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Direct Photon Production in Proton-Nucleus and Nucleus-Nucleus Collisions
direct photons nuclear suppression gluon shadowing
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2011/7/21
Prompt photons produced in a hard reaction are not accompanied with any final state interaction, either energy loss or absorption. Therefore, besides the Cronin enhancement at medium transverse moment...
The nucleon's transversity and the photon's distribution amplitude probed in lepton pair photoproduction
The nucleon's transversity photon's distribution amplitude probed lepton pair photoproduction
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2011/1/5
We describe a new way to access the chiral odd transversity parton distribution in the proton
through the photoproduction of lepton pairs on transversely polarized target. The basic ingredient is the...