Final-state interactions in the decays $B^0\to\chi_{c0}K^{*0}$ and $B^+ \to \chi_{c0}K^{*+}$

TL;DR

This paper investigates the final-state rescattering effects in specific B meson decays, revealing that corrections vanish under SU(3) symmetry and highlighting challenges in matching experimental data without fine-tuning.

Contribution

It provides a detailed analysis of rescattering effects in B decays and demonstrates the conditions under which these corrections are nullified by symmetry principles.

Findings

Rescattering corrections are zero in the SU(3) limit.

Heavy quark symmetry justifies the zero corrections.

Experimental data cannot be easily explained without fine-tuning.

Abstract

In this article, we study the final-state rescattering effects in the decays $B^0\to \chi_{c0}K^{*0}$ and $B^+ \to \chi_{c0}K^{*+}$, and observe the corrections are zero in the SU(3) limit, which is warranted by the heavy quark symmetry. It is difficult to accommodate the experimental data without fine-tuning.