Heavy quark effects on parton distribution functions in the unpolarized virtual photon up to the next-to-leading order in QCD

Journal Article · Thu Apr 01 04:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.074029· OSTI ID:21409491

Kitadono, Yoshio; Sasaki, Ken; Ueda, Takahiro; Uematsu, Tsuneo ^[1]

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1. Department of Physics, Faculty of Science, Hiroshima University, Higashi Hiroshima 739-8526 (Japan)

We investigate the heavy-quark mass effects on the parton distribution functions in the unpolarized virtual photon up to the next-to-leading order in QCD. Our formalism is based on the QCD-improved parton model described by the Dokshitzer-Gribov-Lipatov-Altarelli-Parisi evolution equation as well as on the operator product expansion supplemented by the mass-independent renormalization group method. We evaluate the various components of the parton distributions inside the virtual photon with the massive quark effects, which are included through the initial condition for the heavy-quark distributions, or equivalently from the matrix element of the heavy-quark operators. We discuss some features of our results for the heavy-quark effects and their factorization-scheme dependence.

• OSTI ID: 21409491
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 7 Vol. 81; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B QUARKS
BEAUTY PARTICLES
BOSONS
C QUARKS
CHARM PARTICLES
DISTRIBUTION
DISTRIBUTION FUNCTIONS
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EQUATIONS
FACTORIZATION
FERMIONS
FIELD THEORIES
FUNCTIONS
MASS
MASSLESS PARTICLES
MATRIX ELEMENTS
PHOTONS
POSTULATED PARTICLES
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKS
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T QUARKS
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