Электронный каталог

Статья

Aad, G.
A Measurement of the High-Mass *t*t^- Production Cross-Section at *%s=13 TeV with the ATLAS Detector and Constraints on New Particles and Couplings / G.Aad, F.Ahmadov, I.N.Aleksandrov, V.A.Bednyakov, I.R.Boyko, G.Chelkov, A.Cheplakov, M.V.Chizhov, D.V.Dedovich, M.Demichev, A.R.Didenko, M.I.Gostkin, S.N.Karpov, Z.M.Karpova, U.Kruchonak, V.Kukhtin, Y.Kulchitsky, E.Ladygin, V.Lyubushkin, T.Lyubushkina, S.Malyukov, M.Mineev, E.Plotnikova, I.N.Potrap, N.A.Rusakovich, M.Shiyakova, A.Soloshenko, A.Tropina, P.V.Tsiareshka, T.Turtuvshin, A.Vasyukov, I.Yeletskikh, A.Zhemchugov, N.I.Zimine, [ATLAS Collab.]. – Text : electronic // Journal of High Energy Physics. – 2025. – Vol. 2025, No. 10. – P. 054. – URL: https://doi.org/10.1007/JHEP10(2025)054. – Bibliogr.: 146.

The production cross-section of high-mass τ -lepton pairs is measured as a function of the dilepton visible invariant mass, using 140 fb&sup(−1) of √s =13 TeV proton-proton collision data recorded with the ATLAS detector at the Large Hadron Collider. The measurement agrees with the predictions of the Standard Model. A ft to the invariant mass distribution is performed as a function of b-jet multiplicity, to constrain the non-resonant production of new particles described by an efective feld theory or in models containing leptoquarks or Z ′ bosons that couple preferentially to third-generation fermions. The constraints on new particles improve on previous results, and the constraints on effective operators include those affecting the anomalous magnetic moment of the τ -lepton.



ОИЯИ = ОИЯИ (JINR)2025