Soft-gluon resummation for heavy quark production in charged-current Deep Inelastic Scattering

Corcella, Gennaro; Mitov, Alexander

doi:10.1016/j.nuclphysb.2003.10.027

Cited by 23 publications

(36 citation statements)

References 30 publications

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“…The function B, on the other hand, is related to collinear emission from the final state current jet. In the case of heavy quarks, the function B s needs to be replaced by a different function, called S s in [38], which is instead characteristic of processes with massive quarks, and includes effects of large-angle soft radiation. Turning to our fit, we observe that, upon taking Mellin moments, the convolution in Eq.…”

Section: A Simple Parton Fitmentioning

confidence: 99%

Soft-gluon resummation effects on parton distributions

Corcella

Magnea

2005

Phys. Rev. D

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We gauge the impact of soft-gluon resummation on quark distributions by performing a simple fit of deep inelastic scattering structure function data using next-to-leading order (NLO) and next-to-leadinglogarithmic-(NLL)-resummed coefficient functions. We make use of NuTeV charged-current data, as well as New Muon Collaboration (NMC) and Bologna-CERN-Dubna-Munich-Saclay (BCDMS) neutralcurrent results, which probe large values of x. Our results suggest that the inclusion of resummation effects in global fits of parton distributions is both feasible and desirable, in order to achieve at large x the accuracy goals of the LHC physics program.

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Section: A Simple Parton Fitmentioning

confidence: 99%

Soft-gluon resummation effects on parton distributions

Corcella

Magnea

2005

Phys. Rev. D

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“…they grow much more strongly than the MS threshold logarithms α n s (ln N ) 2n−1 in the pole mass coefficient function C(N ; [23,24]. This spoils the perturbative expansion at large N , i.e.…”

Section: Inclusive Charm Productionmentioning

confidence: 99%

Charm production: Pole mass or running mass?

Ball¹

2017

AIP Conference Proceedings

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“…The pair-production of charm-quarks accounts for a considerable part of the inclusive DIS cross section measured at HERA, especially at small x, through the photon-gluon fusion process γ * g → cc X, at not too large values of Q 2 . The Wilson coefficients of the heavy-quark structure functions are known exactly to NLO since long, both for the neutral [14] and the charged current [15] case, while the NNLO results are, at present, approximate only and based on the logarithmically enhanced terms near threshold [16,17,18].…”

Section: Deep-inelastic Scatteringmentioning

confidence: 99%

Status of perturbative QCD calculations for deep-inelastic scattering and related processes

Moch¹

2012

Nuclear Physics B - Proceedings Supplements

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We give a brief overview of the status of perturbative QCD calculations for deep-inelastic scattering. The radiative corrections to the Wilson coefficients are generally available to next-to-next-to-leading order in QCD and we address the accuracy of the strong coupling constant, the parton distributions of the nucleon and the heavy quark masses which is required for precision predictions. We also discuss related processes at hadron colliders such as Higgs production via weak boson fusion which can be described through structure functions of deep-inelastic scattering, building upon an approximate, although very accurate, factorization of the perturbative QCD corrections. Keywords: Deep-inelastic scatteringDeep-inelastic scattering (DIS) and the observed scaling violations have been central to the formulation of Quantum Chromodynamics (QCD) as the gauge theory of the strong interactions [1,2]. Over the decades the available high precision experimental data from lepton-and neutrino scattering off fixed targets at CERN, FNAL and SLAC as well as from electronproton collisions at the HERA collider at DESY have successfully probed QCD in a wide kinematical range. The key observables are inclusive structure functions or differential cross sections which provide the theoretical description of the hard hadronic interactions in the QCD improved parton model. Precision predictions in perturbative QCD rest on the fact that we can separate the sensitivity to dynamics from different scales, i.e., the physics at scale of the nucleon mass from hard highenergy scattering at a large scale Q 2 . In Fig. 1 this is depicted for lepton-proton DIS in the one-boson exchange approximation, see e.g., Ref. [3] for the definitions of the kinematic variables.The factorization at a scale µ allows to express for instance the unpolarized inclusive structure functions

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Soft-gluon resummation for heavy quark production in charged-current Deep Inelastic Scattering

Cited by 23 publications

References 30 publications

Soft-gluon resummation effects on parton distributions

Soft-gluon resummation effects on parton distributions

Charm production: Pole mass or running mass?

Status of perturbative QCD calculations for deep-inelastic scattering and related processes

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