Accurate Bottom-Quark Mass from Borel QCD Sum Rules for the Decay Constants of B and Bs Mesons
- 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 m(b) and the B-meson decay constant f(B), namely, delta f(B)/f(B) approximate to -8 delta m(b)/m(b). This fact opens the possibility of an accurate sum-rule extraction of m(b) by using f(B) as input. Combining precise lattice QCD determinations of f(B) with our sum-rule analysis based on the three-loop O(alpha(2)(s)) heavy-light correlation function leads to (m) over bar (b)((m) over bar (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
- No. of pages
- 8
- DOI
- https://doi.org/10.22323/1.183.0048
- Publication date
- 2013
- 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-the-decay-constants-of-b-and-bs-mesons(b2b7bb32-b8b2-4355-81fd-4b4f203123a6).html