Accurate bottom-quark mass from Borel QCD sum rules for f(B) and f(Bs)
- Author(s)
- Wolfgang Lucha, Dmitri Melikhov, Silvano Simula
- Abstract
We prove that Borel QCD sum rules for heavy–light currents yield very strong correlations between the b-quark mass mb and the B-meson decay constant fB, namely, δfB/fB≈−8δmb/mb. This fact opens the possibility of an accurate sum-rule extraction of mb by using fB as input. Combining precise lattice QCD determinations of fB with our sum-rule analysis based on the three-loop O(α2s) heavy–light correlation function leads to m¯¯¯b(m¯¯¯b)=(4.247±0.034) GeV.
- Organisation(s)
- Particle Physics
- External organisation(s)
- Österreichische Akademie der Wissenschaften (ÖAW), Anuchin Research Institute and Museum of Anthropology, Universität Wien, Istituto Nazionale di Fisica Nucleare (INFN), Roma
- Journal
- Physical Review D
- Volume
- 88
- No. of pages
- 10
- ISSN
- 1550-7998
- DOI
- https://doi.org/10.1103/PhysRevD.88.056011
- Publication date
- 09-2013
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103034 Particle physics
- Keywords
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/accurate-bottomquark-mass-from-borel-qcd-sum-rules-for-fb-and-fbs(6f9636eb-0d54-4e18-8a12-a7c6ec7eb76a).html