Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-03-16
Eur.Phys.J.C20:259-269,2001
Physics
High Energy Physics
High Energy Physics - Phenomenology
32 pages, latex, 4 postscript figures, revised version to appear in European Physical Journal C, discussion of the choice of t
Scientific paper
10.1007/s100520100662
We present an analysis of the m_s^2-corrections to Cabibbo-suppressed tau lepton decays employing contour improved resummation within an effective scheme which is an essential new feature as compared to previous analyses. The whole perturbative QCD dynamics of the tau-system is described by the beta-function of the effective coupling constant and by two gamma-functions for the effective mass parameters of the strange quark in different spin channels. We analyze the stability of our results with regard to high-order terms in the perturbative expansion of the renormalization group functions. A numerical value for the strange quark mass in the MS scheme is extracted m_s(M_\tau)=130\pm 27_{exp}\pm 9_{th} MeV. After running to the scale 1 GeV this translates into m_s(1 GeV)=176 \pm 37_{exp}\pm 13_{th} MeV.
Koerner Juergen G.
Krajewski F.
Pivovarov A. A.
No associations
LandOfFree
Determination of the strange quark mass from Cabibbo-suppressed tau decays with resummed perturbation theory in an effective scheme 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 Determination of the strange quark mass from Cabibbo-suppressed tau decays with resummed perturbation theory in an effective scheme, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Determination of the strange quark mass from Cabibbo-suppressed tau decays with resummed perturbation theory in an effective scheme will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-551859