Observation of $B^+ \to \chi_{c0} K^+ $

TL;DR

This paper reports the first observation of the decay mode B+ to chi_c0 K+ using data from the Belle detector, measuring its branching fraction with statistical and systematic uncertainties.

Contribution

It presents the first experimental evidence for the decay B+ to chi_c0 K+ and measures its branching fraction, expanding understanding of B meson decay channels.

Findings

First observation of B+ to chi_c0 K+ decay

Measured branching fraction: (8.0^{+2.7}_{-2.4} ext{(stat)} ext{±} 1.0 ext{(syst)} ext{±} 1.1 ext{(branching fraction)}) imes 10^{-4}

Data collected: 21.3 fb^{-1} at Belle detector

Abstract

We report the first observation of the decay $B^+ \to \chi_{c0} K^+$ using 21.3 fb$^{-1}$ of data collected by the Belle detector at the $\Upsilon$(4S) resonance. The preliminary result for the branching fraction is ${\cal{B}}(B^+\to \chi_{c0}K^+)=(8.0^{+2.7}_{-2.4}\pm 1.0\pm 1.1)\times 10^{-4}$ where the first error is statistical, the second is systematic, and the third comes from the uncertainty in the $\chi_{c0}\to\pi^+\pi^-$ branching fraction.