Twist-3 contributions in semi-inclusive DIS with transversely polarized target

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• 作者：A.P. Chen^a ; J.P. Ma^a ; ^b ; ^{majp@itp.ac.cn" class="auth_mail" title="E-mail the corresponding author} ; G.P. Zhang^b
• 刊名：Physics Letters B
• 出版年：2016
• 出版时间：10 March 2016
• 年：2016
• 卷：754
• 期：Complete
• 页码：33-38
• 全文大小：310 K

文摘

We study semi-inclusive DIS with a transversely polarized target in the approach of collinear factorization. The effects related to the transverse polarization are at twist-3. We derive the complete result of twist-3 contributions to the relevant hadronic tensor at leading order of α_s${\alpha }_s$, and construct correspondingly experimental observables. Measuring these observables will help to extract the twist-2 transversity distribution, twist-3 distributions and twist-3 fragmentation functions of the produced unpolarized hadron. A detailed comparison with the approach of transverse-momentum-dependent factorization is made.