EPJ

2018 Impact factor 4.843
EPJ C - Particles and Fields
Particles and Fields
Eur. Phys. J. C 8, 593-601
DOI 10.1007/s100529900019

Charge asymmetries for D, D$_{\mathrm{s}}$ and $\Lambda_{\mathrm{c}}$ production in $\Sigma^{-}$-nucleus interactions at 340$\mathrm{ GeV/{\mit c}}$

The WA89 Collaboration
M.I. Adamovich 8 - Yu.A. Alexandrov 8 - D. Barberis 3 - M. Beck 5 - C. Bérat 4 - W. Beusch 2 - M. Boss 6 - S. Brons 5 - W. Brückner 5 - M. Buénerd 4 - C. Busch 6 - C. Büscher 5 - F. Charignon 4 - J. Chauvin 4 - E.A. Chudakov 6 - U. Dersch 5 - F. Dropmann 5 - J. Engelfried 6 - F. Faller 6 - A. Fournier 4 - S.G. Gerassimov 5 8 - M. Godbersen 5 - P. Grafström 2 - Th. Haller 5 - M. Heidrich 5 - E. Hubbard 5 - R.B. Hurst 3 - K. Königsmann 5 - I. Konorov 5 8 - N. Keller 6 - K. Martens 6 - Ph. Martin 4 - S. Masciocchi 5 - R. Michaels 5 - U. Müller 7 - H. Neeb 5 - D. Newbold 1 - C. Newsom - S. Paul 5 , J. Pochodzalla 5 - I. Potashnikova 5 - B. Povh 5 - R.D. Ransome - Z. Ren 5 - M. Rey-Campagnolle 4 - G. Rosner 7 - L. Rossi 3 - H. Rudolph 7 - C. Scheel - L. Schmitt 7 - H.-W. Siebert 6 - A. Simon 6 - V.J. Smith 1 - O. Thilmann 6 - A. Trombini 5 - E. Vesin 4 - B. Volkemer 7 - K. Vorwalter 5 - Th. Walcher 7 - G. Wälder 6 - R. Werding 5 - E. Wittmann 5 - M.V. Zavertyaev 8

1 University of Bristol, Bristol, UK
2 CERN, CH-1211 Genève 23, Switzerland
3 Genoa University/INFN, Dipt. di Fisica, I-16146 Genova, Italy
4 Grenoble ISN, F-38026 Grenoble, France
5 Heidelberg Max-Planck-Institut für Kernphysik, Postfach 103980, D-69029 Heidelberg, Germany
6 Heidelberg University, Physikal. Institut, D-69120 Heidelberg Germany
7 Mainz University, Institut für Kernphysik, D-55099 Mainz, Germany$^{\rm n}$
8 Moscow Lebedev Physics Institute, 117924 Moscow, Russia

Received: 16 September 1998 / Published online: 1 March 1999

Abstract
CERN experiment WA89 has studied charmed particles produced by a $\Sigma^{-}$ beam at 340GeV/c on nuclear targets. Production of particles which have light quarks in common with the beam is compared to production of those which do not. Considerable production asymmetries between $\mathrm{D}^-$ and $\mathrm{D}^+$,$\mathrm{D}_\mathrm{s}^-$ and $\mathrm{D}_\mathrm{s}^+$ and $\Lambda_{\mathrm{c}}$ and $\bar{\Lambda_\mathrm{c}}$are observed. The results are compared with pion beam data and with theoretical calculations.

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