4,364 research outputs found

    DIS structure functions in the NLO approximation of the Parton Reggeization Approach

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    The main ideas of the NLO calculations in Parton Reggeization Approach are illustrated on the example of the simplest NLO subprocess, which contributes to DIS: γ⋆+R→q+qˉ\gamma^\star+R\to q + \bar{q}. The double counting with the LO contribution γ⋆+Q→q\gamma^\star + Q \to q is resolved. The problem of matching of the NLO results for single-scale observables in the Parton Reggeization Approach on the corresponding NLO results in the Collinear Parton Model is considered. In the developed framework, the usual NLO PDFs in the MS‾\overline{MS}-scheme can be consistently used as the collinear input for the NLO calculation in the Parton Reggeization Approach.Comment: 10 pages, 2 figures, Talk at the QFTHEP-2017, June, 2017, Yaroslavl, Russi

    Heavy quarkonium production at the LHC in the framework of NRQCD and parton Reggeization approach

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    Heavy quarkonium production in the framework of the nonrelativistic quantum chromodynamics and leading order of the parton Reggeization approach at the Tevatron and LHC Colliders is discussed. The new results, which are reviewed in this report, include the comparison with recent data on chi_{c1,c2} production from ATLAS Collaboration and special discussion of heavy quarkonium polarization issues in the considered framework.Comment: 5 pages, 2 figures. Talk at the Helmholtz International Summer School "Physics of Heavy Quarks and Hadrons", JINR, Dubna, July 15 - 28, 201
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