Gluon radiation in {ital t{bar t}} production at the Fermilab Tevatron {ital p{bar p}} collider
- Department of Physics, University of Rochester, Rochester, New York 14627-0171 (United States)
- Department of Physics, University of Durham, Durham DH1 3LE (United Kingdom)
- Departments of Physics and Mathematical Sciences, University of Durham, Durham DH1 3LE (United Kingdom)
We present a complete calculation of the matrix elements for the processes {ital q{bar q}},{ital gg}{r_arrow}{ital bW}{sup +}{ital {bar b}W}{sup {minus}}{ital g} and {ital qg}{r_arrow}{ital bW}{sup +}{ital {bar b}W}{sup {minus}}{ital q} which are relevant for the study of events with an additional jet in {ital t{bar t}} production at the Fermilab Tevatron {ital p{bar p}} collider. Our calculation includes (i) the contributions from gluons emitted during the top quark production and decay stages and the interference between these, and (ii) the complete set of Feynman diagrams corresponding to both resonant and nonresonant top quark production. We study the distribution in phase space of the additional parton jet and make comparisons with previous studies based on the soft-gluon approximation and with results from parton-shower Monte Carlo simulations. The implications for top quark mass measurements are briefly discussed.
- Research Organization:
- University of Rochester
- DOE Contract Number:
- FG02-91ER40685
- OSTI ID:
- 69082
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 1 Vol. 52; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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