Analysis of the decay $B^0 \to \chi_{c1} \pi^0$ with light-cone QCD sum rules

TL;DR

This paper calculates the nonfactorizable soft hadronic contributions to the decay $B^0 o hi_{c1} ^0$ using light-cone QCD sum rules, showing significant effects and a branching ratio close to experimental measurements.

Contribution

It introduces a detailed calculation of nonfactorizable effects in $B^0$ decay using light-cone QCD sum rules, highlighting their importance.

Findings

Nonfactorizable contributions are significant and cannot be neglected.

Calculated branching ratio is marginally consistent with experimental data.

Light-cone QCD sum rules effectively estimate soft hadronic effects.

Abstract

In this article, we calculate the contribution from the nonfactorizable soft hadronic matrix element to the decay $B^0\to \chi_{c1} \pi^0$ with the light-cone QCD sum rules. The numerical results show that its contribution is rather large and should not be neglected. The total amplitudes lead to a branching fraction which is in agreement with the experimental data marginally.