We study the exclusive rare decay B → k ̄ l l. We calculate the relevant form factors within a
relativistic constituent quark model, for the first time without employing the impulse …

Hadronic form factors for the rare weak transitions Λb→ Λ (*) are calculated using a
nonrelativistic quark model. The form factors are extracted in two ways. An analytic …

Using the most general, model independent form of the effective Hamiltonian, the exclusive
rare baryonic Λb→ Λℓ+ ℓ−(ℓ= μ, τ) decay is analyzed. We study the sensitivity of the …

We present a model independent analysis of Λ baryon polarizations in the Λ b→ Λ l+ l−
decay. The sensitivity of the averaged Λ polarizations to the new Wilson coefficients is …

We study lepton polarization asymmetries in the Λ b→ Λ l+ l− decay using the most general
model independent effective Hamiltonian. The dependence of the lepton polarizations and …

We study the effect of the FCNC mediated Z boson in the rare semileptonic baryonic decays
Λ b→ Λ l+ l-. We consider the model where the standard model fermion sector is extended …

Decay rate and forward–backward asymmetries in B→ K1l+l−, where K1 is the axial vector
meson, are calculated in the universal extra dimension (UED) model. The dependence of …

Using the most general, model independent form of effective Hamiltonian, the transverse
polarization PT of Λ in Λb→ Λℓ+ ℓ− decay is studied. It is observed that the averaged PT is …

We study the branching fractions and the lepton polarization asymmetries of rare B→ X s τ+
τ-and B→ K (*) τ+ τ-modes within the standard model and in the Appelquist-Cheng …

In the SUSY SO (10) GUT context, we study the exclusive processes B→K^(*)l^+l^-(l=μ,τ).
Using the Wilson coefficients of the relevant operators including the new operators …