E. Ferreira

Form-factors and decay rates for heavy Lambda semileptonic decays from QCD sum rules

QCD sum rules for the determination of form factors of

Semileptonic D decay into scalar mesons: A QCD sum rule approach

{ensuremath{Lambda}}_{b}

Nonperturbative QCD treatment of \(J/\Psi\) photoproduction

and

Nonperturbative and perturbative aspects of photo- and electroproduction of vector mesons

{ensuremath{Lambda}}_{c}

Exclusive electroproduction of J/ψ mesons

semileptonic decays are investigated. With a form for the baryonic current appropriate for the limits of the heavy quark symmetries, the different tensor structures occurring in the two- and three-point functions are separately studied, and in each case general relations are written for the form factors. Particular attention is given to the treatment of the kinematical region ascribed to the continuum. The t dependence of the form factors and the decay rates are numerically evaluated and compared to experimental information.

Elasticpp¯scattering amplitude at 1.8 TeV and determination of total cross section

Semileptonic decays of D mesons into scalar hadronic states are investigated. Two extreme cases are considered: (a) the meson decays directly into an uncorrelated scalar state of two mesons and (b) the decay proceeds via resonance formation. QCD sum rules including instanton contributions are used to calculate total and differential decay rates under the two assumptions.

Semileptonic D decay into scalar mesons

Abstract. We present a nonperturbative QCD calculation of elastic

Analysis of pp and pp̄ in forward scattering using derivative dispersion relations

J/psi

The short-range delta-nucleon interaction

meson production in photon-proton scattering at high energies. Using light cone wave functions of the photon and vector mesons, and the framework of the model of the stochastic QCD vacuum, we calculate the differential and integrated elastic cross sections for

Elastic amplitudes studied with the LHC measurements at 7 and 8 TeV

gamma p rightarrow J/psi p