The first search is presented for vector-like leptons (VLLs) in the context of the "4321 model", an ultraviolet-complete model with the potential to explain existing B physics measurements that are in tension with standard model predictions. The analyzed data, corresponding to an integrated luminosity of 96.5 fb-1, were recorded in 2017 and 2018 with the CMS detector at the LHC in proton-proton collisions at root s = 13 TeV. Final states with >= 3 b-tagged jets and two third-generation leptons (tau tau, tau nu tau, or nu tau nu tau) are considered. Upper limits are derived on the VLL production cross section in the VLL mass range 500-1050 GeV. The maximum likelihood fit prefers the presence of signal at the level of 2.8 standard deviations, for a representative VLL mass point of 600 GeV. As a consequence, the observed upper limits are approximately double the expected limits. (c) 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons .org /licenses /by /4 .0/). Funded by SCOAP3.

Search for pair-produced vector-like leptons in final states with third-generation leptons and at least three b quark jets in proton-proton collisions at √s = 13 TeV / Tumasyan, A., Adam, W., Andrejkovic, J.W., Bergauer, T., Chatterjee, S., Damanakis, K., Dragicevic, M., Escalante Del Valle, A., Hussain, P.S., Jeitler, M., Krammer, N., Lechner, L., Liko, D., Mikulec, I., Paulitsch, P., Pitters, F.M., Schieck, J., Schöfbeck, R., Schwarz, D., Templ, S., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 846:(2023), pp. 1-29. [10.1016/j.physletb.2023.137713]

Search for pair-produced vector-like leptons in final states with third-generation leptons and at least three b quark jets in proton-proton collisions at √s = 13 TeV

Del Re, D.;Organtini, G.;Paramatti, R.;Quaranta, C.;Rahatlou, S.;Santanastasio, F.;
2023

Abstract

The first search is presented for vector-like leptons (VLLs) in the context of the "4321 model", an ultraviolet-complete model with the potential to explain existing B physics measurements that are in tension with standard model predictions. The analyzed data, corresponding to an integrated luminosity of 96.5 fb-1, were recorded in 2017 and 2018 with the CMS detector at the LHC in proton-proton collisions at root s = 13 TeV. Final states with >= 3 b-tagged jets and two third-generation leptons (tau tau, tau nu tau, or nu tau nu tau) are considered. Upper limits are derived on the VLL production cross section in the VLL mass range 500-1050 GeV. The maximum likelihood fit prefers the presence of signal at the level of 2.8 standard deviations, for a representative VLL mass point of 600 GeV. As a consequence, the observed upper limits are approximately double the expected limits. (c) 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons .org /licenses /by /4 .0/). Funded by SCOAP3.
2023
CMS; vector-like leptons; VLL
01 Pubblicazione su rivista::01a Articolo in rivista
Search for pair-produced vector-like leptons in final states with third-generation leptons and at least three b quark jets in proton-proton collisions at √s = 13 TeV / Tumasyan, A., Adam, W., Andrejkovic, J.W., Bergauer, T., Chatterjee, S., Damanakis, K., Dragicevic, M., Escalante Del Valle, A., Hussain, P.S., Jeitler, M., Krammer, N., Lechner, L., Liko, D., Mikulec, I., Paulitsch, P., Pitters, F.M., Schieck, J., Schöfbeck, R., Schwarz, D., Templ, S., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 846:(2023), pp. 1-29. [10.1016/j.physletb.2023.137713]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1720448
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