Leading and higher twist contributions in semi-inclusive e+e annihilation at high energies

Shu-yi Wei, Kai-bao Chen, Yu-kun Song, and Zuo-tang Liang
Phys. Rev. D 91, 034015 – Published 17 February 2015

Abstract

By applying the collinear expansion to the semi-inclusive hadron production process e++eh+q¯(jet)+X at high energies, we construct a theoretical framework where leading and higher twist contributions at the leading perturbative QCD can be calculated systematically. With this framework, we calculate the contributions up to twist-3 for spin-0, spin-1/2, and spin-1 hadrons, respectively. We present the results for the hadronic tensors, the differential cross sections, the azimuthal asymmetries, and the polarizations of the hadrons.

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  • Received 3 November 2014

DOI:https://doi.org/10.1103/PhysRevD.91.034015

© 2015 American Physical Society

Authors & Affiliations

Shu-yi Wei1, Kai-bao Chen1, Yu-kun Song2, and Zuo-tang Liang1,3

  • 1School of Physics & Key Laboratory of Particle Physics and Particle Irradiation (MOE), Shandong University, Jinan, Shandong 250100, China
  • 2School of Physics and Technology, University of Jinan, Jinan, Shandong 250022, China
  • 3CAS Center for Excellence in Particle Physics, Box 918, Beijing 10094, China

See Also

Higher-twist contribution to fragmentation function in inclusive hadron production in e+e annihilation

Shu-yi Wei, Yu-kun Song, and Zuo-tang Liang
Phys. Rev. D 89, 014024 (2014)

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Vol. 91, Iss. 3 — 1 February 2015

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