121049834
Vector mesonic decays of 1/2+ baryons in charm changing mode
Charm changing parity violating (pv) weak decays of 1/2+ baryons are studied in the channel (1/2+ → 1/2+ + 1−). We compare the decay amplitude relations in Left Left and Left Right current–current interaction pictures in SU(4). We further extend these considerations to SU(8), thereby introducing quark spin. We notice that the B(3) → B(6) + V(8) mode, forbidden in the Glashow–Illopoulos–Maiani (GIM) scheme, arises through a right-handed current (RHC) interaction, whereas B(3) → B(8) + V(3*) vanish independently of the nature of the weak current.
122629163
Higher Order Effects on Radiative Decays of Mesons
119573508
Weak Gamma Decays and the Nonleptonic Weak Hamiltonian
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.
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.
122007970
Radiative weak decays of baryons
119113376
Implications of precision measurements on texture specific fermion mass matrices
Implications of texture specific mass matrices have been investigated for both quarks and neutrinos. Interestingly, for the case of quarks Fritzsch-like texture 4 zero mass matrices have been found to be compatible with the present precisely known sin 2β as well as other precise CKM matrix elements. In the case of leptonic mass matrices, for both Majorana and Dirac neutrinos we find that for texture 4, 5, 6 zero mass matrices the inverted hierarchy and degenerate scenarios of neutrino masses are ruled out by the present data.
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.