Eur. Phys. J. C (2007) 49: 389-391
https://doi.org/10.1140/epjc/s10052-006-0117-2

Regular Article – Experimental Physics

Measurement of single muon yields from charm semileptonic decay at  =200 GeV Au + Au collisions at STAR

Shanghai Institute of Applied Physics, CAS, Shanghai, 201800, P.R. China

^* e-mail: czhong@bnl.gov

Received: 15 August 2006
Published online: 28 November 2006

Abstract

We report on the first measurement of single muon from charm semileptonic decays at low transverse momentum (p_T) in  =200 GeV Au+Au collisions. Muon identification was obtained using the STAR time projection chamber in conjunction with a time-of-flight detector. The p_T spectra of electron and muon from charm semileptonic decays are presented. The measured D→μ+X at p_T<0.25 GeV/c greatly constrains the charm total cross section. The charm differential cross section dσ_cc/dy is found to be consistent with the number of binary collision scaling.