One-Loop QCD Mass Effects in the Production of Polarized Bottom and Top Quarks

Details One-Loop QCD Mass Effects in the Production of Polarized Bottom and Top Quarks One-Loop QCD Mass Effects in the Production of Polarized Bottom and Top Quarks

1993-11-22

arxiv.org/abs/hep-ph/9311332v1

Z.Phys. C63 (1994) 575-579

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 p. (5 figs available upon request), LaTeX, MZ-TH/93-30, RAL/93-81, FTUV/93-46

Scientific paper

The analytic expressions for the production cross sections of polarized bottom and top quarks in $e^+e^-$ annihilation are explicitly derived at the one-loop order of strong interactions. Chirality-violating mass effects will reduce the longitudinal spin polarization for the light quark pairs by an amount of $3\%$, when one properly considers the massless limit for the final quarks. Numerical estimates of longitudinal spin polarization effects in the processes $e^+e^-\to b\bar{b}(g)$ and $e^+e^- \to t\bar{t}(g)$ are presented.

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