CERN Accelerating science

Article
Report number arXiv:0708.2820 ; CERN-PH-EP-2007-031 ; CERN-PH-EP-2007-031
Title Associated Charm Production in Neutrino-Nucleus Interactions
Author(s)

Kayis-Topaksu, A. (Cukurova U.) ; Onengut, G. (Cukurova U.) ; van Dantzig, R. (NIKHEF, Amsterdam) ; de Jong, M. (NIKHEF, Amsterdam) ; Oldeman, R.G.C. (NIKHEF, Amsterdam) ; Guler, M. (Middle East Tech. U., Ankara) ; Kose, U. (Middle East Tech. U., Ankara) ; Tolun, P. (Middle East Tech. U., Ankara) ; Catanesi, M.G. (Bari U. ; INFN, Bari) ; Muciaccia, M.T. (Bari U. ; INFN, Bari) ; Winter, K. (Humboldt U., Berlin) ; Van de Vyver, B. (Brussels U., IIHE) ; Vilain, P. (Brussels U., IIHE) ; Wilquet, G. (Brussels U., IIHE) ; Saitta, B. (Cagliari U. ; INFN, Cagliari) ; Ogawa, S. (Toho U.) ; Shibuya, H. (Toho U.) ; Hristova, I.R. (CERN) ; Kawamura, T. (CERN) ; Kolev, D. (CERN) ; Meinhard, H. (CERN) ; Panman, J. (CERN) ; Rozanov, A. (CERN) ; Tsenov, R. (CERN) ; Uiterwijk, J.W.E. (CERN) ; Zucchelli, P. (CERN) ; Goldberg, J. (Technion) ; Chikawa, M. (Kinki U., Osaka) ; Song, J.S. (Gyeongsang Natl. U.) ; Yoon, C.S. (Gyeongsang Natl. U.) ; Kodama, K. (Aichi U. of Education) ; Ushida, N. (Aichi U. of Education) ; Aoki, S. (Kobe U.) ; Hara, T. (Kobe U.) ; Delbar, T. (Louvain U.) ; Favart, D. (Louvain U.) ; Gregoire, G. (Louvain U.) ; Kalinin, S. (Louvain U.) ; Makhlioueva, I. (Louvain U.) ; Artamonov, A. (Moscow, ITEP) ; Gorbunov, P. (Moscow, ITEP) ; Khovansky, V. (Moscow, ITEP) ; Shamanov, V. (Moscow, ITEP) ; Tsukerman, I. (Moscow, ITEP) ; Bruski, N. (Munster U.) ; Frekers, D. (Munster U.) ; Hoshino, K. (Nagoya U.) ; Kawada, J. (Nagoya U.) ; Komatsu, M. (Nagoya U.) ; Miyanishi, M. (Nagoya U.) ; Nakamura, M. (Nagoya U.) ; Nakano, T. (Nagoya U.) ; Narita, K. (Nagoya U.) ; Niu, K. (Nagoya U.) ; Niwa, K. (Nagoya U.) ; Nonaka, N. (Nagoya U.) ; Sato, O. (Nagoya U.) ; Toshito, T. (Nagoya U.) ; Buontempo, S. (Naples U. ; INFN, Naples) ; Cocco, A.G. (Naples U. ; INFN, Naples) ; D'Ambrosio, N. (Naples U. ; INFN, Naples) ; De Lellis, G. (Naples U. ; INFN, Naples) ; De Rosa, G. (Naples U. ; INFN, Naples) ; Di Capua, F. (Naples U. ; INFN, Naples) ; Fiorillo, G. (Naples U. ; INFN, Naples) ; Marotta, A. (Naples U. ; INFN, Naples) ; Migliozzi, P. (Naples U. ; INFN, Naples) ; Scotto Lavina, L. (Naples U. ; INFN, Naples) ; Strolin, Paolo Emilio (Naples U. ; INFN, Naples) ; Tioukov, V. (Naples U. ; INFN, Naples) ; Okusawa, T. (Osaka City U.) ; Dore, U. (Rome U. ; INFN, Rome) ; Loverre, P.F. (Rome U. ; INFN, Rome) ; Ludovici, L. (Rome U. ; INFN, Rome) ; Rosa, G. (Rome U. ; INFN, Rome) ; Santacesaria, R. (Rome U. ; INFN, Rome) ; Satta, A. (Rome U. ; INFN, Rome) ; Spada, F.R. (Rome U. ; INFN, Rome) ; Barbuto, E. (Salerno U. ; INFN, Salerno) ; Bozza, C. (Salerno U. ; INFN, Salerno) ; Grella, G. (Salerno U. ; INFN, Salerno) ; Romano, G. (Salerno U. ; INFN, Salerno) ; Sirignano, C. (Salerno U. ; INFN, Salerno) ; Sorrentino, S. (Salerno U. ; INFN, Salerno) ; Sato, Y. (Utsunomiya U.) ; Tezuka, I. (Utsunomiya U.)

Affiliation (Cukurova University, Adana, Turkey) ; (NIKHEF, Amsterdam, The Netherlands) ; (METU, Ankara, Turkey) ; (Universita di Bari and INFN, Bari, Italy) ; (Humboldt U., Berlin) ; (Inter-University Institute for High Energies (ULB-VUB) Brussels, Belgium) ; (Universita di Cagliari and INFN, Cagliari, Italy) ; (Universita di Ferrara and INFN, Ferrara, Italy) ; (Toho University, Funabashi, Japan) ; (Technion Haifa Israel) ; (Kinki University, Higashiosaka, Japan) ; (Gyeongsang National University Jinju Korea) ; (Aichi University of Education, Kariya, Japan) ; (Kobe University, Kobe, Japan) ; (Universite Catholique de Louvain, Louvain-la-Neuve, Belgium) ; (Institute for Theoretical and Experimental Physics Moscow, Russian Federation) ; (Westfalische Wilhelms-Universit Munster, Germany) ; (Nagoya University, Nagoya, Japan) ; (Universita Federico and INFN, Naples, Italy) ; (Osaka City University, Osaka, Japan) ; (Universita La Sapienza and INFN, Rome, Italy) ; (Universita di Salerno and INFN, Salerno, Italy) ; (Utsunomiya University, Utsunomiya, Japan)
Publication 2007
Imprint 21 Aug 2007
Number of pages 14
Note 10 pages, 4 figures
In: Eur. Phys. J. C 52 (2007) 543-552
DOI 10.1140/epjc/s10052-007-0410-8
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN SPS ; CHORUS WA95
Abstract In this paper a search for associated charm production both in neutral and charged current $\nu$-nucleus interactions is presented. The improvement of automatic scanning systems in the {CHORUS} experiment allows an efficient search to be performed in emulsion for short-lived particles. Hence a search for rare processes, like the associated charm production, becomes possible through the observation of the double charm-decay topology with a very low background. About 130,000 $\nu$ interactions located in the emulsion target have been analysed. Three events with two charm decays have been observed in the neutral-current sample with an estimated background of 0.18$\pm$0.05. The relative rate of the associated charm cross-section in deep inelastic $\nu$ interactions, $\sigma(c\bar{c}\nu)/\sigma_\mathrm{NC}^\mathrm{DIS}= (3.62^{+2.95}_{-2.42}({stat})\pm 0.54({syst}))\times 10^{-3}$ has been measured. One event with two charm decays has been observed in charged-current $\nu_\mu$ interactions with an estimated background of 0.18$\pm$0.06 and the upper limit on associated charm production in charged-current interactions at 90% C.L. has been found to be $\sigma (c\bar{c} \mu^-)/\sigma_\mathrm{CC} < 9.69 \times 10^{-4}$.



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 記錄創建於2007-08-22,最後更新在2024-10-27


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