On the P-Wave Contributions to the Cross Sections of $t\bar{t}$ and $\t\bar{\t}$ Near Threshold

Abstract

The approach used for the determination of S-wave amplitudes containing the application of the nonrelativistic approximation in the case of P-waves leads to unphysical divergencies. We show how to avoid the latter in calculations of contributions to the cross section near threshold in agreement with field theory. This enables us to give quantitatively reliable predictions for the forward-backward asymmetry and for the axial contribution to the total cross section for the top-antitop system. Also the cross section for the production of stop-antistop near threshold is determined.

23 pages, LaTeX, 9 uuencoded figures

References in corpus (9)

• Observation of Top Quark Production in Pbar-P Collisions
• Observation of the Top Quark
• Polarization in Top Quark Pair Production near Threshold
• Gluon Radiation Off Scalar Stop Particles
• $e^{+}{e}^{-}\to b\bar{b}{W}^{+}{W}^{-}$ at the Next Linear Collider, Top-Pairs and Higgs Production
• Momentum Distributions in $t\bar{t}$
• Gauge-Independent Bound-State Corrections to the Toponium Decay Width
• Rigorous QCD-Potential for the $t\bar{t}$-System at Threshold
• Relativistic Bound State Equation for Unstable Fermions and the Toponium Width

Cited by in corpus (2)

• O(alpha_s^2) Corrections to e+e- to ttbar Total and Differential Cross Sections Near Threshold
• Final-State Interactions in e^+e^- -> t\bar{t} -> b l^+ ν\bar{b} W^- Near Top Quark Threshold