scholarly journals Limits on intrinsic charm production from the SeaQuest experiment

2021 ◽  
Vol 103 (3) ◽  
Author(s):  
R. Vogt
Keyword(s):  
Charm Production ◽  
Intrinsic Charm

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 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

Charm production in the valon model

1983 ◽  
Vol 27 (3) ◽  
pp. 653-656 ◽  
Author(s):  
Rudolph C. Hwa
Keyword(s):  
Charm Production

scholarly journals Measurement of Single Electrons and Implications for Charm Production inAu+AuCollisions atsNN=130GeV

2002 ◽  
Vol 88 (19) ◽  
Author(s):  
K. Adcox ◽  
S. S. Adler ◽  
N. N. Ajitanand ◽  
Y. Akiba ◽  
J. Alexander ◽  
...  
Keyword(s):  
Charm Production ◽  
Single Electrons

scholarly journals Looking for intrinsic charm in the forward region at BNL RHIC and CERN LHC

2010 ◽  
Vol 842 (1-4) ◽  
pp. 59-71 ◽  
Author(s):  
V.P. Gonçalves ◽  
F.S. Navarra ◽  
T. Ullrich
Keyword(s):  
Forward Region ◽  
Intrinsic Charm
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