Charged-particle multiplicities in charged-current neutrino– and anti-neutrino–nucleus interactions |
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| Institution: | (1) ?ukurova University, Adana, Turkey;(2) NIKHEF, Amsterdam, The Netherlands;(3) Physics Department, Middle East Technical University, 06531 Ankara, Turkey;(4) Università di Bari and INFN, Bari, Italy;(5) Humboldt Universit?t, Berlin, Germany;(6) Inter-University Institute for High Energies (ULB-VUB) Brussels, Brussels, Belgium;(7) Università di Cagliari and INFN, Cagliari, Italy;(8) Università di Ferrara and INFN, Ferrara, Italy;(9) Toho University, Funabashi, Japan;(10) CERN, Geneva, Switzerland;(11) Technion, Haifa, Israel;(12) Kinki University, Higashiosaka, Japan;(13) Gyeongsang National University, Jinju, Korea;(14) Aichi University of Education, Kariya, Japan;(15) Kobe University, Kobe, Japan;(16) Université Catholique de Louvain, Louvain-la-Neuve, Belgium;(17) Institute for Theoretical and Experimental Physics, Moscow, Russian Federation;(18) Westf?lische Wilhelms-Universit?t, Münster, Germany;(19) Nagoya University, Nagoya, Japan;(20) Università Federico II and INFN, Naples, Italy;(21) Osaka City University, Osaka, Japan;(22) Università La Sapienza and INFN, Rome, Italy;(23) Università di Salerno and INFN, Salerno, Italy;(24) Utsunomiya University, Utsunomiya, Japan;(25) Università La Sapienza, Rome, Italy;(26) SpinX Technologies, Geneva, Switzerland;(27) DESY, Hamburg, Germany;(28) ?ukurova University, Adana, Turkey;(29) St. Kliment Ohridski University of Sofia, Sofia, Bulgaria;(30) CPPM CNRS-IN2P3, Marseille, France;(31) INFN, Ferrara, Italy |
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| Abstract: | The CHORUS experiment, designed to search for νμ→ντ oscillations, consists of a nuclear emulsion target and electronic detectors. In this paper, results on the production of
charged particles in a small sample of charged-current neutrino– and anti-neutrino–nucleus interactions at high energy are
presented. For each event, the emission angle and the ionization features of the charged particles produced in the interaction
are recorded, while the standard kinematic variables are reconstructed using the electronic detectors. The average multiplicities
for charged tracks, the pseudo-rapidity distributions, the dispersion in the multiplicity of charged particles and the KNO
scaling are studied in different kinematical regions. A study of quasi-elastic topologies performed for the first time in
nuclear emulsions is also reported. The results are presented in a form suitable for use in the validation of Monte Carlo
generators of neutrino–nucleus interactions. |
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