Abstract
We update our perturbative determination of MS mass mb(mb), by including the recently obtained four-loop coefficient in the relation between the pole and MS mass. First the renormalon subtracted (RS or RS') mass is determined from the known mass of the Y(1S) meson, where we use the renormalon residue Nm obtained from the asymptotic behavior of the coefficient of the 3-loop static singlet potential. MS mass is then obtained using the 4-loop renormalon-free relation between the RS (RS') and MS mass. We argue that the effects of the charm quark mass are accounted for by effectively using Nf = 3 in the mass relations. The extracted value is mb(mb) = 4222(40) MeV, where the uncertainty is dominated by the renormalization scale dependence.
| Original language | English |
|---|---|
| Article number | 012063 |
| Journal | Journal of Physics: Conference Series |
| Volume | 762 |
| Issue number | 1 |
| DOIs | |
| State | Published - 21 Nov 2016 |
| Externally published | Yes |
| Event | 17th International Workshop on Advanced Computing and Analysis Techniques in Physics Research, ACAT 2016 - Valparaiso, Chile Duration: 18 Jan 2016 → 22 Jan 2016 |
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