B-c mass up to order alpha(4)(s) - art. no. 094019

Authors
Brambilla, N Vairo, A
Citation
N. Brambilla et A. Vairo, B-c mass up to order alpha(4)(s) - art. no. 094019, PHYS REV D, 6209(9), 2000, pp. 4019
Citations number
37
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW D
ISSN journal
05562821 → ACNP
Volume
6209
Issue
9
Year of publication
2000
Database
ISI
SICI code
0556-2821(20001101)6209:9<4019:BMUTOA>2.0.ZU;2-R
Abstract
We evaluate in perturbative QCD, up to order alpha (4)(s) the mass of the B -c. We use the so-called 1S mass in order to improve the convergence of the perturbative series. Our result is E(B-c)(pert) = 6326(-9)(+29) MeV. Nonpe rturbative effects are discussed. A comparison with potential models seems to be consistent with nonperturbative contributions of the order - (40-100) MeV.