Measurement of charm production in neutrino charged-current interactions
Abstract
The nuclear emulsion target of the CHORUS detector was exposed to the wide-band neutrino beam of the CERN SPS of 27 GeV average neutrino energy from 1994 to 1997. In total about 100000 charged-current neutrino interactions with at least one identified muon were located in the emulsion target and fully reconstructed, using newly developed automated scanning systems. Charmed particles were searched for by a program recognizing particle decays. The observation of the decay in nuclear emulsion makes it possible to select a sample with very low background and minimal kinematical bias. 2013 charged-current interactions with a charmed hadron candidate in the final state were selected and confirmed through visual inspection. The charm production rate induced by neutrinos relative to the charged-current cross-section is measured to be sigma(nu_mu N -> mu- C X)/sigma(CC) = (5.75 +-0.32 stat +-0.30 syst)%. The charm production cross-section as a function of the neutrino energy is also obtained. The results are in good agreement with previous measurements. The charm-quark hadronization produces the following charmed hadrons with relative fractions (in %): f_Dzero = 43.7+-4.5, f_Lambda_c^plus = 19.2+-4.2, f_Dplus = 25.3+-4.2, and f_D_splus = 11.8+-4.7.
Keywords
Cite
@article{arxiv.1107.0613,
title = {Measurement of charm production in neutrino charged-current interactions},
author = {A. Kayis-Topaksu and G. Önengüt and R. van Dantzig and M. de Jong and R. G. C. Oldeman and M. Güler and U. Köse and P. Tolun and M. G. Catanesi and M. T. Muciaccia and K. Winter and B. Van de Vyver and P. Vilain and G. Wilquet and B. Saitta and E. Di Capua and S. Ogawa and H. Shibuya and I. R. Hristova and T. Kawamura and D. Kolev and H. Meinhard and J. Panman and A. Rozanov and R. Tsenov and J. W. E. Uiterwijk and P. Zucchelli and J. Goldberg and M. Chikawa and J. S. Song and C. S. Yoon and K. Kodama and N. Ushida and S. Aoki and T. Hara and T. Delbar and D. Favart and G. Grégoire and S. Kalinin and I. Makhlioueva and A. Artamonov and P. Gorbunov and V. Khovansky and V. Shamanov and I. Tsukerman and N. Bruski and D. Frekers and K. Hoshino and J. Kawada and M. Komatsu and M. Miyanishi and M. Nakamura and T. Nakano and K. Narita and K. Niu and K. Niwa and N. Nonaka and O. Sato and T. Toshito and S. Buontempo and A. G. Cocco and N. D'Ambrosio and G. De Lellis and G. De Rosa and F. Di Capua and G. Fiorillo and A. Marotta and M. Messina and P. Migliozzi and L. Scotto Lavina and P. Strolin and V. Tioukov and T. Okusawa and U. Dore and P. F. Loverre and L. Ludovici and G. Rosa and R. Santacesaria and A. Satta and F. R. Spada and E. Barbuto and C. Bozza and G. Grella and G. Romano and C. Sirignano and S. Sorrentino and Y. Sato and I. Tezuka},
journal= {arXiv preprint arXiv:1107.0613},
year = {2015}
}
Comments
16 pages, 5 figures