b-Jet Identification in the D0 Experiment

TL;DR

This paper discusses algorithms used in the D0 experiment to identify b-quark jets by exploiting the long lifetimes of b-hadrons and calibrating their performance with collider data.

Contribution

It introduces specific methods for b-jet identification and details their calibration using real collider data, enhancing analysis accuracy.

Findings

Effective b-jet identification algorithms developed

Calibration methods validated with collider data

Improved discrimination of b-quark jets

Abstract

Algorithms distinguishing jets originating from b quarks from other jet flavors are important tools in the physics program of the D0 experiment at the Fermilab Tevatron p-pbar collider. This article describes the methods that have been used to identify b-quark jets, exploiting in particular the long lifetimes of b-flavored hadrons, and the calibration of the performance of these algorithms based on collider data.