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arXiv · 0910.4071

Higher Order Corrections to the Cross Section of e+e- to Quarkonium plus gamma

Wen-Long Sang·Yu-Qi Chen
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Abstract

The production cross sections of $e^+e^- $ to a heavy quarkonium with $C$-parity even $S-$wave and $P-$wave associated with a photon are analyzed in the framework of non-relativistic Quantum Chromodynamics(NRQCD) factorization formalism. The short-distance coefficients are determined up to the next-to-leading order(NLO) QCD radiative corrections for $S-$ and $P-$wave and NLO relativistic corrections for $S-$wave in analytical forms. Applying the results to estimate the cross sections we find that both the radiative and relativistic corrections are considerable.

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Wen-Long Sang, Yu-Qi Chen. 2009-10-21. Higher Order Corrections to the Cross Section of e+e- to Quarkonium plus gamma. https://doi.org/10.1103/physrevd.81.034028

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