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arXiv · 1812.02156

Heavy-quark production with $k_t$-factorization: The importance of the sea-quark distribution

Benjamin Guiot
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Abstract

We discuss the fact that $k_t$-factorization calculations for heavy-quark production include only the $gg\rightarrow Q\bar{Q}$ contribution. The cases of fixed-flavor-number scheme and variable-flavor-number scheme calculations are analyzed separately. For the latter, we show that, similarly to the collinear factorization, the main contribution is given by the $Qg\rightarrow Qg$ process. In this scheme, calculations including only the $gg$ contribution should show a large discrepancy with the data. We show that, if they do not, it is because they include (effectively) a large $K$ factor.

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Benjamin Guiot. 2018-12-05. Heavy-quark production with $k_t$-factorization: The importance of the sea-quark distribution. https://doi.org/10.1103/physrevd.99.074006

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