Next-to-Leading order QCD corrections to charged current charm production and the unpolarized and polarized strange sea at HERA

1999 ◽  
Vol 10 (1) ◽  
pp. 107 ◽  
Author(s):  
S. Kretzer ◽  
M. Stratmann
Keyword(s):  
Charm Production ◽  
Charged Current ◽  
Leading Order

scholarly journals Charged current Drell-Yan production at N3LO

2020 ◽  
Vol 2020 (11) ◽  
Author(s):  
Claude Duhr ◽  
Falko Dulat ◽  
Bernhard Mistlberger
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Production Cross Section ◽  
Production Cross ◽  
Hadron Collider ◽  
Charge Asymmetry ◽  
Charged Current ◽  
Leading Order ◽  
Neutrino Pair ◽  
The Impact

Abstract We present the production cross section for a lepton-neutrino pair at the Large Hadron Collider computed at next-to-next-to-next-to-leading order (N3LO) in QCD perturbation theory. We compute the partonic coefficient functions of a virtual W± boson at this order. We then use these analytic functions to study the progression of the perturbative series in different observables. In particular, we investigate the impact of the newly obtained corrections on the inclusive production cross section of W± bosons, as well as on the ratios of the production cross sections for W+, W− and/or a virtual photon. Finally, we present N3LO predictions for the charge asymmetry at the LHC.

scholarly journals Determination of the strange quark content of the nucleon from a next-to-leading-order QCD analysis of neutrino charm production

1995 ◽  
Vol 65 (2) ◽  
pp. 189-198 ◽  
Author(s):  
◽  
A. O. Bazarko ◽  
C. G. Arroyo ◽  
K. T. Bachmann ◽  
T. Bolton ◽  
...  
Keyword(s):  
Strange Quark ◽  
Charm Production ◽  
Leading Order ◽  
Qcd Analysis ◽  
Quark Content

scholarly journals Probing the strange content of the proton with charm production in charged current at LHeC

2019 ◽  
Vol 79 (10) ◽  
Author(s):  
Hamed Abdolmaleki ◽  
◽  
Valerio Bertone ◽  
Daniel Britzger ◽  
Stefano Camarda ◽  
...  
Keyword(s):  
Distribution Function ◽  
Strange Quark ◽  
Parton Distribution Function ◽  
Charm Production ◽  
Charged Current ◽  
Kinematic Range ◽  
Multi Scale ◽  
Potential Improvement ◽  
The Impact

Abstract We study charm production in charged-current deep-inelastic scattering (DIS) using the xFitter framework. Recent results from the LHC have focused renewed attention on the determination of the strange-quark parton distribution function (PDF), and the DIS charm process provides important complementary constraints on this quantity. We examine the current PDF uncertainty and use LHeC pseudodata to estimate the potential improvement from this proposed facility. As xFitter implements both fixed-flavor- and variable-flavor-number schemes, we can compare the impact of these different theoretical choices; this highlights some interesting aspects of multi-scale calculations. We find that the high-statistics LHeC data covering a wide kinematic range could substantially reduce the strange PDF uncertainty.

scholarly journals Intrinsic charm in the nucleon and charm production at large rapidities in collinear, hybrid and kT-factorization approaches

2020 ◽  
Vol 2020 (10) ◽  
Author(s):  
Rafał Maciuła ◽  
Antoni Szczurek
Keyword(s):  
Transverse Momentum ◽  
High Energy ◽  
Charm Production ◽  
Leading Order ◽  
Collinear Factorization ◽  
Factorization Approach ◽  
High Energies ◽  
Neutrino Production ◽  
Intrinsic Charm ◽  
Gluon Distributions

Abstract We discuss the role of intrinsic charm (IC) in the nucleon for forward production of c-quark (or $$ \overline{c} $$ c ¯ -antiquark) in proton-proton collisions for low and high energies. The calculations are performed in collinear-factorization approach with on-shell partons, kT-factorization approach with off-shell partons as well as in a hybrid approach using collinear charm distributions and unintegrated (transverse momentum dependent) gluon distributions. For the collinear-factorization approach we use matrix elements for both massless and massive charm quarks/antiquarks. The distributions in rapidity and transverse momentum of charm quark/antiquark are shown for a few different models of IC. Forward charm production is dominated by gc-fusion processes. The IC contribution dominates over the standard pQCD (extrinsic) gg-fusion mechanism of $$ c\overline{c} $$ c c ¯ -pair production at large rapidities or Feynman-xF. We perform similar calculations within leading-order and next-to-leading order kT-factorization approach. The kT-factorization approach leads to much larger cross sections than the LO collinear approach. At high energies and large rapidities of c-quark or $$ \overline{c} $$ c ¯ -antiquark one tests gluon distributions at extremely small x. The IC contribution has important consequences for high-energy neutrino production in the Ice-Cube experiment and can be, to some extent, tested at the LHC by the SHIP and FASER experiments by studies of the ντ neutrino production.

scholarly journals Measurement of charm production in antineutrino charged-current interactions

2004 ◽  
Vol 604 (1-2) ◽  
pp. 11-21 ◽  
Author(s):  
G. Önengüt ◽  
R. van Dantzig ◽  
M. de Jong ◽  
O. Melzer ◽  
R.G.C. Oldeman ◽  
...  
Keyword(s):  
Charm Production ◽  
Charged Current

scholarly journals The strange sea density and charm production in deep inelastic charged current processes

1996 ◽  
Vol 380 (1-2) ◽  
pp. 171-176 ◽  
Author(s):  
M. Glück ◽  
S. Kretzer ◽  
E. Reya
Keyword(s):  
Charm Production ◽  
Charged Current
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