Next-to-Leading-Order Corrections to Momentum Correlations in $Z^0 \to b\bar{b}$

Details Next-to-Leading-Order Corrections to Momentum Correlations in $Z^0 \to b\bar{b}$ Next-to-Leading-Order Corrections to Momentum Correlations in $Z^0 \to b\bar{b}$

1997-05-12

arxiv.org/abs/hep-ph/9705295v1

Phys.Lett. B407 (1997) 57-60

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, Latex, epsfig, 1 figure

Scientific paper

10.1016/S0370-2693(97)00721-1

We recently completed a calculation of the process $e^+e^- \to Q\bar{Q}+X$, where Q is a heavy quark, at order $O(\alpha_s^2)$. As a first application of this calculation we compute the momentum correlations of $b\bar{b}$ pairs at next-to-leading-order. This quantity is interesting since it may affect the determination of $R_b$ as measured in $Z^0$ decays. We find that the next-to-leading corrections are of moderate size, thus confirming the conclusions that can be drawn from the leading-order calculation.

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