Production of charged $\pi$-mesons in exclusive $B_{c}\to V(P)+n\pi$ decays

TL;DR

This paper calculates the branching fractions and invariant mass distributions for exclusive B_c-meson decays producing heavy quarkonia and five charged pions, using form factors and spectral functions.

Contribution

It provides new theoretical predictions for branching ratios and mass distributions in B_c decays involving multiple pions and heavy quarkonia.

Findings

Branching fractions for B_c decays to J/ψ or B_s with 5 pions are estimated.

Invariant mass distributions of the 5-pion system are presented.

Theoretical predictions can guide future experimental measurements.

Abstract

The paper is devoted to vector or pseudoscalar heavy quarkonia production J/\psi, \psi(2S), B_{s} or B_s^* in association with five charged \pi-mesons in exclusive B_c-meson decays. Using available formfactors parameterizations and spectral functions of $W \to 5 \pi$ transition we obtain branching fractions of these decays and distributions over invariant mass of (5\pi)-system.