Rare B decays and direct CP violation at BABAR

TL;DR

This paper reports on measurements of rare B meson decays and direct CP violation at BABAR, providing new data on branching fractions and asymmetries that test the Standard Model and search for new physics.

Contribution

It presents the first comprehensive set of measurements of various rare B decay modes and CP asymmetries using data from BABAR, enhancing understanding of CP violation and flavor physics.

Findings

Observed significant signals in B+ to K*0(892)pi+ and other decay modes.

Measured direct CP asymmetries in several B decay channels.

Provided branching fractions and polarization data for multiple rare B decays.

Abstract

The search for rare B decays and direct CP violation at BABAR is described. The following measurements (based on integrated luminosities ranging from 56.4 to 81.9fb-1) are summarized: the inclusive branching fractions and direct CP asymmetries of B+ to h+h-h+ (h=pi, K), the exclusive branching fractions of B+ to K+pi-pi+ (where significant signals are observed in the B+ to K*0(892)pi+, B+ to f0(980)K+, B+ to chic0 K+, B+ to Dbar0 pi+ and B^+ to higher K*0 pi+ channels), the branching fractions of B+ to rho0rho+ and B+ to rho0 K*+, and finally, the branching fractions, the longitudinal components, and the direct CP asymmetries in B to phi K*.