Physics Results from SLD Using the CRID

TL;DR

This paper reviews Z^0 physics results from SLD using the Cherenkov Ring Imaging Detector, highlighting particle identification techniques and their application to measurements of hadronization, B-hadron decays, and jet tagging for precision tests of the Standard Model.

Contribution

It introduces the use of the CRID detector for detailed particle identification and demonstrates its impact on various precision measurements in Z^0 physics.

Findings

Precise measurements of B^0-B^0bar mixing.

Determination of asymmetries A_b, A_c, and A_s.

Enhanced particle tagging purity from CRID data.

Abstract

We review recent Z^0 physics results from SLD that use the Cherenkov Ring Imaging Detector for charged particle identification. The performance of the detector and likelihood method are described briefly. Several hadronization measurements are presented, including identified hadron production in events of different primary flavors, leading hadron production, and new correlation studies sensitive to details of both leading and nonleading hadron production. Identified K^+- have been used in conjunction with precision vertexing to study charmless and doubly charmed B-hadron decays. This combination has also been used to tag b, b-bar, c and c-bar jets, yielding precise measurements of B^0-B^0bar mixing and of the asymmetric couplings A_b and A_c. Identified K^+- and Lambda^0 have been used to tag s and s-bar jets, yielding a measurement of A_s. The clean identified particle samples provided efficiently by the CRID allow the purities of these tags to be measured from the data, an essential ingredient for precision physics.