Form factors and branching ratios of the FCNC $B \to a_1 \ell^{+}\ell^{-}$ decays

TL;DR

This paper calculates the form factors and branching ratios of rare semileptonic B to a1 meson decays involving flavor-changing neutral currents using three-point QCD sum rules within the Standard Model.

Contribution

It provides new theoretical predictions for form factors and branching ratios of B to a1 transitions, considering quark condensate effects, within the QCD sum rules framework.

Findings

Calculated form factors for B to a1 transitions.

Predicted branching ratios for B to a1 l+ l- decays.

Analyzed the impact of quark condensates on decay properties.

Abstract

We analyze the semileptonic $B \to a_1 \ell^+\ell^-$, $\ell=\tau, \mu, e$ transitions in the frame work of the three-point QCD sum rules in the standard model. These rare decays governed by flavor-changing neutral current transition of $b \to d$. Considering the quark condensate contributions, the relevant form factors as well as the branching fractions of these transitions are calculated.