Associated production of a Z boson and a b-jet in ATLAS

TL;DR

This paper analyzes Z boson production with a b-jet at ATLAS to improve proton structure understanding and aid new physics searches, using full simulation data for Z decaying to mu+ mu-.

Contribution

It provides an updated analysis of Z+b-jet production with full simulation data, enhancing background understanding for new physics searches.

Findings

Refined measurement of Z+b-jet production rates.

Improved background modeling for Higgs and SUSY searches.

Reduced uncertainties in proton parton distribution functions.

Abstract

The current uncertainty on the parametrization of the partonic content of the proton (PDF's) affects the potential for the discovery of new physics at LHC. The study of Z boson production in association with a b-jet can considerably reduce such uncertainty. In addition, this process represents a background both to the search for the Higgs boson and for SUSY particles. We present an update, based on the full simulation data sample produced for the Rome Physics Workshop, of a preliminary study in the case where the Z boson decays in mu+ mu-.