Bochum 1998 – scientific programme
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HK: Hadronen und Kerne
HK 49: Hadronic Probes V, Particle Production
HK 49.6: Group Report
Wednesday, March 18, 1998, 16:15–16:45, C
Charge Asymmetries of Charm Hadrons and Total Charm Production in Σ− - Nucleus Interactions at 340 GeV/c [1] — •O. Thilmann — Physikalisches Institut der Universit"at Heidelberg, Philosophenweg 12, 69120 Heidelberg
The experiment WA89 has studied charmed particle production in Σ−
- nucleus collisions at 340 GeV/c. Production of particles which
have light quarks in common with the beam (D−, Ds−, Λc)
are compared to production of those which have not
(D+, Ds+, Λ_c). Considerable production
asymmetries between the charge conjugate pairs have been observed.
The xf distributions will be compared with pion beam data and
with theoretical predictions.
In addition, the total charm/anticharm cross section was determined
in the range xf > 0. The results will be compared to cross
sections measured in proton - nucleus collisions.
[1] supported by BMBF under Nr.05 5HD15I, 06 HD524I und 06 MZ5265