Pion-induced Drell-Yan processes and the flavor-dependent EMC effect

Details Pion-induced Drell-Yan processes and the flavor-dependent EMC effect Pion-induced Drell-Yan processes and the flavor-dependent EMC effect

2010-07-22

arxiv.org/abs/1007.3916v1

Phys.Rev.C83:042201,2011

Physics

Nuclear Physics

Nuclear Experiment

4 pages, 3 figures

Scientific paper

10.1103/PhysRevC.83.042201

Pion-induced Drell-Yan processes are proposed as a potential tool to measure the flavor dependence of the EMC effect, that is, the flavor-dependent modification of quark distributions in the nuclear medium. Existing pionic Drell-Yan data are compared with calculations using a recent model for nuclear quark distributions that incorporates flavor-dependent nuclear effects. While no firm conclusions can yet be drawn, we demonstrate that existing Drell-Yan data seem to imply a flavor dependence of the EMC effect. We highlight how pion-induced Drell-Yan experiments on nuclear targets can access important new aspects of the EMC effect, not probed in deep inelastic scattering, and will therefore provide very stringent constrains for models of nuclear quark distributions. Predictions for possible future pion-induced Drell-Yan experiments are also presented.

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