Abstract
Using the related form factors from full QCD which recently are available, we provide a comprehensive analysis of the Λ b → Λℓ+ℓ− transition in universal extra dimension model in the presence of a single universal extra dimension called the Applequist-Cheng-Dobrescu model. In particular, we analyze some related observables like branching ratio, forward-backward asymmetry, double lepton polarization asymmetries and polarization of the Λ baryon in terms of compactification radius and corresponding form factors. We present the sensitivity of these observables to the compactification parameter, 1/R up to 1/R = 1000 GeV. We also compare the results with those obtained using the form factors from heavy quark effective theory as well as the SM predictions.
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Azizi, K., Katırcı, N. Investigation of the Λ b → Λℓ+ℓ− transition in universal extra dimension using form factors from full QCD. J. High Energ. Phys. 2011, 87 (2011). https://doi.org/10.1007/JHEP01(2011)087
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DOI: https://doi.org/10.1007/JHEP01(2011)087