Journal
PHYSICAL REVIEW D
Volume 88, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.88.054010
Keywords
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Funding
- U.S. Department of Energy, Office of Science
- LDRD program at LANL
- NSFC of China [10825523]
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We study the multiple scattering effects on inclusive particle production in p + A and gamma + A collisions. Specifically, we concentrate on the region where the parton momentum fraction in the nucleus x similar to O(1) and incoherent multiple interactions are relevant. By taking into account both initial-state and final-state double scattering, we derive the nuclear size-enhanced power corrections to the differential cross section for single inclusive hadron production in p + A and gamma + A reactions, and for prompt photon production in p + A reactions. We find that the final result can be written in a simple compact form in terms of four-parton correlation functions, in which the second-derivative, first-derivative and nonderivative terms of the correlation distributions share the same hard-scattering functions. We expect our result to be especially relevant for understanding the nuclear modification of particle production in the backward rapidity regions in p + A and e + A collisions.
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