Semiclassical mechanism for single-spin asymmetry in π^0-production

Details Semiclassical mechanism for single-spin asymmetry in π^0-production Semiclassical mechanism for single-spin asymmetry in π^0-production

2006-04-03

arxiv.org/abs/hep-ph/0604013v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 4 figures, extended discussion, references added

Scientific paper

The chiral quark model combined with unitarity and impact parameter picture provides simple semiclassical mechanism for generation of the single-spin asymmetry $A_N$ in the $\pi^0$-production in the polarized proton collisions at RHIC. We derive its linear $x_F$-dependence in polarized proton fragmentation region along with the energy and transverse momentum independence at large $p_T$ values.

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