6533b858fe1ef96bd12b62bb
RESEARCH PRODUCT
Revisiting the D-meson hadroproduction in general-mass variable flavour number scheme
Ilkka HeleniusHannu PaukkunenHannu Paukkunensubject
Nuclear and High Energy PhysicsParticle physicsFRAGMENTATION FUNCTIONSFlavourFOS: Physical sciences114 Physical sciences01 natural sciencesHigh Energy Physics - ExperimentHigh Energy Physics - Experiment (hep-ex)High Energy Physics - Phenomenology (hep-ph)HEAVY-QUARK PRODUCTION0103 physical sciencesD mesonSCATTERINGlcsh:Nuclear and particle physics. Atomic energy. RadioactivityNUCLEAR COLLISIONSLimit (mathematics)QCD ANALYSIS010306 general physicsVariable (mathematics)PhysicsLarge Hadron Colliderta114010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyContrast (statistics)Perturbative QCDQCD phenomenologyHigh Energy Physics - PhenomenologyPARTON DISTRIBUTIONSlcsh:QC770-798High Energy Physics::ExperimentLHCHADRON-COLLISIONSMATTERRealization (systems)TO-LEADING ORDERdescription
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 D$^0$-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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-05-30 |