Περίληψη:
The DONuT experiment collected data in 1997 and published first results in 2000 based on four observed ντ charged-current (CC) interactions. The final analysis of the data collected in the experiment is presented in this paper, based on 3.6×1017 protons on target using the 800 GeV Tevatron beam at Fermilab. The number of observed ντ CC events is 9 with an estimated background of 1.5 events, from a total of 578 observed neutrino interactions. We calculate the ντ CC cross section as a function of one parameter. Assuming Ds mesons are the sole source for ντ, the energy-independent part of the total CC cross section can be parametrized as σconst(ντ )=2.51n1.52×10-40cm2GeV-1 for n 4, where n is the parameter controlling the longitudinal part of the Ds differential cross section of the form dσ/dxF (1-|xF|)n. The analysis could not distinguish between ντ and ν̄τ. The value of n obtained from Pythia simulations, n=6.1, gives an estimated value of σconst(ντ)=(0.39±0.13±0.13) ×10-38cm2GeV-1. © 2008 The American Physical Society.
Συγγραφείς:
Kodama, K.
Ushida, N.
Andreopoulos, C.
Saoulidou, N.
Tzanakos, G.
Yager, P.
Baller, B.
Boehnlein, D.
Freeman, W.
Lundberg, B.
Morfin, J.
Rameika, R.
Chung, S.H.
Song, J.S.
Yoon, C.S.
Berghaus, P.
Kubantsev, M.
Reay, N.W.
Sidwell, R.
Stanton, N.
Yoshida, S.
Aoki, S.
Hara, T.
Rhee, J.T.
Ciampa, D.
Erickson, C.
Graham, M.
Maher, E.
Heller, K.
Rusack, R.
Schwienhorst, R.
Sielaff, J.
Trammell, J.
Wilcox, J.
Furukawa, T.
Hoshino, K.
Jiko, H.
Komatsu, M.
Nakamura, M.
Nakano, T.
Niwa, K.
Nonaka, N.
Okada, K.
Park, B.D.
Sato, O.
Takahashi, S.
Paolone, V.
Rosenfeld, C.
Kulik, A.
Kafka, T.
Oliver, W.
Patzak, T.
Schneps, J.
