Final NOMAD results on nu(mu) -> nu(tau) and nu(e) -> nu(tau) oscillationsincluding a new search for nu(tau) appearance using hadronic tau decays

Authors
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 Chukanov, 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 Kustov, D 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 Naumov, D 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 Rico, J Riemann, P Roda, C Rubbia, A Salvatore, F Schahmaneche, K Schmidt, B Schmidt, T Sconza, A Sevior, M Sillou, D Soler, FJP Sozzi, G Steele, D 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 Vidal-Sitjes, G 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., Final NOMAD results on nu(mu) -> nu(tau) and nu(e) -> nu(tau) oscillationsincluding a new search for nu(tau) appearance using hadronic tau decays, NUCL PHYS B, 611(1-3), 2001, pp. 3-39
Citations number
39
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
NUCLEAR PHYSICS B
ISSN journal
0550-3213 → ACNP
Volume
611
Issue
1-3
Year of publication
2001
Pages
3 - 39
Database
ISI
SICI code
0550-3213(20010917)611:1-3<3:FNRON->2.0.ZU;2-7
Abstract
Results from the v, appearance search in a neutrino beam using the full NOM AD data sample are reported. A new analysis unifies all the hadronic tau de cays, significantly improving the overall sensitivity of the experiment to oscillations. The "blind analysis" of all topologies yields no evidence for an oscillation signal. In the two-family oscillation scenario, this sets a 90% CL allowed region in the sin(2)2 theta (mu tau)-Deltam(2) plane which includes sin(2)2 theta (mu tau) < 3.3 x 10(-4) at large Deltam(2) and Delta m(2) < 0.7 eV(2)/c(4) at sin(2) 2 theta (mu tau) = 1. The corresponding con tour in the nu (e) --> nu (tau) oscillation hypothesis results in sin(2) 2 theta (l tau) < 1.5 x 10(-2) at large Deltam(2) and Deltam(2) < 5.9 eV(2)/c (4) at sin(2) 2 theta (l tau) = 1. We also derive limits on effective coupl ings of the tau lepton to nu (mu) or nu (l). (C) 2001 Elsevier Science B.V. All rights reserved.