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Heavy-light mesons scattering from nucleons: Quark-gluon and meson exchanges
(2010-12-01)
We investigate the scattering of heavy-light K and D mesons by nucleons at low energies. The short-distance part of the interaction is described by quark-gluon interchange and the longdistance part is described by a ...
NONPERTURBATIVE HQET AT ORDER 1/m
(WORLD SCIENTIFIC PUBL CO PTE LTD, 2010)
We summarize the first results for masses and decay constants of bottom-strange (pseudo-scalar and vector) mesons from nonperturbatively renormalized heavy-quark effective theory (HQET), using lattice-QCD simulations in ...
Threshold effects on heavy quark production in interactions
(1993-01-01)
The exchange of gluons between heavy quarks produced in e+e- interactions results in an enhancement of their production near threshold. We study QCD threshold effects in collisions. The results are relevant to heavy quark ...
1(--) and 0(++) heavy four-quark and molecule states in QCD
(ELSEVIER SCIENCE BVAMSTERDAM, 2012)
We estimate the masses of the 1(--) heavy four-quark and molecule states by combining exponential Laplace (LSR) and finite energy (FESR) sum rules known perturbatively to lowest order (LO) in alpha(s) but including ...
Fundamentals of the 3-3-1 model with heavy leptons
(2018-02-19)
This work is a brief presentation of the theory based on the SU(3)c O× SU(3)L O× U(1)X gauge group in the presence of heavy leptons. Recent studies [1] have considered a set of four possible variants for the 3-3-1HL, whose ...
Heavy mesons decays in the light-front
(2010-12-01)
The light-front approach is applied to calculate electromagnetic form factors of pseudoscalar mesons (ie., pion, kaon and D mesons) and semileptonic transition form factors of the heavy ones. The results are compared with ...
Heavy Mesons Spectroscopy
(2014)