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arXiv · 1409.2494

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

Zhong-Bo Kang·Ivan Vitev·Enke Wang·Hongxi Xing·Cheng Zhang
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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.

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Zhong-Bo Kang, Ivan Vitev, Enke Wang, Hongxi Xing, Cheng Zhang. 2014-12-01. Multiple scattering effects on heavy meson production in p+A collisions at backward rapidity. https://doi.org/10.1016/j.physletb.2014.11.024

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