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A search for nu(mu)->nu(tau) oscillation

1998-04-01
Eskut, E
Kayis, A
Onengut, G
van Dantzig, R
de Jong, M
Konijn, J
Melzer, O
Oldeman, RGC
van der Poel, CAFJ
Uiterwijk, JWE
Visschers, JL
Ayan, AS
Pesen, E
Serin-Zeyrek, M
Sever, R
Tolun, P
Zeyrek, Mehmet Tevfik
Armenise, N
Cassol, F
Catanesi, MG
Muciaccia, MT
Radicioni, E
Simone, S
Vivolo, L
Bulte, A
Lendermann, P
Meyer-Sievers, A
Patzak, T
Winter, K
Annis, P
Gruwe, M
Mommaert, C
Vander Donckt, M
Van de Vyver, B
Vilain, P
Wilquet, G
Righini, P
Saitta, B
Di Capua, E
Luppi, C
Zucchelli, P
Ishii, Y
Kawamura, T
Kazuno, M
Ogawa, S
Shibuya, H
Beyer, R
Brunner, J
Cussans, D
Fabre, JP
Ferreira, R
Flegel, W
Gurin, R
Litmaath, M
Ludovici, L
Macina, D
Drees, RM
Meinhard, H
Migliozzi, P
Niu, E
Overas, H
Panman, J
Papadopoulos, IM
Riccardi, F
Ricciardi, S
Rozanov, A
Saltzberg, D
Santacesaria, R
Stefanini, G
Tsenov, R
Weinheimer, C
Wong, H
Goldberg, J
Hoepfner, K
Chikawa, M
Arik, E
Birol, I
Mailov, AA
Hahn, CH
Jang, HI
Park, IG
Park, MS
Song, JS
Yoon, CS
Kodama, K
Ushida, N
Aoki, S
Hara, T
Brooijmans, G
Favart, D
Gregoire, G
Herin, J
Lemaitre, V
Artamonov, A
Gorbunov, P
Khovansky, V
Shamanov, V
Smirnitsky, V
Bonekamper, D
Frekers, D
Rondeshagen, D
Wolff, T
Hoshino, K
Kobayashi, M
Kotaka, Y
Kozaki, T
Miyanishi, M
Nakamura, M
Nakazawa, K
Nakano, T
Niu, K
Niwa, K
Obayashi, Y
Sato, O
Toshito, T
Buontempo, S
Cocco, A
D'Ambrosio, N
De Lellis, G
Ereditato, A
Fiorillo, G
Garufi, F
Marchetti-Stasi, F
Messina, M
Palladino, V
Sorrentino, S
Strolin, P
Nakamura, K
Okusawa, T
Yoshida, T
Capone, A
De Pedis, D
Di Liberto, S
Dore, U
Loverre, PF
Maslennikov, A
Mazzoni, MA
Meddi, F
Piredda, G
di Bartolomeo, A
Bozza, C
Grella, G
Iovane, G
Romano, G
Rosa, G
Sato, Y
Tezuka, I
CHORUS is an experiment searching for nu(mu) --> nu(tau) oscillation in the CERN wide band neutrino beam with a hybrid setup consisting of a nuclear emulsion target followed by electronic detectors. The experiment has been taking data from 1994 through 1997. A subset of the neutrino interactions collected in 1994 and 1995 have been analyzed, looking for nu(tau) charged current interactions where the tau lepton decays to mu(mu)nu(tau). In a sample of 31,423 nu(mu) charged current interactions, no nu(tau) candidates were found. For large Delta m(mu tau)(2) values, a limit on the mixing angle of sin(2)2 theta(mu tau) < 3.5 x 10(-3) at 90% C.L. can be set, thus improving the previous best result. (C) 1998 Elsevier Science B.V.