Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-09-04
Phys.Rev.D73:013002,2006
Physics
High Energy Physics
High Energy Physics - Phenomenology
26 pages, 6 figures
Scientific paper
10.1103/PhysRevD.73.013002
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.
Berge Stefan
Nadolsky Pavel M.
Olness Fredrick I.
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