Measurements of the Angular Distributions in the Decays B -> K(*) mu+ mu- at CDF

TL;DR

This paper reports precise measurements of angular distributions and asymmetries in B meson decays to K(*) mu+ mu-, providing new insights into their polarization and CP-violation characteristics at the Tevatron.

Contribution

First-time measurements of AT(2) and Aim asymmetries in B -> K(*) mu+ mu- decays at CDF, enhancing understanding of decay dynamics and CP violation.

Findings

Measured AT(2) and Aim asymmetries for the first time.

Results are among the most precise to date.

Findings are consistent with other experimental results.

Abstract

We reconstruct the decays B -> K(*) mu+ mu- and measure their angular distributions in ppbar collisions at sqrt{s}=1.96TeV using a data sample corresponding to an integrated luminosity of 6.8fb-1. The transverse polarization asymmetry AT(2) and the time-reversal-odd charge-and-parity asymmetry Aim are measured for the first time, together with the K* longitudinal polarization fraction FL and the muon forward-backward asymmetry AFB, for the decays B0 -> K*0 mu+ mu- and B+ -> K*+ mu+ mu-. Our results are among the most accurate to date and consistent with those from other experiments.