C. P. Singh

Magnetic moments of baryons in broken SU(4)

Assuming that the anomalous magnetic moment interaction has the formaT11 +bT22 +cT44 +sTαα in SU(4), which may arise due to symmetry breaking or some other dynamical effects, we have obtained the magnetic moments and the transition moments of the ordinary and charmed baryons.

Quark model predictions on the masses of heavier vector mesons

We use the quark model considerations of Federman, Rubinstein and Talmi and the relation (mψ/mϕ)≃(mϒ/mψ)≃(mϒ/mϒ) to compute the masses of beautiful and tasty vector mesons.

First and second order hadron mass formulas in internal SU(6)

We use broken SU(6) internal symmetry to derive the mass formulas amongst hadrons (1/2+, 3/2+, 0−, 1−) including second order mass contributions from symmetric 405 representation. Some hybrid mass relations are also obtained by relating second order parameters.

Masses of charmed andb-quark hadrons in quasinuclear coloured quark model

Employing non-relativistic quasinuclear coloured quark model, which provides a unified description of mesons and baryons, masses of charmed andb-quark hadrons are studied. Various mass splittings are estimated, and mass relations among them are obtained.

Electromagnetic Mass Differences of

The phenomenology of a quantum-chromodynamics-based constituent-quark model is employed to estimate the electromagnetic mass differences of the b-quark hadrons. The sign of D/sup -//sub b/-D/sup 0//sub b/ is found to be negative.