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Spin-Momentum Correlations in Inclusive Semileptonic Decays of Polarized $Λ_b$ Baryons

Jürgen G. Körner·Dan Pirjol
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Abstract

We consider spin-momentum correlations between the spin of the bottom baryon $Λ_{\mathrm{b}}$ and the momenta of its decay products in its inclusive semileptonic decay. We define several polar and azimuthal spin-momentum correlation measures in different event coordinate systems. The values of the spin-momentum correlation measures are calculated up to ${\cal O}(1/m_b^2)$ using the standard OPE und HQET methods. Some of the measures turn out to be sufficiently large to make them good candidates for a determination of the polarization of the $Λ_{\mathrm{b}}$ in e.g. $\mathrm{Z}$ decays.

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Jürgen G. Körner, Dan Pirjol. 1999-07-03. Spin-Momentum Correlations in Inclusive Semileptonic Decays of Polarized $Λ_b$ Baryons. https://doi.org/10.1103/physrevd.60.014021

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