Renormalization Group Improved Sum Rule Analysis for the Bottom Quark Mass

Details Renormalization Group Improved Sum Rule Analysis for the Bottom Quark Mass Renormalization Group Improved Sum Rule Analysis for the Bottom Quark Mass

2006-01-23

arxiv.org/abs/hep-ph/0601185v1

Phys.Rev.D73:111501,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, two figures

Scientific paper

10.1103/PhysRevD.73.111501

We study the effect of resumming large logarithms in the determination of the bottom quark mass through a non-relativistic sum rule analysis. Our result is complete at next-to-leading-logarithmic accuracy and includes some known contributions at next-to-next-to-leading logarithmic accuracy. Compared to finite order computations, the reliability of the theoretical evaluation is greatly improved, resulting in a substantially reduced scale dependence and a faster convergent perturbative series. This allows us to significantly improve over previous determinations of the $\MS$ bottom quark mass, $\bar{m}_b$, from non-relativistic sum rules. Our final figure reads $\bar{m}_b(\bar{m}_b)=4.19\pm 0.06$ GeV.

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