E. Bagan

Radiative corrections to the decay B→πeν and the heavy quark limit

Abstract We calculate radiative corrections to the light-cone sum rule for the semileptonic form factor in B → πeν decays and thus remove the major uncertainty in determining the CKM mixing angle | V ub | by this method. We discuss the remaining uncertainties and perspectives for further studies. The structure of the radiative corrections suggests factorization of soft (end-point) and hard rescattering contributions in heavy-to-light decays in the heavy quark limit.

Baryon sum rules in the heavy quark effective theory

Abstract In the infinite mass limit one can separate unambigously positive and negative parity contributions to baryonic correlators. We examine the reliability of the baryon sum rules in the heavy quark effective theory. Finite mass corrections are found to be large while the predictions remain qualitative.

Hadrons with charm and beauty

AbstractBy combining potential models and QCD spectral sum rules (QSSR), we discuss the spectroscopy of the

Next-to-leading order radiative corrections to the decay b → ccs

(b\bar c)

SU(2) symmetry breaking from QCD sum rules

mesons and of the (bcq), (ccq) and (bbq) baryons (q≡d ors), the decay constant and the (semi)leptonic decay modes of theBc meson. For the masses, the best predictions come from potential models and read:

The structure of the QCD potential in 2+1 dimensions

M_{B_c } = (6255 \pm 20)