Flavor Tagging and CP-Violation Measurements at the Tevatron

TL;DR

This paper discusses the adaptation and calibration of flavor tagging techniques at the Tevatron, used to measure CP violation parameters in B meson decays, with prospects for future improvements.

Contribution

It introduces new flavor tagging methods calibrated with Tevatron data and applies them to measure CP violation in B meson decays.

Findings

Successful calibration of tagging algorithms using Tevatron data

Measurement of sin(2 Beta) in B0 decays

Discussion of future measurement prospects

Abstract

The CDF Collaboration has adapted several heavy flavor tagging techniques and employed them in analyses of time-dependent flavor asymmetries using data from the Tevatron Run I. The tagging algorithms were calibrated using low-P_t inclusive lepton and dilepton trigger data samples. The tagging techniques were applied to a sample of \sim 400 B^0_d/B-bar^0_d -> J/psi K^0_s decays and were used to measure the CP violation parameter, sin(2 Beta). Prospects for future improved measurements of the CP violation parameters at the Tevatron are briefly discussed.