Heavy-flavor effects in soft gluon resummation for electroweak boson production at hadron colliders

Journal Article · Sun Jan 01 04:00:00 UTC 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.73.013002· OSTI ID:20774575

Berge, Stefan; Olness, Fredrick I ^[1]; Nadolsky, Pavel M ^[2]

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1. Department of Physics, Southern Methodist University, Dallas, Texas 75275-0175 (United States)
2. High Energy Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4815 (United States)

We evaluate the impact of heavy-quark masses on transverse momentum (q{sub T}) distributions of W, Z, and supersymmetric neutral Higgs bosons at the Tevatron and LHC. The masses of charm and bottom quarks act as non-negligible momentum scales at small q{sub T} and affect resummation of soft and collinear radiation. We point out inconsistencies in the treatment of heavy-flavor channels at small q{sub T} in massless and fixed-flavor number factorization schemes, and formulate small-q{sub T} resummation in a general-mass variable flavor number factorization scheme. The improved treatment of the quark-mass dependence leads to non-negligible effects in precision measurements of the W boson mass at the LHC and may cause observable modifications in production of Higgs bosons and other particles in heavy-quark scattering.

• OSTI ID: 20774575
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 1 Vol. 73; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCURACY
B QUARKS
C QUARKS
CERN LHC
DISTRIBUTION
FACTORIZATION
FERMILAB TEVATRON
FLAVOR MODEL
GLUONS
HIGGS BOSONS
INCLUSIVE INTERACTIONS
PARTICLE PRODUCTION
PROTON-PROTON INTERACTIONS
REST MASS
SCATTERING
SPARTICLES
SUPERSYMMETRY
T QUARKS
TRANSVERSE MOMENTUM
W MINUS BOSONS
W PLUS BOSONS