Updated results from the ν(τ) appearance search in NOMAD

D. Autiero, A. Baldisseri, M. Baldo-Ceolin, G. Ballocchi, M. Banner, G. Bassompierre, K. Benslama, N. Besson, I. Bird, B. Blumenfeld, F. Bobisut, J. Bouchez, S. Boyd, A. Bueno, A. Bunyatov, L. Camilleri, A. Cardini, P. W. Cattaneo, V. Cavasinni, A. Cervera-VillanuevaG. Collazuol, G. Conforto, C. Conta, M. Contalbrigo, R. Cousins, D. Daniels, H. Degaudenzi, Del Prete, A. De Santo, T. Dignan, A. Di Lella, E. do Couto e Silva, J. Dumarchez, M. Ellis, G. J. Feldman, R. Ferrari, D. Ferrère, V. Flaminio, M. Fraternali, J. M. Gaillard, E. Gangler, A. Geiser, D. Geppert, D. Gibin, S. Gninenko, A. Godley, J. J. Gomez-Cadenas, J. Gosset, C. Gößling, M. Gouanère, A. Grant, G. Graziani, A. Guglielm, C. Hagner, J. Hernando, D. Hubbard, P. Hurst, N. Hyett, E. Iacopini, C. Joseph, F. Juget, M. Kirsanov, O. Klimov, J. Kokkonen, A. Kovzelev, A. Krasnoperov, V. E. Kuznetsov, S. Lacaprara, C. Lachaud, B. Lakic, A. Lanza, 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, P. Nédélec, Y. 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, L. Rebuffi, J. Rico, C. Roda, A. Rubbia, F. Salvatore, K. Schahmaneche, B. Schmidt, M. Sevior, D. Sillou, F. J.P. Soler, G. Sozzi, D. Steele, M. Steininger, U. Stiegler, M. Stipčević, TH Stolarczyk, M. Tareb-Reyes, G. N. Taylor, V. Tereshchenko, A. 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, 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

Research output: Contribution to journalArticle

21 Scopus citations

Abstract

Updated results from the appearance searches for ν(υ) → ν(τ) and ν(e) → ν(τ) oscillations in the full NOMAD data sample are reported. The increased data and the use of more refined kinematic schemes for the ν(τ) CC selection allow a significant improvement of the overall sensitivity. The 'blind analysis' of both the deep-inelastic and the low multiplicity samples yields no evidence for an oscillation signal. In the two-family oscillation scenario, this sets a 90% C.L. region in the sin 2 2θ(μτ) - Δm 2 plane which includes sin 2 2θ(μτ) < 4.4 x 10 -4 at large Δm 2 and Δm 2 <0.8 eV 2 /c 4 at sin 2 2θ(μτ) = 1. The corresponding contour in the v(e) → ν(τ) oscillation hypothesis results in sin 2 2θ(eτ) < 2.2 x 10 -2 at large Δm 2 and Δm 2 <6.5 eV 2 /c 4 at sin 2 2θ(eτ) = 1. (C) 2000 Elsevier Science B.V.

Original languageEnglish (US)
Pages (from-to)387-404
Number of pages18
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume483
Issue number4
DOIs
StatePublished - Jun 22 2000
Externally publishedYes

Keywords

  • Neutrino oscillations

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    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, A., Camilleri, L., Cardini, A., Cattaneo, P. W., Cavasinni, V., ... Zuccon, P. (2000). Updated results from the ν(τ) appearance search in NOMAD. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 483(4), 387-404. https://doi.org/10.1016/S0370-2693(00)00611-0