Search for superfragments and measurement of the production of hyperfragments in neutrino-nucleus interactions

Onengut, G.; Dantzig, R. v.; Jong, M. d.; R. G. C.,; Guler, M.; Kose, U.; Tolun, P.; Catanesi, M. G.; Muciaccia, M. T.; Winter, K.; B. V., De; Vilain, P.; Wilquet, G.; Saitta, B.; Capua, E. D.; Ogawa, S.; Shibuya, H.; Hristova, I. R.; Kayis Topaksu, A.; Kawamura, T.; Kolev, D.; Meinhard, H.; Panman, J.; Rozanov, A.; Tsenov, R.; J. W. E.,; Zucchelli, P.; Goldberg, J.; Chikawa, M.; Song, J. S.; Yoon, C. S.; Kodama, K.; Ushida, N.; Aoki, S.; Hara, T.; Delbar, T.; Favart, D.; Gregoire, G.; Kalinin, S.; Makhlioueva, I.; Artamonov, A.; Gorbunov, P.; Khovansky, V.; Shamanov, V.; Tsukerman, I.; Bruski, N.; Frekers, D.; Hoshino, K.; Kawada, J.; Komatsu, M.; Miyanishi, M.; Nakamura, M.; Nakano, T.; Narita, K.; Niu, K.; Niwa, K.; Nonaka, N.; Sato, O.; Toshito, T.; Buontempo, S.; Cocco, A. G.; D'Ambrosio, N.; DE LELLIS, Giovanni; DE ROSA, Gianfranca; DI CAPUA, Francesco; Fiorillo, Giuliana; Marotta, A.; Messina, M.; Migliozzi, P.; Lavina, L. S.; Strolin, P.; Tioukov, V.; Okusawa, T.; Dore, U.; Loverre, P. F.; Ludovici, L.; Rosa, G.; Santacesaria, R.; Satta, A.; Spada, F. R.; Barbuto, E.; Bozza, C.; Grella, G.; Romano, G.; Sirignano, C.; Sorrentino, S.; Sato, Y.; Tezuka, I.

doi:10.1016/j.nuclphysb.2005.04.029

A systematic search for superfragments (charmed nuclei) has been performed in 22 200 neutrinoemulsion interactions obtained with the CHORUS experiment making use of automatic off-line image analysis. The absence of candidates provides an upper limit for the superfragment production rate of 1.9 x 10(-4) (90% C.L.) relative to neutrino charged-current interactions at an average neutrino energy of 27 GeV. In the same analysis 28 hyperfragment decays were found. For the first time, a production rate of hyperfragments in neutrino-emulsion interactions was obtained. The value of the hyperfragment production rate relative to the neutrino charged-current cross-section was found to be (2.0 +/- 0.4(stat) +/- 0.3 (syst)) x 10(-3). (c) 2005 Elsevier B.V. All rights reserved.

Search for superfragments and measurement of the production of hyperfragments in neutrino-nucleus interactions / G., Onengut; R. v., Dantzig; M. d., Jong; R. G., C.; M., Guler; U., Kose; P., Tolun; M. G., Catanesi; M. T., Muciaccia; K., Winter; B. V., De; P., Vilain; G., Wilquet; B., Saitta; E. D., Capua; S., Ogawa; H., Shibuya; I. R., Hristova; A., Kayis Topaksu; T., Kawamura; D., Kolev; H., Meinhard; J., Panman; A., Rozanov; R., Tsenov; J. W., E.; P., Zucchelli; J., Goldberg; M., Chikawa; J. S., Song; C. S., Yoon; K., Kodama; N., Ushida; S., Aoki; T., Hara; T., Delbar; D., Favart; G., Gregoire; S., Kalinin; I., Makhlioueva; A., Artamonov; P., Gorbunov; V., Khovansky; V., Shamanov; I., Tsukerman; N., Bruski; D., Frekers; K., Hoshino; J., Kawada; M., Komatsu; M., Miyanishi; M., Nakamura; T., Nakano; K., Narita; K., Niu; K., Niwa; N., Nonaka; O., Sato; T., Toshito; S., Buontempo; A. G., Cocco; N., D'Ambrosio; DE LELLIS, Giovanni; DE ROSA, Gianfranca; DI CAPUA, Francesco; Fiorillo, Giuliana; A., Marotta; M., Messina; P., Migliozzi; L. S., Lavina; P., Strolin; V., Tioukov; T., Okusawa; U., Dore; P. F., Loverre; L., Ludovici; G., Rosa; R., Santacesaria; A., Satta; F. R., Spada; E., Barbuto; C., Bozza; G., Grella; G., Romano; C., Sirignano; S., Sorrentino; Y., Sato; I., Tezuka. - In: NUCLEAR PHYSICS. B. - ISSN 0550-3213. - STAMPA. - 718:1-2(2005), pp. 35-54. [10.1016/j.nuclphysb.2005.04.029]