Measurement of Charm and Beauty Jets in Deep Inelastic Scattering at HERA

TL;DR

This paper reports measurements of charm and beauty jet production in deep inelastic scattering at HERA, comparing experimental data with QCD predictions to enhance understanding of heavy flavor dynamics.

Contribution

It provides new measurements of charm and beauty jet cross sections in DIS at HERA, utilizing vertex detector techniques for heavy flavor identification.

Findings

Measured charm and beauty jet cross sections in specified kinematic regions.

Data agree with QCD predictions within uncertainties.

Improves heavy flavor identification methods in DIS experiments.

Abstract

Measurements of cross sections for events with charm and beauty jets in deep inelastic scattering at HERA are presented. Events with jets of transverse energy E_T^jet > 6 GeV and pseudorapidity -1.0 < eta^jet < 1.5 in the laboratory frame are selected in the kinematic region of photon virtuality Q^2 > 6 GeV^2 and inelasticity variable 0.07 < y < 0.625. Measurements are also made requiring a jet in the Breit frame with E_T^*jet > 6 GeV. The data were collected with the H1 detector in the years 2006 and 2007 corresponding to an integrated luminosity of 189 pb^-1. The numbers of charm and beauty jets are determined using variables reconstructed using the H1 vertex detector with which the impact parameters of the tracks to the primary vertex and the position of secondary vertices are measured. The measurements are compared with QCD predictions and with previous measurements where heavy flavours are identified using muons.