P. C. Vinodkumar

Masses and magnetic moments of heavy flavour baryons in the hyper central model

Heavy flavour baryons containing one or two charm (beauty) quarks with light flavour combinations are studied using the hyper central description of the three-body system. The confinement potential is assumed as hyper central Coulomb plus power potential with a power index p. The ground state ( and ) masses of heavy flavour baryons are computed for different power indices, p starting from 0.5 to 2.0. The predicted masses are found to attain a saturated value with respect to the variation in p beyond the power index p > 1.0. Using the spin-flavour structure of the constituting quarks and by defining the effective mass of the confined quarks within the baryons, the magnetic moments are computed with no additional free parameters. The masses and magnetic moments of the single heavy and double heavy flavour baryons are found to be in accordance with other model predictions.

Properties of Q Q ¯ mesons in nonrelativistic QCD formalism

The decay rates of QQ mesons (Q {epsilon} c, b) are studied in the nonrelativistic quantum chromodynamics (QCD) formalism in terms of their short-distance and long-distance coefficients. The long-distance coefficients are obtained through phenomenological potential model description of the mesons. The model parameters that reproduces the mass spectrum of the cc, bb, and cb mesons are employed to study the decay widths of these mesons. We extract the mass spectrum and the respective radial wave functions from the different potential models as well as from a nonrelativistic phenomenological quark-antiquark potential of the type V(r)=-({alpha}{sub c}/r)+Ar{sup {nu}}, with {nu} varying from 0.5 to 2. The spin hyperfine and spin-orbit interactions are employed to obtain the masses of the pseudoscalar and vector mesons. The decay constants with QCD corrections are computed in this model as well as in the case of other potential models for comparison. The digamma and dileptonic decays of cc and bb mesons are investigated using some of the known potential models without and with radiative corrections up to the lowest order. These decay width are also computed within the nonrelativistic QCD formalism up to O(v{sup 4}) by making uses of the respective spectroscopic parameters of the models. Ourmorexa0» theoretical predictions of the decays of the cc and bb mesons and the results obtained from some of the other potential schemes are compared with the experimental values. The partial widths and lifetime of the B{sub c} meson are also computed using the model parameters and are found to be in good accordance with the experimental values.«xa0less

Properties of Q anti-Q(Q epsilon b, c) mesons in Coulomb plus Power potential

The decay rates and spectroscopy of the

Masses and decay constants of heavy-light flavour mesons in a variational scheme

Q bar Q

Heavy flavor baryons in hypercentral model

(Q in c, b)

Decay rates of quarkonia and potential models

mesons are computed in non-relativistic phenomenological quark antiquark potential of the type

Two-photon, two-gluon and radiative decays of heavy flavoured mesons

V(r)=-frac{alpha_c}{r}+A r^{nu}

Single heavy flavour baryons using Coulomb plus a power law interquark potential

, (CPP

Decay rates of quarkonia with NRQCD formalism using spectroscopic parameters of potential models

_{nu}