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., O., R. v., D., M. d., J., R. G., C., M., G., U., K., P., T., M. G., C., M. T., M., K., W., B. V., D.e., P., V., G., W., B., S., E. D., C., S., O., H., S., I. R., H., A., K.T., T., K., et al.. - In: NUCLEAR PHYSICS. B. - ISSN 0550-3213. - STAMPA. - 718:1-2(2005), pp. 35-54. [10.1016/j.nuclphysb.2005.04.029]