V_us (and m_s) From Hadronic Tau Decays

Details V_us (and m_s) From Hadronic Tau Decays V_us (and m_s) From Hadronic Tau Decays

2007-03-30

arxiv.org/abs/hep-ph/0703314v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, prepared for the Proceedings of CKM'06, Nagoya, Japan

Scientific paper

We describe how complications encountered in the extraction of V_us from flavor-breaking hadronic tau decay sum rules, in particular those associated with the slower than previously anticipated convergence of the relevant D=2 OPE series, can be successfully dealt with through judicious choices of sum rule weight. Problems with the previously proposed ``(0,0) spectral weight'' version of the analysis, and the much improved situation produced by the use of a number of alternate, non-spectral-weights, are demonstrated. The method is shown to promise a sub-0.0010-accuracy determination of V_us once analysis of the improved strange spectral data from BABAR and BELLE is completed. Connections to the tau versus electroproduction puzzle in the evaluation of the leading order hadronic contribution to (g-2)_mu are also discussed.

Affiliated with

Also associated with

No associations

Rating

V_us (and m_s) From Hadronic Tau 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 V_us (and m_s) From Hadronic Tau Decays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and V_us (and m_s) From Hadronic Tau Decays will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-650798