Электронный каталог

Статья

Aad, G.
Measurement of Single Top-Quark Production in Association with a W Boson in pp Collisions at *%s=13 TeV with the ATLAS Detector / G.Aad, F.Ahmadov, I.N.Aleksandrov, V.A.Bednyakov, I.R.Boyko, I.A.Budagov, G.Chelkov, A.Cheplakov, M.V.Chizhov, D.V.Dedovich, M.Demichev, A.Gongadze, M.I.Gostkin, S.N.Karpov, Z.M.Karpova, E.Ladygin, V.Lyubushkin, T.Lyubushkina, S.Malyukov, M.Mineev, E.Plotnikova, I.N.Potrap, M.Shiyakova, A.Soloshenko, S.Turchikhin, T.Turtuvshin, I.Yeletskikh, A.Zhemchugov, N.I.Zimine, Y.Kulchitsky, [ATLAS Collab.] // Physical Review D [Electronic resource]. – 2024. – Vol. 110, No. 7. – P. 072010. – URL: https://doi.org/10.1103/PhysRevD.110.072010. – Bibliogr.: 89.

The inclusive cross section for the production of a single top quark in association with a W boson is measured using 140 fb*−*1 of proton-proton collision data collected with the ATLAS detector at *%s=13 TeV. Events containing two charged leptons and at least one jet identified as originating from a b-quark are selected. A multivariate discriminant is constructed to separate the tW signal from the t¯t background. The cross section is extracted using a profile likelihood fit to the signal and control regions and it is measured to be σ&sub(tW)=75&sup(+15)&sub(-14)pb, in good agreement with the Standard Model prediction. The measured cross section is used to extract a value for the left-handed form factor at the Wtb vertex times the Cabibbo- Kobayashi-Maskawa matrix element |f&sub(LV)V&subt(tb) of 0.97 *( 0.10.



ОИЯИ = ОИЯИ (JINR)2024