Estimate of a Chiral-Odd Contribution to Single Transverse-Spin Asymmetry in Hadronic Pion Production
نویسندگان
چکیده
We present an estimate of a chiral-odd contribution to the single transverse spin asymmetry in the large-pT 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. PACS numbers: 12.38.-t, 12.38.Bx, 13.85.Ni, 13.88.+e [
منابع مشابه
Chiral-Odd Contribution to Single-Transverse Spin Asymmetry in Hadronic Pion Production
A formula for the single transverse spin asymmetry in the large-pT pion production in the nucleon-nucleon collision is derived. We focuss on the chiral-odd contribution where the transversity distribution and the chiral-odd spin-independent twist-3 distribution contributes. This contribution is expected to give rise to a large effect at xF → −1. PACS numbers: 12.38.-t, 12.38.Bx, 13.85.Ni, 13.88...
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