.
AU - Krasnoperov, A.
AU - Kuznetsov, V. E.
AU - Lacaprara, S.
AU - Lachaud, C.
AU - Lakić, B.
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 - Pessard, H.
AU - Petti, R.
AU - Placci, A.
AU - Pluquet, A.
AU - Polesello, G.
AU - Pollmann, D.
AU - Popov, B.
AU - Poulsen, C.
AU - Rathouit, P.
AU - Reno, R.
AU - Renzoni, G.
AU - Rico, J.
AU - Riemann, P.
AU - Roda, C.
AU - Rubbia, A.
AU - Salvatore, F.
AU - Schahmaneche, K.
AU - Schmidt, B.
AU - Schmidt, T.
AU - Segneri, G.
AU - Sevior, M.
AU - Sillou, D.
AU - Soler, F. J.P.
AU - Sozzi, G.
AU - Steele, D.
AU - Steininger, M.
AU - Stiegler, U.
AU - Stipčević, M.
AU - Stolarczyk, T.
AU - Tareb-Reyes, M.
AU - Taylor, G. N.
AU - Tereshchenko, V.
AU - Toropin, A.
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 - Verkindt, D.
AU - Vieira, J. M.
AU - Vinogradova, T.
AU - Vo, M. K.
AU - Volkov, S.
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.
N1 - Funding Information: We thank the management and staff of CERN and of all participating institutes for their vigorous support of the experiment. Particular thanks are due to the CERN accelerator and beam-line staff for the magnificent performance of the neutrino beam. The following funding agencies have contributed to this experiment: Australian Research Council (ARC) and Department of Industry, Science, and Resources (DISR), Australia; Institut National de Physique Nucléaire et Physique des Particules (IN2P3), Commissariat à l'Energie Atomique (CEA), Ministère de l'Education Nationale, de l'Enseignement Supérieur et de la Recherche, France; Bundesministerium für Bildung und Forschung (BMBF, contract 05 6DO52), Germany; Istituto Nazionale di Fisica Nucleare (INFN), Italy; Russian Foundation for Basic Research, Institute for Nuclear Research of the Russian Academy of Sciences, Russia; Fonds National Suisse de la Recherche Scientifique, Switzerland; Department of Energy, National Science Foundation (grant PHY-9526278), the Sloan and the Cottrell Foundations, USA. F.J.P. Soler is supported by a TMR Fellowship from the European Commission.
PY - 1999
Y1 - 1999
N2 - With additional data and improved algorithms, we have enhanced the sensitivity of our appearance search for vμ → vτ oscillations in the NOMAD detector in the CERN-SPS wide-band neutrino beam. The search uses kinematic criteria to identify vτ charged current interactions followed by decay of the τ- to one of several decay modes. Our "blind" analyses of deep-inelastic scattering data taken in 1996 and 1997, combined with consistent reanalyses of previously reported 1995 data, yield no oscillation signal. For the two-family oscillation scenario, we present the contour outlining a 90% C.L. confidence region in the sin22θμτ-Δm2plane. At large Δm2, the confidence region includes sin22θμτ <1.2 × 10-3 (a limit 3.5 times more stringent than in our previous publication), while at sin22θμτ = 1, the confidence region includes Δm2 < 1.2 eV2/c4.
AB - With additional data and improved algorithms, we have enhanced the sensitivity of our appearance search for vμ → vτ oscillations in the NOMAD detector in the CERN-SPS wide-band neutrino beam. The search uses kinematic criteria to identify vτ charged current interactions followed by decay of the τ- to one of several decay modes. Our "blind" analyses of deep-inelastic scattering data taken in 1996 and 1997, combined with consistent reanalyses of previously reported 1995 data, yield no oscillation signal. For the two-family oscillation scenario, we present the contour outlining a 90% C.L. confidence region in the sin22θμτ-Δm2plane. At large Δm2, the confidence region includes sin22θμτ <1.2 × 10-3 (a limit 3.5 times more stringent than in our previous publication), while at sin22θμτ = 1, the confidence region includes Δm2 < 1.2 eV2/c4.
KW - Neutrino oscillations
UR - http://www.scopus.com/inward/record.url?scp=4243754778&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=4243754778&partnerID=8YFLogxK
U2 - 10.1016/S0370-2693(99)00303-2
DO - 10.1016/S0370-2693(99)00303-2
M3 - Article
AN - SCOPUS:4243754778
VL - 453
SP - 169
EP - 186
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 -