Soft Rescattering in DIS: Effects of Helicity Flip

Details Soft Rescattering in DIS: Effects of Helicity Flip Soft Rescattering in DIS: Effects of Helicity Flip

2005-09-07

arxiv.org/abs/hep-ph/0509058v2

JHEP0510:080,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 1 figure. v2: reference added

Scientific paper

10.1088/1126-6708/2005/10/080

Soft rescattering in hard QCD processes may involve non-perturbative, chiral symmetry breaking interactions. We find that rescattering which changes the helicity of the struck quark gives rise to a leading twist single spin asymmetry in semi-inclusive DIS, the angular dependence of which is the same as that usually ascribed to the Collins effect. We argue that helicity-changing rescattering can contribute also to $k_\perp$-integrated parton distributions.

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