Ja n 20 07 Υ cross section in p + p collisions at STAR
نویسنده
چکیده
The main focus of the heavy flavor program at RHIC is to investigate the properties of the dense matter produced in heavy-ion collisions by studying its effect on open heavy flavor and quarkonia production. This in turn requires a detailed understanding of their production in elementary p+p collisions so that the dense matter effects can be later unfolded. In this paper, we present the first mid-rapidity cross section measurement of bottomonium at √ s = 200 GeV with the STAR experiment. We compare our results with perturbative QCD calculations. A brief status on the study of charmonium in STAR is given.
منابع مشابه
Upsilon Productions at STAR
The Υ(1S + 2S + 3S) → ee cross section is measured at mid-rapidity (y) in p + p collisions and in d+Au collisions at center-of-mass energy √ s = 200 GeV with the STAR detector at RHIC. In p + p, the measured cross section is found to be consistent with the world data trend as a function of √ s, in agreement with the Color Evaportaion Model (CEM), and underestimated by the Color Singlet Model (C...
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