Threshold Resummation for Polarized High-$p_T$ Hadron Production at COMPASS

Abstract

We study the cross section for the photoproduction process $\gamma N\to hX$ where the incident photon and nucleon are longitudinally polarized and a hadron $h$ is observed at high transverse momentum. Specifically, we address the "direct" part of the cross section, for which the photon interacts in a pointlike way. For this contribution we perform an all-order resummation of logarithmic threshold corrections generated by soft or collinear gluon emission to next-to-leading logarithmic accuracy. We present phenomenological results relevant for the COMPASS experiment and compare to recent COMPASS data.

arXiv comment11 pages, 7 figures. Numerical results updated

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Cited by in corpus (4)

• Threshold and jet radius joint resummation for single-inclusive jet production
• Double-Longitudinal Spin Asymmetry in Single-Inclusive Lepton Scattering at NLO
• Direct- and Resolved-Photon Threshold Resummation for Polarized High-$p_T$ Hadron Production at COMPASS
• Longitudinal double spin asymmetries in single hadron quasi-real photoproduction at high $p_T$