Partonic State and Single Transverse Spin Asymmetries in Semi Inclusive DIS

Details Partonic State and Single Transverse Spin Asymmetries in Semi Inclusive DIS Partonic State and Single Transverse Spin Asymmetries in Semi Inclusive DIS

2008-11-03

arxiv.org/abs/0811.0224v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

Add references and more discussion. Version to appear in Phys. Lett. B.

Scientific paper

Using partonic states we verify the transverse momentum dependent factorization for single transverse spin asymmetries in semi inclusive DIS at leading but nontrivial order of alpha_s. The factorization has been previously derived in a formal way by using diagram expansion at hadron level. We find with our partonic results that two relevant structure functions satisfy the factorization. Our results also satisfy the collinear factorization but with the perturbative coefficient different than that derived formally.

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