Search for Superfragments and Measurement of the Production of Hyperfragments in Neutrino-Nucleus Interactions

A systematic search for superfragments (charmed nuclei) has been performed in 22 200 neutrinoâ€"emulsion 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...

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Detalles Bibliográficos
Autores principales: Onengüt, G, Van Dantzig, R, De Jong, M, Oldeman, R G C, Güler, M, Köse, U, Tolun, P, Catanesi, M G, Muciaccia, M T, Winter, Klaus, Van de Vyver, B, Vilain, P, Wilquet, G, Saitta, B, Di Capua, E, Ogawa, S, Shibuya, H, Goldberg, J, Hristova, I R, Kawamura, T, Kolev, D, Kayis-Topaksu, A, Meinhard, H, Panman, J, Rozanov, A, Tsenov, R V, Zucchelli, P, Uiterwijk, J W E, Chikawa, M, Song, J S, Yoon, C S, Kodama, K, Ushida, N, Hara, T, Aoki, S, Delbar, T, Favart, D, Grégoire, G, Kalinin, S, Makhlyoueva, I V, Bruski, N, Frekers, D, Tsukerman, I, Shamanov, V V, Khovanskii, V D, Gorbunov, P, Artamonov, A V, Sato, Y, Tezuka, I, Barbuto, E, Bozza, C, Grella, G, Romano, G, Sirignano, C, Sorrentino, S, Dore, U, Loverre, P F, Ludovici, L, Rosa, G, Santacesaria, R, Satta, A, Spada, F R, Okusawa, T, 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, G, De Rosa, G, Di Capua, F, Fiorillo, G, Marotta, A, Messina, M, Migliozzi, P, Scotto-Lavina, L, Strolin, P, Tioukov, V
Lenguaje:eng
Publicado: 2005
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/j.nuclphysb.2005.04.029
http://cds.cern.ch/record/836633
Descripción
Sumario:A systematic search for superfragments (charmed nuclei) has been performed in 22 200 neutrinoâ€"emulsion 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 _ 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 neutrinoâ€"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)) _ 10_3.

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