121638203
Strong couplings in broken SU(4)
Symmetry breaking effects on the strong coupling constants are studied assuming intermediate states to be nonexotic and s–u channel symmetry of the symmetry breaking Hamiltonian. Numerical values of the charmed and uncharmed BP couplings are calculated.
120103541
Preliminary estimate of branching ratios of weak hadronic decays of bottom baryons emitting charmless scalar mesons
We give the first estimate of charmless scalar-meson emitting weak hadronic decays of $\varLambda _{b}^{0}$, $\varXi _{b}^{0}$ and $\varXi _{b}^{ -}$ bottom baryons employing the pole model and consequently predict their branching ratios.
122629163
Higher Order Effects on Radiative Decays of Mesons
122007970
Radiative weak decays of baryons
120063159
Weak nonleptonic decays of charm baryons emitting scalar mesons
We investigate the weak nonleptonic decays of charm baryons emitting scalar mesons employing the factorization scheme and predict their branching ratios.
119573508
Weak Gamma Decays and the Nonleptonic Weak Hamiltonian
17250672
Implications of CP asymmetry parameter sin2β on structural features of texture specific mass matrices
Abstract In the context of Fritzsch-like texture 4 zero Hermitian quark mass matrices, we have attempted to find an ‘exact’ formula for sin 2 β wherein the dependence of β on the quark masses and the elements of the quark mass matrices is visible in a simple and clear manner. This has been achieved keeping in mind the strong hierarchy of the quark masses and assuming the weak hierarchy amongst the elements of the mass matrices. This ‘exact’ formula represents a vast improvement over the leading order formula based on strong hierarchy of the elements of the mass matrices. Apart from showing the compatibility of texture 4 zero mass matrices with the present value of sin 2 β and other CKM parameters, we find interesting conclusions regarding the structural features of the mass matrices.
118676024
Generic lepton mass matrices and neutrino oscillations
Several intriguing aspects of neutrino oscillation phenomenology like the origin of small neutrino masses, the absolute neutrino mass scale, the neutrino mass hierarchy, i.e. normal or inverted and the nature of neutrinos, i.e. Dirac or Majorana, etc. have been addressed from a general perspective. We show how the fundamental considerations of unitary transformations, naturalness and seesaw mechanism suffices to determine the texture structure of fermion Yukawa couplings and discuss the significance of the effective mass in 0{\nu}{\beta}{\beta} decay for the texture structure of these couplings.