PoS - Proceedings of Science
Volume 414 - 41st International Conference on High Energy physics (ICHEP2022) - Strong interactions and Hadron Physics
Measurements of W and Z boson production in association with heavy flavor at ATLAS
B.Β Giacobbe* Β on behalf of the ATLAS Collaboration
Full text: pdf
Pre-published on: November 03, 2022
Published on: June 15, 2023
Standard Model measurements involving the production of 𝑍 and π‘Š bosons in association with jets
is an important part of the ATLAS physics program at the LHC. The measurement of integrated
and differential production cross sections constitutes a powerful tool to test our understanding of
the Monte Carlo generators and of the hadronization processes, as well as a way to explore the
initial state of the proton-proton interaction. In these proceedings, a recent ATLAS measurement
of the associated production of the 𝑍-boson with a high-𝑝T (boosted) jet is described, both flavor inclusive
and with 𝑏-quark tagging of the jet. The measurement is performed using proton-proton
collisions at βˆšπ‘  = 13 TeV at the LHC with an integrated luminosity of 36 fbβˆ’1 acquired by
the ATLAS detector during Run-2. A discussion of the results and their complementarity with
a previous measurement of the associated production of the 𝑍-boson with 𝑏-tagged jets in the
resolved regime is given. Particular emphasis is devoted to the discussion of the modeling issues
affecting the flavor-inclusive selection and of the ability of the experimental results obtained with
the 𝑏-tag selection to discriminate among models implementing different flavor-number schemes
to describe the initial state of the interaction.
DOI: https://doi.org/10.22323/1.414.0798
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