$B^0_{d,s}\to μ^-μ^+$ in the MSSM

Details $B^0_{d,s}\to μ^-μ^+$ in the MSSM $B^0_{d,s}\to μ^-μ^+$ in the MSSM

2000-08-04

arxiv.org/abs/hep-ph/0008046v1

Phys.Rev. D63 (2001) 054012

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 pages, 6 figures

Scientific paper

10.1103/PhysRevD.63.054012

We present the results of the complete one-loop computation of the $B^0_{d,s}\to l^+l^-$ decay rate in the MSSM. Both sources of the FCNC, the CKM matrix and off-diagonal entries of the sfermion mass matrices are considered. Strong enhancement of the branching ratio (compared to the SM prediction) can be obtained in the large $\tan\beta\sim m_t/m_b$ regime in which the neutral Higgs boson ``penguin'' diagrams dominate. We make explicit the strong dependence of this enhancement on the top squarks mixing angle in the case of the chargino contribution and on the $\mu$ parameter in the case of the gluino contribution. We show that, in some regions of the MSSM parametre space, the branching ratio for this process can be as large as $10^{-(5-4)}$ respecting all existing constraints, including the CLEO measurement of $BR(B\to X_s\gamma)$. We also estimate, that for chargino and stop masses $\sim{\cal O}(100$ GeV) $BR(B^0_s\to l^+l^{\prime -})$ with $ll^\prime=e\tau$ or $\mu\tau$ can be of the order of $10^{-11}$ for the still allowed values of the off-diagonal entries in the slepton mass matrix.

Affiliated with

Also associated with

No associations

Rating

$B^0_{d,s}\to μ^-μ^+$ in the MSSM does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with $B^0_{d,s}\to μ^-μ^+$ in the MSSM, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and $B^0_{d,s}\to μ^-μ^+$ in the MSSM will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-344174