Measurement of single top-quark production in the s-channel in proton–proton collisions at $ \sqrt{s} $ = 13 TeV with the ATLAS detector - INSPIRE

Measurement of single top-quark production in the s-channel in proton–proton collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector

ATLAS

Collaboration

Sep 19, 2022

26 pages

Published in:

JHEP 06 (2023) 191

Published: Jun 27, 2023

e-Print:

2209.08990 [hep-ex]

DOI:

10.1007/JHEP06(2023)191

PDG: s-channel Single

{{\mathit t}}

Production Cross Section in

{{\mathit p}}{{\mathit p}}

\sqrt {s }

~

Report number:

CERN-EP-2022-116

Experiments:

CERN-LHC-ATLAS,
CERN-LHC-ATLAS

View in:

reference search24 citations

Citations per year

Abstract: (Springer)

A measurement of single top-quark production in the s-channel is performed in proton–proton collisions at a centre-of-mass energy of 13 TeV with the ATLAS detector at the CERN Large Hadron Collider. The dataset corresponds to an integrated luminosity of 139 fb

^{−1}

. The analysis is performed on events with an electron or muon, missing transverse momentum and exactly two b-tagged jets in the final state. A discriminant based on matrix element calculations is used to separate single-top-quark s-channel events from the main background contributions, which are top-quark pair production and W-boson production in association with jets. The observed (expected) signal significance over the background-only hypothesis is 3.3 (3.9) standard deviations, and the measured cross-section is

\sigma ={8.2}_{-2.9}^{+3.5}

pb, consistent with the Standard Model prediction of

{\sigma}^{\textrm{SM}}={10.32}_{-0.36}^{+0.40}

pb.[graphic not available: see fulltext]

Note:

26 pages in total, 7 figures, 2 tables, submitted to JHEP. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2018-04/

Hadron-Hadron Scattering
Top Physics
p p: scattering
p p: colliding beams
top: single production
top: pair production
transverse momentum: missing-energy
channel cross section: measured
ATLAS
final state: ((n)jet lepton)

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