Angular Distribution and Polarization of Photons in the Inclusive Decay $Λ_b\to X_s\,γ$

Details Angular Distribution and Polarization of Photons in the Inclusive Decay $Λ_b\to X_s\,γ$ Angular Distribution and Polarization of Photons in the Inclusive Decay $Λ_b\to X_s\,γ$

1995-05-22

arxiv.org/abs/hep-ph/9505354v1

Phys.Lett. B355 (1995) 579-583

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, LaTeX, uses epsf, 2 figures appended as uuencoded, compressed eps tar-files

Scientific paper

10.1016/0370-2693(95)00722-W

We study the angular distribution of photons produced in the inclusive decay of a polarized $\Lambda_b$, $\Lambda_b\to X_s\,\gamma$, using the technique of Heavy Quark Effective Theory. Finite non-perturbative corrections are obtained relative to the free quark decay $b\to s\gamma$. These corrections affect significantly the intensity and polarization of photons emitted at small angles relative to the $\Lambda_b$ spin direction.

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