QCD sum rule determination of the charm-quark mass

Details QCD sum rule determination of the charm-quark mass QCD sum rule determination of the charm-quark mass

2011-02-18

arxiv.org/abs/1102.3835v1

Phys.Rev.D83:074014,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

Scientific paper

10.1103/PhysRevD.83.074014

QCD sum rules involving mixed inverse moment integration kernels are used in order to determine the running charm-quark mass in the $\bar{MS}$ scheme. Both the high and the low energy expansion of the vector current correlator are involved in this determination. The optimal integration kernel turns out to be of the form $p(s) = 1 - (s_0/s)^2$, where $s_0$ is the onset of perturbative QCD. This kernel enhances the contribution of the well known narrow resonances, and reduces the impact of the data in the range $s \simeq 20 - 25 GeV^2$. This feature leads to a substantial reduction in the sensitivity of the results to changes in $s_0$, as well as to a much reduced impact of the experimental uncertainties in the higher resonance region. The value obtained for the charm-quark mass in the $\bar{MS}$ scheme at a scale of 3 GeV is $\bar{m}_c (3 GeV) = 987 \pm 9 MeV$, where the error includes all sources of uncertainties added in quadrature.

Affiliated with

Also associated with

No associations

Rating

QCD sum rule determination of the charm-quark mass 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 QCD sum rule determination of the charm-quark mass, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and QCD sum rule determination of the charm-quark mass will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-212876