Multiple scattering effects on heavy meson production in p+A collisions at backward rapidity

Nuclear and High Energy Physics Nuclear Theory Physics QC1-999 FOS: Physical sciences 01 natural sciences High Energy Physics - Experiment Nuclear Theory (nucl-th) High Energy Physics - Phenomenology High Energy Physics - Experiment (hep-ex) High Energy Physics - Phenomenology (hep-ph) 0103 physical sciences Nuclear Experiment (nucl-ex) Nuclear Experiment
DOI: 10.1016/j.physletb.2014.11.024 Publication Date: 2014-11-21T01:56:43Z
ABSTRACT
We study the incoherent multiple scattering effects on heavy meson production in the backward rapidity region of p+A collisions within the generalized high-twist factorization formalism. We calculate explicitly the double scattering contributions to the heavy meson differential cross sections by taking into account both initial-state and final-state interactions, and find that these corrections are positive. We further evaluate the nuclear modification factor for muons that come form the semi-leptonic decays of heavy flavor mesons. Phenomenological applications in d+Au collisions at a center-of-mass energy $\sqrt{s}=200$ GeV at RHIC and in p+Pb collisions at $\sqrt{s}=5.02$ TeV at the LHC are presented. We find that incoherent multiple scattering can describe rather well the observed nuclear enhancement in the intermediate $p_T$ region for such reactions.<br/>10 pages, 6 figures, published version in PLB<br/>
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