B Hadron Production and b-bbar Correlations in Z0 Decays at SLD

TL;DR

This paper reports on measurements of B hadron production, b-bbar correlations, and gluon splitting into b-bbar pairs in Z0 decays, using data from the SLD experiment with an upgraded vertex detector.

Contribution

It provides the final measurement of gluon splitting into b-bbar, an improved B quark fragmentation function, and the first energy correlation measurement between leading B hadrons in Z0 decays.

Findings

Measured gluon splitting rate into b-bbar pairs.

Improved the B quark fragmentation function accuracy.

First measurement of B hadron energy correlation in Z0 decays.

Abstract

We present results of three SLD analyses: our final determination of the rate of gluon splitting into b-bbar, an improved measurement of the inclusive b quark fragmentation function in Z0 decays, and a preliminary first measurement of the energy correlation between the two leading B hadrons in Z0 decays. Our results are obtained using hadronic \z0decays produced in e+e- annihilations at the Stanford Linear Collider (SLC) between 1996 and 1998 and collected in the SLC Large Detector (SLD). In this period, we used an upgraded vertex detector with wide acceptance and excellent impact parameter resolution, thus improving considerably our tagging capability for low-energy B hadrons.