Heavy-flavor effects in soft gluon resummation for electroweak boson production at hadron colliders
Sep, 2005
26 pages
Published in:
- Phys.Rev.D 73 (2006) 013002
e-Print:
- hep-ph/0509023 [hep-ph]
Report number:
- ANL-HEP-PR-05-73
View in:
Citations per year
Abstract:
We evaluate the impact of heavy-quark masses on transverse momentum 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 transverse momentum, and affect resummation of soft and collinear radiation. We point out inconsistencies in the treatment of heavy-flavor channels at small transverse momentum in massless factorization schemes, and formulate small transverse momentum 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.- 12.15.Ji
- 13.85.Qk
- 12.38.Cy
- p p: inclusive reaction
- anti-p p: inclusive reaction
- W: hadroproduction
- Z0: hadroproduction
- supersymmetry
- Higgs particle: hadroproduction
- gluon: emission
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