Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-07-27
Eur.Phys.J. C38 (2004) 277-281
Physics
High Energy Physics
High Energy Physics - Phenomenology
11 pages, 2 figures
Scientific paper
10.1140/epjc/s2004-02020-3
We use an appropriate combination of moments of finite energy sum rules in QCD in order to compute the B_q-meson decays constants f_B and f_{B_s}.We perform the calculation using a two-loop computation of the imaginary part of the pseudoscalar two point function in terms of the running bottom quark mass. The results are stable with the so called QCD duality threshold and they are in agreement with the estimates obtained from Borel transform QCD sum rules and lattice computations.
Bodi-Esteban F.
Bordes Jose
Penarrocha Jose
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