Threshold resummation for hadron production in the small- x region

We study the single hadron inclusive production in the forward rapidity region in proton-nucleus collisions. We find the longstanding negative cross section at next-to-leading-order (NLO) is driven by the large negative threshold logarithmic contributions. We established a factorization theorem for...

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Bibliographic Details
Published in:Physical review. D 2020-09, Vol.102 (5), p.1, Article 051502
Main Authors: Liu, Hao-Yu, Kang, Zhong-Bo, Liu, Xiaohui
Format: Article
Language:English
Subjects:
Logarithms
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Summary:We study the single hadron inclusive production in the forward rapidity region in proton-nucleus collisions. We find the longstanding negative cross section at next-to-leading-order (NLO) is driven by the large negative threshold logarithmic contributions. We established a factorization theorem for resumming these logarithms with systematically improvable accuracy within the color glass condensate formalism. We demonstrate how the threshold leading logarithmic accuracy can be realized by a suitable scale choice in the NLO results. The NLO spectrums with the threshold logarithms resummed remain positive and impressive agreements with experimental data are observed.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.102.051502