Production asymmetry of Ds from 600 GeV/c σ- and π- beam
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2003-04-10
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Kaya, M.
Alkhazov, G.
Atamantchouk, A. G.
Balatz, M. Y.
Bondar, N. F.
Cooper, P. S.
Dauwe, L. J.
Davidenko, G. V.
Dersch, U.
Dolgolenko, A. G.
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The production of Ds- relative to Ds+ as a function of xF with 600 GeV/c Σ- beam is measured in the interval 0.15 < xF < 0.7 by the SELEX (E781) experiment at Fermilab. The integrated charge asymmetries with 600 GeV/c Σ- beam (0.53 ± 0.06) and π- beam (0.06 ± 0.11) are also compared. The results show the Σ- beam fragments play a role in the production of Ds-, as suggested by the leading quark model. © 2003 Elsevier Science B.V. All rights reserved.
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Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, v. 558, n. 1-2, p. 34-40, 2003.