Unitarity Triangle Without Semileptonic Decays

Details Unitarity Triangle Without Semileptonic Decays Unitarity Triangle Without Semileptonic Decays

2009-11-30

arxiv.org/abs/0912.0002v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 5 figures, Inputs and numerics updated, References added, Conclusions unchanged

Scientific paper

Use of semi-leptonic decays has become standard in constraining the Unitarity Triangle. Bearing in mind that precise calculations of these are very challenging, we propose an entirely new approach. In particular the |Vcb| + epsilon_K constraint, which depends extremely sensitively on Vcb in the traditional method, is replaced by the interplay between epsilon_K, BR(B ->tau nu) and Delta M_Bs. It is found that even in this method tensions with the Standard Model persist at the ~1.8 sigma level. Furthermore, improvements on the B -> tau nu branching ratio and on the lattice determination of f_Bs Bs^(1/2) can increase the effectiveness of this method significantly.

Affiliated with

Also associated with

No associations

Rating

Unitarity Triangle Without Semileptonic Decays 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 Unitarity Triangle Without Semileptonic Decays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Unitarity Triangle Without Semileptonic Decays will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-444241