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

S. Groote; W. S. Huo; A. Kadeer; J. G. Korner

doi:10.1103/physrevd.76.014012

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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

S. Groote·W. S. Huo·A. Kadeer·J. G. Korner

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Abstract

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 $t(\uparrow) \to X_b + l^+ + ν_\ell$ 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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S. Groote, W. S. Huo, A. Kadeer, J. G. Korner. 2008-02-25. 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. https://doi.org/10.1103/physrevd.76.014012

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