Gluon Radiation in t\bar{t} Production at the Tevatron p\bar{p} Collider

Abstract

We present a complete calculation of the matrix elements for the processes $q\bar{q},gg\to b{W}^{+}\bar{b}{W}^{-}g$ and $qg\to b{W}^{+}\bar{b}{W}^{-}q$ which are relevant for the study of events with an additional jet in $t\bar{t}$ production at the Tevatron $p\bar{p}$ collider. Our calculation includes (i) the contributions from gluons emitted during the top production and decay stages and the interference between these, and (ii) the complete set of Feynman diagrams corresponding to both resonant and non-resonant top 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 mass measurements are briefly discussed.

12 pages, latex, 9 uuencoded postscript figures

References in corpus (5)

• Automatic Generation of Tree Level Helicity Amplitudes
• Evidence for Top Quark Production in $\bar{p}p$ Collisions at $\sqrt{s}=1.8$ TeV
• Parton Distributions of the Proton
• Soft Gluon Radiation in Hadronic $t\bar{t}$ Production
• Additional Soft Jets in $\mathrm{t}\bar{\mathrm{t}}$ Production at the Tevatron $\pp$ Collider

Cited by in corpus (11)

• Standard Model Top Quark Asymmetry at the Fermilab Tevatron
• Measurement of the Top Quark Mass with the Collider Detector at Fermilab
• ttbar production cross section in ppbar collisions at sqrt{s} = 1.8 TeV
• Final state QCD corrections to off-shell single top production in hadron collisions
• The discovery of the top quark
• Gluon Radiation in $t\bar{t}$ Production and Decay at the LHC
• Jet Algorithms and Top Quark Mass Measurement
• Soft Gluon Radiation in Top Events: Effect of Hadronic $W$ Decays
• Top pair production with an extra gluon at the Tevatron
• Improving the Measurement of the Top Quark Mass
• Top-antitop pair production via $b$-quark initiated processes at the Large Hadron Collider