Observation of one event with the characteristics of associated charm production in neutrino charged-current interactions

Toshito, T.; Buontempo, S.; Cocco, A. G.; D'Ambrosio, N.; DE LELLIS, Giovanni; DE ROSA, Gianfranca; Capua, F. D.; Ereditato, A.; Fiorillo, Giuliana; Kawamura, T.; Messina, M.; Migliozzi, P.; Palladino, Vittorio; Strolin, PAOLO EMILIO; Tioukov, V.; Nakamura, K.; Okusawa, T.; Dore, U.; Loverre, P. F.; Ludovici, L.; Maslennikov, A.; Righini, P.; Rosa, G.; Santacesaria, R.; Satta, A.; Spada, F. R.; Barbuto, E.; Bozza, C.; Grella, G.; Romano, G.; Sorrentino, S.; Sato, Y.; Tezuka, I.

doi:10.1016/S0370-2693(02)02092-0

We report on a search for associated charm production in neutrino charged-current interactions in the CHORUS experiment, based on the visual observation of charmed-particle decays. The search differs from those carried out so far in which the production of c (c) over bar has been inferred from measurements of events with two or three nations in the final state, resulting from the decay of charmed hadrons. One event with a double charm-decay topology has been found and a corresponding background of 0.04 events has been evaluated. (C) 2002 Elsevier Science B.V. All rights reserved.

Observation of one event with the characteristics of associated charm production in neutrino charged-current interactions / T., Toshito; S., Buontempo; A. G., Cocco; N., D'Ambrosio; DE LELLIS, Giovanni; DE ROSA, Gianfranca; F. D., Capua; A., Ereditato; Fiorillo, Giuliana; T., Kawamura; M., Messina; P., Migliozzi; Palladino, Vittorio; Strolin, PAOLO EMILIO; V., Tioukov; K., Nakamura; T., Okusawa; U., Dore; P. F., Loverre; L., Ludovici; A., Maslennikov; P., Righini; G., Rosa; R., Santacesaria; A., Satta; F. R., Spada; E., Barbuto; C., Bozza; G., Grella; G., Romano; S., Sorrentino; Y., Sato; I., Tezuka. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 539:(2002), pp. 188-196. [10.1016/S0370-2693(02)02092-0]