Search results for "QCD EVOLUTION"

showing 1 items of 1 documents

Use of a running coupling in the NLO calculation of forward hadron production

2018

We address and solve a puzzle raised by a recent calculation [1] of the cross-section for particle production in proton-nucleus collisions to next-to-leading order: the numerical results show an un- reasonably large dependence upon the choice of a prescription for the QCD running coupling, which spoils the predictive power of the calculation. Specifically, the results obtained with a prescription formulated in the transverse coordinate space differ by one to two orders of magnitude from those obtained with a prescription in momentum space. We show that this discrepancy is an artefact of the interplay between the asymptotic freedom of QCD and the Fourier transform from coordinate space to mo…

Position and momentum spaceQCD EVOLUTION01 natural sciencesAsymptotic freedomquantum chromodynamics: correctionhard scatteringHigh Energy Physics - Phenomenology (hep-ph)coupling constant: energy dependencestrong interaction: coupling constantEQUATIONkvanttifysiikkaComputingMilieux_MISCELLANEOUSPhysicsQuantum chromodynamicsQUARKhigher-order: 1nuclear physicssddc:12.39.StHigh Energy Physics - Phenomenology12.38.Bxsymbolsydinfysiikkahadron: forward productionFOS: Physical sciences114 Physical sciencesRENORMALIZATION-GROUP12.38.Cysymbols.namesakeCross section (physics)Theoretical physicsquantum chromodynamics0103 physical sciencessirontarelativistic heavy-ion collisionCoordinate spacenumerical calculations010306 general physicsp nucleus: scatteringcorrection: higher-orderCouplingta114010308 nuclear & particles physics25.75.-qCOLOR GLASS CONDENSATENONLINEAR GLUON EVOLUTIONRenormalization groupFourier transformasymptotic freedom[PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph][ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph]Physical Review D
researchProduct