Soft-gluon resummation for single-particle inclusive hadroproduction at high transverse momentum

S. Catani; M. Grazzini; A. Torre

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arXiv · 1305.3870

Soft-gluon resummation for single-particle inclusive hadroproduction at high transverse momentum

S. Catani·M. Grazzini·A. Torre

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Abstract

We consider the cross section for one-particle inclusive production at high transverse momentum in hadronic collisions. We present the all-order resummation formula that controls the logarithmically-enhanced perturbative QCD contributions to the partonic cross section in the threshold region, at fixed rapidity of the observed parton (hadron). The explicit resummation up to next-to-leading logarithmic accuracy is supplemented with the computation of the general structure of the near-threshold contributions to the next-to-leading order cross section. This next-to-leading order computation allows us to extract the one-loop hard-virtual amplitude that enters into the resummation formula. This is a necessary ingredient to explicitly extend the soft-gluon resummation beyond the next-to-leading logarithmic accuracy. These results equally apply to both spin-unpolarized and spin-polarized scattering processes.

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S. Catani, M. Grazzini, A. Torre. 2013-05-16. Soft-gluon resummation for single-particle inclusive hadroproduction at high transverse momentum. https://arxiv.org/abs/1305.3870

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