Eur. Phys. J. C (2007) 52: 375-382
https://doi.org/10.1140/epjc/s10052-007-0356-x

Regular Article - Theoretical Physics

Double-lepton polarization asymmetries in Λ_b→Λℓ⁺ℓ^- decay in universal extra dimension model

¹ Physics Department, Middle East Technical University, Inönü Bulvari, 06531, Ankara, Turkey
² Physics Department, Gazi University, 06500, Teknik Okullar, Ankara, Turkey

^* e-mail: savci@verdi.physics.metu.edu.tr

Received: 7 October 2006
Revised: 24 May 2007
Published online: 10 August 2007

Abstract

Double-lepton polarization asymmetries in Λ_b→Λℓ⁺ℓ^- decay are calculated in the universal extra dimension (UED) model. It is found that numerous double-lepton polarization asymmetries are very sensitive to the UED model and therefore can be a very useful tool for establishing new physics predicted by the UED model.