CP Violation in B Decays at the Tevatron

TL;DR

This paper reviews the Tevatron's B physics program from 1992-1996, highlighting measurements of B hadron properties, the first CP violation parameter sin(2beta), and future prospects with upgraded detectors and increased luminosity.

Contribution

It provides the first measurement of the CP violation parameter sin(2beta) using fully reconstructed B decays at the Tevatron, and discusses future plans for precision B physics measurements.

Findings

First measurement of sin(2beta) at the Tevatron

Discovery of the B_c meson

Plans for enhanced B physics studies with upgraded detectors

Abstract

Between 1992 to 1996, the CDF and D0 detectors each collected data samples exceeding 100 pb^{-1} of p\bar{p} collisions at sqrt{s}=1.8 TeV at the Fermilab Tevatron. These data sets led to a large number of precision measurements of the properties of B hadrons including lifetimes, masses, neutral B meson flavor oscillations, and relative branching fractions, and to the discovery of the B_c meson. Perhaps the most exciting result was the first look at the CP violation parameter sin(2beta) using the world's largest sample of fully reconstructed B^0/bar{B}^0 -> J/psi K^0_S decays. A summary of this result is presented here. In the year 2000, the Tevatron will recommence p\bar{p} collisions with an over order of magnitude expected increase in integrated luminosity (1 fb^{-1} per year). The CDF and D0 detectors will have undergone substantial upgrades, particularly in the tracking detectors and the triggers. With these enhancements, the Tevatron B physics program will include precision measurements of sin(2beta) and B^0_s flavor oscillations, as well as studies of rare B decays that are sensitive to new physics. The studies of B^0_s mesons will be particularly interesting as this physics will be unique to the Tevatron during the first half of the next decade.