Low-energy neutrinoless lepton flavor-violating (LFV) processes are studied in an extension
of the standard model (SM) by heavy SU (2)× U (1) singlet Dirac neutrinos. An upper-bound …

We study the nine possible rare charm meson decays D→ Pl+ l−(P= π, K, η, η′) using
heavy meson chiral Lagrangians and find them to be dominated by the long distance …

Using limits of large energy effective theory and heavy quark effective theory, we propose a
simple parametrization of the heavy to light H→ V semileptonic form factors. Then we …

Current experimental information on the charm-meson decay observables in which the c→ s
ℓ ν ℓ transitions occur is well compatible with the Standard Model predictions. Recent …

A symmetry-preserving regularisation of a vector\(\times\) vector contact interaction (SCI) is
used to deliver a unified treatment of semileptonic transitions involving\(\pi\), K,\(D …

Using the factorization scheme for the nonleptonic D→> VV 0 weak amplitudes, we classify
all diagrams which arise in D→ Vγ decays and calculate them with the help of the hybrid …

A symmetry-preserving continuum approach to meson bound states in quantum field theory,
employed elsewhere to describe numerous π-and K-meson electroweak processes, is used …

Motivated by recent experimental results we reconsider semileptonic D→ P ℓ ν ℓ decays
within a model which combines heavy quark symmetry and properties of the chiral …

The Cabibbo suppressed decays D→ Vl+ l−(V is light vector meson) present in principle the
opportunity to observe the short distance FCNC transition c→ ul+ l−, which is sensitive to …

We investigate the contributions coming from the penguin operators in the nonresonant
B−→ M Mπ−(M= π−, K−, K 0) decays. The effective Wilson coefficients of the strong penguin …