New physics upper bound on the branching ratio of B_s --> l+ l-

Details New physics upper bound on the branching ratio of B_s --> l+ l- New physics upper bound on the branching ratio of B_s --> l+ l-

2005-02-14

arxiv.org/abs/hep-ph/0502120v2

Phys.Lett.B620:61-68,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, no figures, discussion about scalar/pseudo-scalar effective Lagrangian added

Scientific paper

10.1016/j.physletb.2005.06.005

We consider the most general new physics effective Lagrangian for b --> s l+ l-. We derive the upper limit on the branching ratio for the processes B_s --> l+ l- where l=e, mu, subject to the current experimental bounds on related processes, B --> K l+ l- and B --> K* l+ l-. If the new physics interactions are of vector/axial-vector form, the present measured rates for B --> (K,K*) l+ l- constrain B(B_s --> l+ l-) to be of the same order of magnitude as their respective Standard Model predictions. On the other hand, if the new physics interactions are of scalar/pseudo-scalar form, B --> (K,K*) l+ l- rates do not impose any constraint on B_s --> l+ l- and the branching ratios of these decays can be as large as present experimental upper bounds. If future experiments measure B(B_s --> l+ l-) to be > 10^{-8} then the new physics giving rise to these decays has to be of the scalar/pseudo-scalar form.

Affiliated with

Also associated with

No associations

Rating

New physics upper bound on the branching ratio of B_s --> l+ l- 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 New physics upper bound on the branching ratio of B_s --> l+ l-, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and New physics upper bound on the branching ratio of B_s --> l+ l- will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-413313