Nuclear dependence of charm production by a 340-GeV pi- beam

The WA82 collaboration Adamovich, M. ; Alexandrov, Yu. ; Antinori, F. ; et al.
Phys.Lett.B 284 (1992) 453-456, 1992.
Inspire Record 334932 DOI 10.17182/hepdata.48417

Charmed mesons, produced on silicon, copper and tungsten by 340 GeV π - , have been identified as peaks in invariant mass distributions. The comparison of the yields of charmed particles originating from interactions in Si, Cu and W allows the mass number dependence of the charm hadroproduction cross section to be measured. Assuming the usual parametrization σ c = σ 0 A α , we find α =0.92±0.06 for charmed mesons with 〈 x F 〉=0.24. We do not find any decrease of α with increasing x F in contrast to the case of the production of particles containing only light quarks.

1 data table

SI, CU, and WT are used. The cross section is parametrized as : SIG = CONST*A**POWER.