ar X iv : h ep - p h / 98 03 43 3 v 1 2 4 M ar 1 99 8 THEORETICAL STATUS OF THE B c MESON

ar X iv : h ep - p h / 98 05 30 4 v 1 1 3 M ay 1 99 8 Λ b → Λ c P ( V ) Nonleptonic Weak Decays

ar X iv : h ep - p h / 04 03 25 8 v 1 2 4 M ar 2 00 4 ρ - meson form factors and QCD sum rules

ρ-meson form factors and QCD sum rules. Abstract We present predictions for ρ-meson form factors obtained from the analysis of QCD sum rules in next-to-leading order of perturbation theory. The radiative corrections turn out to be sizeable and should be taken into account in rigorous theoretical analysis.

ar X iv : h ep - p h / 98 03 22 4 v 1 3 M ar 1 99 8 NONLEPTONIC DECAYS : AMPLITUDE ANALYSIS AND SUPERMULTIPLET SCHEMES

We give best covariant amplitude decompositions for two-body decay processes involving ground state hadrons (0−, 1−, 1 2 + , 3 2 + ) and show how these are simply related to helicity amplitudes. After discussing how electromagnetic interactions are incorporated via meson dominance in a relativistic supermultiplet scheme, we extend the analysis to weak flavour changing nonleptonic processes. Suc...

ar X iv : h ep - p h / 98 11 43 9 v 1 2 3 N ov 1 99 8 Pomeron Flux Factor and Diffractive W and Jet Rates ∗

Experimental rates of W and dijets diffractively produced at the Tevatron Collider have recently become available. We use parametrizations of the pomeron structure function obtained from HERA data by two different schemes to compare theoretical expectations with the measured rates.

ar X iv : h ep - p h / 98 10 43 8 v 1 2 1 O ct 1 99 8 Sudakov suppression in the soft heavy to light meson transition form factor

We calculate hard gluon contribution to the decay vertex that determines the heavy-to-light meson transition form factor at large recoil. It is found that resulting Sudakov suppression significantly decreases the soft, wave function dependent contribution to the form factor. Phenomenological implications of these findings are discussed. Typeset using REVTEX 1