Measurement of topological muonic branching ratios of charmed hadrons produced in neutrino-induced charged-current interactions

Date

2005-10-20

Author

Kayis-Topaksu, A
Onengut, G
van Dantzig, R
de Jong, M
Oldeman, RGC
Güler, Murat
Kose, U
Tolun, P
Catanesi, MG
Muciaccia, MT
Winter, K
de Vyver, BV
Vilain, P
Wilquet, G
Saitta, B
Di Capua, E
Ogawa, S
Shibuya, H
Hristova, IR
Kawamura, T
Kolev, D
Meinhard, H
Panman, J
Rozanov, A
Tsenov, R
Uiterwijk, JWE
Zucchelli, P
Goldberg, J
Chikawa, M
Song, JS
Yoon, CS
Kodama, K
Ushida, N
Aoki, S
Hara, T
Delbar, I
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, AG
D'Ambrosio, N
De Lellis, G
De Rosa, G
Di Capua, F
Fiorillo, G
Marotta, A
Messina, M
Migliozzi, P
Lavina, LS
Strolin, P
Tioukov, V
Okusawa, T
Dore, U
Loverre, PF
Ludovici, L
Rosa, G
Santacesaria, R
Satta, A
Spada, ER
Barbuto, E
Bozza, C
Grella, G
Romano, G
Sirignano, C
Sorrentino, S
Sato, Y
Tezuka, I

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From 1994 to 1997, the emulsion target of the CHORUS detector was exposed to the wideband neutrino beam of the CERN SPS. In total about 100 000 charged-current neutrino interactions were located in the nuclear emulsion target and fully reconstructed. From this sample of events based on the data acquired by new automatic scanning systems; 2013 charm-decay events were selected by a pattern recognition program. They were confirmed as decays through visual inspection. Based on these events, the effective branching ratio of charmed particles into muons was determined to be (B) over bar (mu) = [7.3 +/- 0.8(stat) +/- 0.2(syst)] x 10(-2). In addition, the muonic branching ratios are presented for dominating charm-decay topologies. Normalization of the muonic decays to charged-current interactions provides sigma(mu)-(mu)+/sigma(cc) = [3.16 +/- 0.34(stat) 0.09(syst)] x 10(-3). Selecting only events with visible energy greater than 30 GeV gives a value of (B) over bar (mu) that is less affected by the charm production threshold and quasi-elastic Delta(+)(c) production. Combining this value with the current average of B 12 of vertical bar V-cd vertical bar(LO) = 0. 236 +/- 0.016.

Subject Keywords

Chorus, Scattering, Physics, Dcd analysis, Dimuon events, Opposite-sign, Nomad experiment, Parton distributions

URI

https://hdl.handle.net/11511/32965

Collections

Department of Civil Engineering, Article