Effects of QCD Resummation on $W^+h$ and $t\bar b$ Production at the Tevatron

Details Effects of QCD Resummation on $W^+h$ and $t\bar b$ Production at the Tevatron Effects of QCD Resummation on $W^+h$ and $t\bar b$ Production at the Tevatron

1997-03-04

arxiv.org/abs/hep-ph/9703224v1

Phys.Lett. B416 (1998) 200-207

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 12 Postscript figures, in RevTeX format, uses epsf.tex

Scientific paper

10.1016/S0370-2693(97)01303-8

The resummation of multiple soft gluon emission affects the production rate and kinematic distributions of $W^+h$ (where h is a Higgs boson) and $t \bar b$ pairs at the Tevatron with $\sqrt{s}=2$ TeV. Using the Collins-Soper-Sterman resummation formalism, the production rate is enhanced over the next-to-leading-order (NLO) prediction by 2-3% for the $W^+h$ process, for Higgs boson masses between 80-120 GeV, and over 3% for the $t\bar b$ process for $m_t=175$ GeV. After resummation, the $t\bar b$ rate changes by 12-13% when $m_t$ is varied by $\pm 5$ GeV. Various kinematic distributions are presented for the individual final state particles and for the pair. The explicit radiation of hard gluons in NLO QCD is included also for the $t\bar b$ final state.

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