Estimate of a Chiral-Odd Contribution to Single Transverse-Spin Asymmetry in Hadronic Pion Production

Details Estimate of a Chiral-Odd Contribution to Single Transverse-Spin Asymmetry in Hadronic Pion Production Estimate of a Chiral-Odd Contribution to Single Transverse-Spin Asymmetry in Hadronic Pion Production

2000-07-25

arxiv.org/abs/hep-ph/0007272v2

Phys.Lett. B490 (2000) 99-105

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex file 8 pages + 5 figures attached as PS files. Some misprints are corrected. Phys. Lett. B in press

Scientific paper

10.1016/S0370-2693(00)00969-2

We present an estimate of a chiral-odd contribution to the single transverse-spin asymmetry in the large-$p_T$ pion production in the nucleon-nucleon collision. In this contribution the transversity distribution and the chiral-odd spin-independent twist-3 distribution appear. Because of the smallness of the corresponding hard cross section, this term turned out to be negligible in all kinematic regions compared with the chiral-even contribution.

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