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EnglishResults from the v, appearance search in a neutrino beam using the full NOMAD data sample are reported. A new analysis unifies all the hadronic tau decays, 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 Deltam(2) < 0.7 eV(2)/c(4) at sin(2) 2 theta (mu tau) = 1. The corresponding contour 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 couplings of the tau lepton to nu (mu) or nu (l). (C) 2001 Elsevier Science B.V. All rights reserved.
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| Autori: | 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 | |
| Titolo: | Final NOMAD results on nu(mu) -> nu(tau) and nu(e) -> nu(tau) oscillations including a new search for nu(tau) appearance using hadronic tau decays | |
| Anno del prodotto: | 2001 | |
| Digital Object Identifier (DOI): | 10.1016/S0550-3213(01)00339-X | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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