Updated results from the nu(tau) appearance search in NOMAD

Authors
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, PW 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 Silva, EDE Dumarchez, J Ellis, M Feldman, GJ Ferrari, R Ferrere, D Flaminio, V Fraternali, M Gaillard, JM Gangler, E Geiser, A Geppert, D Gibin, D Gninenko, S Godley, A Gomez-Cadenas, JJ Gosset, J Gossling, C Gouanere, 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, VE Lacaprara, S Lachaud, C Lakic, B Lanza, A La Rotonda, L Laveder, M Letessier-Selvon, A Levy, JM Linssen, L Ljubicic, A Long, J Lupi, A Marchionni, A Martelli, F Mechain, X Mendiburu, JP Meyer, JP Mezzetto, M Mishra, SR Moorhead, GF Nedelec, 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 Rebuffi, L Rico, J Roda, C Rubbia, A Salvatore, F Schahmaneche, K Schmidt, B Sevior, M Sillou, D Soler, FJP Sozzi, G Steele, D Steininger, M Stiegler, U Stipcevic, M Stolarczyk, T Tareb-Reyes, M Taylor, GN Tereshchenko, V Toropin, A 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 Vieira, JM Vinogradova, T Weber, FV Weisse, T Wilson, FF Winton, LJ Yabsley, BD Zaccone, H Zuber, K Zuccon, P
Citation
P. Astier et al., Updated results from the nu(tau) appearance search in NOMAD, PHYS LETT B, 483(4), 2000, pp. 387-404
Citations number
20
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
0370-2693 → ACNP
Volume
483
Issue
4
Year of publication
2000
Pages
387 - 404
Database
ISI
SICI code
0370-2693(20000622)483:4<387:URFTNA>2.0.ZU;2-K
Abstract
Updated results from the appearance searches for nu(mu) --> nu(tau) and nu( e) --> nu(tau) oscillations in the full NOMAD data sample are reported. The increased data and the use of more refined kinematic schemes for the nu(ta u) CC selection allow a significant improvement of the overall sensitivity. The "blind analysis" of both the deep-inelastic and the low multiplicity s amples yields no evidence for an oscillation signal. In the two-family osci llation scenario, this sets a 90% C.L. region in the sin(2)2 theta(mu tau) - Delta m(2) plane which includes sin(2)2 theta(mu tau) < 4.4 X 10(-4) at l arge Delta m(2) and Delta m(2) < 0.8 eV(2)/c(4) at sin(2)2 theta(mu tau) = 1. The corresponding contour in the nu(e) --> nu(tau) oscillation hypothesi s results in sin(2)2 theta(e tau) < 2.2 X 10(-2) at large Delta m(2) and De lta m(2) < 6.5 eV(2)/c(4) at sin(2)2 theta(e tau) = 1. (C) 2000 Elsevier Sc ience B.V. All rights reserved.