Azimuthal correlation between the $(\vec{p}_l,\vec{p}_{X_b})$ and $(\vec{p}_l,\vec{P}_t)$ planes in the semileptonic rest frame decay of a polarized top quark: An $O(α_s)$ effect

Details Azimuthal correlation between the $(\vec{p}_l,\vec{p}_{X_b})$ and $(\vec{p}_l,\vec{P}_t)$ planes in the semileptonic rest frame decay of a polarized top quark: An $O(α_s)$ effect Azimuthal correlation between the $(\vec{p}_l,\vec{p}_{X_b})$ and $(\vec{p}_l,\vec{P}_t)$ planes in the semileptonic rest frame decay of a polarized top quark: An $O(α_s)$ effect

2006-02-02

arxiv.org/abs/hep-ph/0602026v2

Phys.Rev.D76:014012,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

latex, 12 pages with 2 figures in the text, typos removed,comment and references added, replaced with published version

Scientific paper

10.1103/PhysRevD.76.014012

The azimuthal correlation between the planes formed by the vectors $(\vec{p}_\ell,\vec{p}_{X_b})$ and $(\vec{p}_\ell,\vec{P}_t)$ in the semileptonic rest frame decay of a polarized top quark $t(\uparrow) \to X_b + l^+ + \nu_\ell$ belongs to a class of polarization observables involving the top quark which vanish at the Born term level in the standard model. We determine the next--to--leading order QCD corrections to the afore-mentioned azimuthal correlation and compare the result to the corresponding contribution of a non--standard--model right--chiral quark current.

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