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Investigation of the Λ b → Λℓ+ℓ− transition in universal extra dimension using form factors from full QCD

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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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Authors and Affiliations

  1. Physics Division, Faculty of Arts and Sciences, Doğuş University, Acıbadem-Kadıköy, 34722, Istanbul, Turkey

    K. Azizi & N. Katırcı

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  1. K. Azizi
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  2. N. Katırcı
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Correspondence to K. Azizi.

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ArXiv ePrint: 1011.5647

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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

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