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Measurement of inclusive and differential cross sections for single top quark production in association with a W boson in proton-proton collisions at $$ \sqrt{s} $$ = 13 TeV

A. TumasyanYerevan Physics Institute, Yerevan, ArmeniaW. AdamInstitut für Hochenergiephysik, Vienna, AustriaJanik Walter AndrejkovicInstitut für Hochenergiephysik, Vienna, AustriaT. BergauerInstitut für Hochenergiephysik, Vienna, AustriaS. ChatterjeeInstitut für Hochenergiephysik, Vienna, AustriaK. DamanakisInstitut für Hochenergiephysik, Vienna, AustriaM. DragicevicInstitut für Hochenergiephysik, Vienna, AustriaA. Escalante Del ValleInstitut für Hochenergiephysik, Vienna, AustriaPriya Sajid HussainInstitut für Hochenergiephysik, Vienna, AustriaM. JeitlerInfinis de Lyon (IP2I ), Villeurbanne, FranceNatascha KrammerInstitut für Hochenergiephysik, Vienna, AustriaL. LechnerInstitut für Hochenergiephysik, Vienna, AustriaD. LikoInstitut für Hochenergiephysik, Vienna, AustriaI. MikulecInstitut für Hochenergiephysik, Vienna, AustriaP. PaulitschInstitut für Hochenergiephysik, Vienna, AustriaF. M. PittersInstitut für Hochenergiephysik, Vienna, AustriaJ. SchieckInfinis de Lyon (IP2I ), Villeurbanne, FranceR. SchöfbeckInstitut für Hochenergiephysik, Vienna, AustriaD. SchwarzInstitut für Hochenergiephysik, Vienna, AustriaS. TemplInstitut für Hochenergiephysik, Vienna, AustriaW. WaltenbergerInstitut für Hochenergiephysik, Vienna, AustriaC.-E. WulzInstitut für Hochenergiephysik, Vienna, AustriaM. R. DarwishUniversiteit Antwerpen, Antwerpen, BelgiumX. JanssenUniversiteit Antwerpen, Antwerpen, BelgiumT. KelloUniversiteit Antwerpen, Antwerpen, BelgiumHaifa Rejeb SfarUniversiteit Antwerpen, Antwerpen, BelgiumP. Van MechelenUniversiteit Antwerpen, Antwerpen, BelgiumE. S. BolsVrije Universiteit Brussel, Brussel, BelgiumJ. D’HondtVrije Universiteit Brussel, Brussel, BelgiumA. De MoorVrije Universiteit Brussel, Brussel, BelgiumM. DelcourtVrije Universiteit Brussel, Brussel, BelgiumH. El FahamVrije Universiteit Brussel, Brussel, BelgiumS. LowetteVrije Universiteit Brussel, Brussel, BelgiumS. MoortgatVrije Universiteit Brussel, Brussel, BelgiumA. MortonVrije Universiteit Brussel, Brussel, BelgiumD. MüllerVrije Universiteit Brussel, Brussel, BelgiumA. R. SahasransuVrije Universiteit Brussel, Brussel, BelgiumS. TavernierVrije Universiteit Brussel, Brussel, BelgiumW. Van DoninckVrije Universiteit Brussel, Brussel, BelgiumD. VanneromVrije Universiteit Brussel, Brussel, BelgiumB. ClerbauxUniversité Libre de Bruxelles, Bruxelles, BelgiumG. De LentdeckerUniversité Libre de Bruxelles, Bruxelles, BelgiumL. FavartUniversité Libre de Bruxelles, Bruxelles, BelgiumD. HohovUniversité Libre de Bruxelles, Bruxelles, BelgiumJ. JaramilloUniversité Libre de Bruxelles, Bruxelles, BelgiumK. LeeUniversité Libre de Bruxelles, Bruxelles, BelgiumM. MahdavikhorramiUniversité Libre de Bruxelles, Bruxelles, BelgiumI. MakarenkoUniversité Libre de Bruxelles, Bruxelles, BelgiumA. MalaraUniversité Libre de Bruxelles, Bruxelles, BelgiumS. ParedesUniversité Libre de Bruxelles, Bruxelles, BelgiumL. PétréUniversité Libre de Bruxelles, Bruxelles, BelgiumN. PostiauUniversité Libre de Bruxelles, Bruxelles, BelgiumLaurent ThomasUniversité Libre de Bruxelles, Bruxelles, BelgiumM. Vanden BemdenUniversité Libre de Bruxelles, Bruxelles, BelgiumC. Vander VeldeUniversité Libre de Bruxelles, Bruxelles, BelgiumP. VanlaerUniversité Libre de Bruxelles, Bruxelles, BelgiumD. DoburGhent University, Ghent, BelgiumJ. KnolleGhent University, Ghent, BelgiumLuka LambrechtGhent University, Ghent, BelgiumG. MestdachGhent University, Ghent, BelgiumM. NiedzielaGhent University, Ghent, BelgiumCésar RendónGhent University, Ghent, BelgiumC. RoskasGhent University, Ghent, BelgiumA. SamalanGhent University, Ghent, BelgiumK. SkovpenGhent University, Ghent, BelgiumM. TytgatGhent University, Ghent, BelgiumN. Van Den BosscheGhent University, Ghent, BelgiumB. VermassenGhent University, Ghent, BelgiumLiam WezenbeekGhent University, Ghent, BelgiumA. BeneckeUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumG. BrunoUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumF. BuryUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumC. CaputoUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumP. DavidUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumC. DelaereUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumI. S. DonertasUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumA. GiammancoUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumK. JaffelUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumSa. JainUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumV. Lemaı̂treUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumK. MondalUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumA. TaliercioUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumT. T. TranUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumP. VischiaUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumS. WertzUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumG. A. AlvesCentro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, BrazilE. CoelhoCentro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, BrazilC. HenselCentro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, BrazilA. MoraesCentro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, BrazilP. Rebello TelesCentro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, BrazilW. L. Aldá JúniorUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, BrazilM. Alves Gallo PereiraUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, BrazilM. Barroso Ferreira FilhoUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, BrazilH. Brandao MalbouissonUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, BrazilW. CarvalhoUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, BrazilJ. ChinellatoUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, BrazilE. M. Da CostaUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, BrazilG. G. Da SilveiraUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, BrazilD. De Jesus DamiãoUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, BrazilV. Dos Santos SousaUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil

Journal of High Energy Physicsjournal2023en

ABI

Annotatsiya

A bstract Measurements of the inclusive and normalised differential cross sections are presented for the production of single top quarks in association with a W boson in proton-proton collisions at a centre-of-mass energy of 13 TeV. The data used were recorded with the CMS detector at the LHC during 2016–2018, and correspond to an integrated luminosity of 138 fb − 1 . Events containing one electron and one muon in the final state are analysed. For the inclusive measurement, a multivariate discriminant, exploiting the kinematic properties of the events is used to separate the signal from the dominant $$ \textrm{t}\overline{\textrm{t}} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>t</mml:mi> <mml:mover> <mml:mi>t</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> </mml:math> background. A cross section of $$ 79.2\pm 0.9{\left(\textrm{stat}\right)}_{-8.0}^{+7.7}\left(\textrm{syst}\right)\pm 1.2\left(\textrm{lumi}\right) $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mn>79.2</mml:mn> <mml:mo>±</mml:mo> <mml:mn>0.9</mml:mn> <mml:msubsup> <mml:mfenced> <mml:mtext>stat</mml:mtext> </mml:mfenced> <mml:mrow> <mml:mo>−</mml:mo> <mml:mn>8.0</mml:mn> </mml:mrow> <mml:mrow> <mml:mo>+</mml:mo> <mml:mn>7.7</mml:mn> </mml:mrow> </mml:msubsup> <mml:mfenced> <mml:mtext>syst</mml:mtext> </mml:mfenced> <mml:mo>±</mml:mo> <mml:mn>1.2</mml:mn> <mml:mfenced> <mml:mtext>lumi</mml:mtext> </mml:mfenced> </mml:math> pb is obtained, consistent with the predictions of the standard model. For the differential measurements, a fiducial region is defined according to the detector acceptance, and the requirement of exactly one jet coming from the fragmentation of a bottom quark. The resulting distributions are unfolded to particle level and agree with the predictions at next-to-leading order in perturbative quantum chromodynamics.

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Mavzular

Particle physics theoretical and experimental studies High-Energy Particle Collisions Research Quantum Chromodynamics and Particle Interactions

Identifikatorlar

DOI: 10.1007/jhep07(2023)046

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