ﻻ يوجد ملخص باللغة العربية
The electromagnetic form factors of light and heavy pseudoscalar mesons are calculated within two covariant constituent-quark models, a light-front and a dispersion relation approach. We investigate the details and physical origins of the model dependence of various hadronic observables: the weak decay constant, the charge radius and the elastic electromagnetic form factor.
Weak $B^-rightarrow D^0, pi^0$ and $D^-rightarrow {K}^0, pi^0$ transition form factors are described in both the space- and time-like momentum transfer regions, within a constituent-quark model. Neutrino-meson scattering and semileptonic weak decays
The temperature dependence of the mass, leptonic decay constant, and width of heavy-light quark peseudoscalar and vector mesons is obtained in the framework of thermal Hilbert moment QCD sum rules. The leptonic decay constants of both pseudoscalar an
A symmetry-preserving approach to the two valence-body continuum bound-state problem is used to calculate the elastic electromagnetic form factors of the $rho$-meson and subsequently to study the evolution of vector-meson form factors with current-qu
We predict the $mathcal{V} to mathcal{P} gamma$ decay widths and the $mathcal{V} to mathcal{P} gamma^{*}$ transition form factors, where $mathcal{V}=(rho, omega, K^*, phi)$ and $mathcal{P}= (pi,K, eta,eta^prime)$, using spin-improved holographic ligh
In an explicitly covariant light-front formalism, we analyze transition form factors between pseudoscalar and scalar mesons. Application is performed in case of the $B to f_0(980)$ transition in the full available transfer momentum range $q^2$.