0000000000537282

AUTHOR

J. Penarrocha

showing 2 related works from this author

The K0 -−K0B-factor in the QCD-hadronic duality approach

1991

9 páginas, 4 figuras.-- CERN-TH-6015-91 ; CPT-2416 ; FTUV-91-9.

Quantum chromodynamicsPhysicsParticle physicsPhysics and Astronomy (miscellaneous)HadronHigh Energy Physics::PhenomenologyFísicaElementary particleInvariant (physics)B factorCalculusHigh Energy Physics::ExperimentQuantum field theoryEngineering (miscellaneous)
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B and B(S) decay constants from moments of finite energy sum rules in QCD

2004

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.

Quantum chromodynamicsPhysicsParticle physicsQCD sum rulesPhysics and Astronomy (miscellaneous)High Energy Physics::LatticeHigh Energy Physics::PhenomenologyLattice (group)Duality (optimization)Order (ring theory)FOS: Physical sciencesFísicaBottom quarkPseudoscalarHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)High Energy Physics::ExperimentEngineering (miscellaneous)Energy (signal processing)
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