Volume 83, Number 4, August 2008
Article Number 41002
Number of page(s) 4
Section The Physics of Elementary Particles and Fields
Published online 04 August 2008
EPL, 83 (2008) 41002
DOI: 10.1209/0295-5075/83/41002

Lepton polarization asymmetry in B $\rightarrow$ l+l- decays in R-parity$\hbox{--} $violating minimal supersymmetric standard model

A. Mir, F. Tahir and K. Ahmed

Physics Department, COMSATS Institute of Information Technology - Islamabad, Pakistan

received 4 December 2007; accepted in final form 23 June 2008; published August 2008
published online 4 August 2008

We study the implications of R-parity-violating (Rp) Minimal Supersymmetric Standard Model (MSSM) in lepton polarization asymmetry (ALP) in B $\rightarrow$ l+l- decays. The analysis shows that the ALP is significant only in a certain phenomenological parametric region of Yukawa coupling products and branching fraction. The analysis further shows how ${\rm tan}\beta $ arising from type-II Higgs Doublet Model (2HDM) is constrained in the presence of Rp Yukawa interactions.

13.20.-v - Leptonic, semileptonic, and radiative decays of mesons.
13.88.+e - Polarization in interactions and scattering.

© EPLA 2008