Measurement of inclusive and differential cross sections of single top quark production in association with a W boson in proton-proton collisions at $ \sqrt{s} $ = 13.6 TeV - INSPIRE

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Measurement of inclusive and differential cross sections of single top quark production in association with a W boson in proton-proton collisions at $\sqrt{s}$ = 13.6 TeV

CMS

Collaboration

Sep 10, 2024

55 pages

Published in:

JHEP 01 (2025) 107

Published: Jan 21, 2025

e-Print:

2409.06444 [hep-ex]

DOI:

10.1007/JHEP01(2025)107 (publication)

Report number:

CMS-TOP-23-008,
CERN-EP-2024-184

Experiments:

CERN-LHC-CMS

View in:

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Abstract: (Springer)

The first measurement of the inclusive and normalised differential cross sections of single top quark production in association with a W boson in proton-proton collisions at a centre-of-mass energy of 13.6 TeV is presented. The data were recorded with the CMS detector at the LHC in 2022, and correspond to an integrated luminosity of 34.7 fb

^{−1}

. The analysed events contain one muon and one electron in the final state. For the inclusive measurement, multivariate discriminants exploiting the kinematic properties of the events are used to separate the signal from the dominant top quark-antiquark production background. A cross section of

82.3\pm 2.1{\left(\textrm{stat}\right)}_{-9.7}^{+9.9}\left(\textrm{syst}\right)\pm 3.3\left(\textrm{lumi}\right)

pb is obtained, consistent with the predictions of the standard model. A fiducial region is defined according to the detector acceptance to perform the differential measurements. The resulting differential distributions are unfolded to particle level and show good agreement with the predictions at next-to-leading order in perturbative quantum chromodynamics.[graphic not available: see fulltext]

Note:

All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/TOP-23-008 (CMS Public Pages)

Hadron-Hadron Scattering
Top Physics

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