2011•Communications in Theoretical PhysicsOpen access
Integrated and Unintegrated Parton Distributions
Jie Fang, Jianhong Ruan
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Abstract
We compare the twist-2 and twist-4 parton distributions both in integrated and unintegrated parton distributions. We find that when x decreases the difference between the twist-2 and twist-4 parton distributions become obvious except for the valence quark distributions. We hope the future experiments may distinguish whether the twist-4 correction is needed or not and select a reasonable unintegrated parton distribution model.
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