Abstract
We introduce a novel realization of the open heavy-flavour hadroproduction in general-mass variable flavour number scheme at next-to-leading order in perturbative QCD. The principal novelty with respect to the earlier works is in the treatment of small-transverse-momentum limit, which has been a particularly challenging kinematic region in the past. We show that by a suitable choice of scheme, it is possible to obtain a well-behaved description of the open heavy-flavour hadroproduction cross sections from zero up to asymptotically high transverse momentum. We contrast our calculation with the available D0-meson data as measured by the LHCb and ALICE collaborations at the LHC, finding a very good agreement within the theoretical and experimental uncertainties. We also compare our framework with other theoretical approaches.
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Helenius, I., Paukkunen, H. Revisiting the D-meson hadroproduction in general-mass variable flavour number scheme. J. High Energ. Phys. 2018, 196 (2018). https://doi.org/10.1007/JHEP05(2018)196
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DOI: https://doi.org/10.1007/JHEP05(2018)196