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arXiv · 1502.03180

Higher twist effects in $e^+e^-$ annihilation at high energies

Shu-yi Wei
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Abstract

In the two papers published recently, we apply collinear expansion to both inclusive ($e^+ e^- \to h+X$) and semi-inclusive ($e^+ e^- \to h + \bar q + X$) hadron production in $e^+ e^-$ annihilation to derive a formalism suitable for a systematic study of leading as well as higher twist contributions to fragmentation functions at the tree level. We carry out the calculations for hadrons with spin-0, spin-1/2 as well as spin-1. This proceeding is mainly a summary of these two papers.

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Shu-yi Wei. 2015-02-11. Higher twist effects in $e^+e^-$ annihilation at high energies. https://doi.org/10.1142/s2010194516600600

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