Measurement of the B0 -> K2*(1430)0 gamma and B+ -> K2*(1430)+ gamma branching fractions

TL;DR

This paper reports measurements of the branching fractions and CP asymmetry for specific radiative B meson decays to K2*(1430) using data from the BaBar detector, providing insights into rare decay processes.

Contribution

First measurement of branching fractions and CP asymmetry for B0 and B+ decays to K2*(1430) gamma with detailed experimental analysis.

Findings

BR(B0 -> K2*(1430)0 gamma) = (1.22 +- 0.25 +- 0.10) x 10^(-5)

BR(B+ -> K2*(1430)+ gamma) = (1.45 +- 0.40 +- 0.15) x 10^(-5)

ACP(B0 -> K2*(1430)0 gamma) = -0.08 +- 0.15 +- 0.01

Abstract

We have investigated the exclusive, radiative B meson decays to K2*(1430) in 89* 10^6 BBbar events with the BaBar detector at the PEP-II storage ring. We measure the branching fractions BR(B0 -> K2*(1430)0 gamma) = (1.22 +-0.25 +-0.10)*10^(-5) and BR(B+ -> K2*(1430)+ gamma) = (1.45 +-0.40 +-0.15) * 10^(-5), where the first error is statistical and the second systematic. In addition, we measure the CP-violating asymmetry ACP(B0 -> K2*(1430)0 gamma) = -0.08 +- 0.15 +- 0.01.