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Title: | Search for pair production of vector-like quarks in leptonic final states in proton-proton collisions at √<i>s</i> = 13 TeV |
Other Titles: | Search for pair production of vector-like quarks in leptonic final states in proton-proton collisions at $\sqrt{s}$ = 13 TeV |
Authors: | Tumasyan, A Adam, W Andrejkovic, JW Bergauer, T Chatterjee, S Damanakis, K Dragicevic, M Escalante Del Valle, A Hussain, PS Jeitler, M Krammer, N Lemaitre, V Mondal, K Taliercio, A Tran, TT Vischia, P Wertz, S Alves, GA Coelho, E Hensel, C Moraes, A Rebello Teles, P Aldá Júnior, WL Alves Gallo Pereira, M Barroso Ferreira Filho, M Brandao Malbouisson, H Reid, ID Carvalho, W Chinellato, J Da Costa, EM Kyberd, P Da Silveira, GG De Jesus Damiao, D Khan, A Dos Santos Sousa, V Cole, JE Coldham, K Lechner, L Liko, D Mikulec, I Paulitsch, P Pitters, FM Schieck, J Schöfbeck, R Schwarz, D Templ, S Waltenberger, W Wulz, CE Darwish, MR Janssen, T Kello, T Rejeb Sfar, H Van Mechelen, P Bols, ES D’Hondt, J De Moor, A Delcourt, M El Faham, H Lowette, S Moortgat, S Morton, A Müller, D Sahasransu, AR Tavernier, S Van Doninck, W Vannerom, D Clerbaux, B De Lentdecker, G Favart, L Hohov, D Jaramillo, J Lee, K Mahdavikhorrami, M Makarenko, I Malara, A Paredes, S Pétré, L Postiau, N Thomas, L Vanden Bemden, M Vander Velde, C Vanlaer, P Dobur, D Knolle, J Lambrecht, L Mestdach, G Niedziela, M Rendón, C Roskas, C Samalan, A Skovpen, K Tytgat, M Van Den Bossche, N Vermassen, B Wezenbeek, L Benecke, A Bruno, G Bury, F Caputo, C David, P Delaere, C Donertas, IS Giammanco, A Jaffel, K Jain, S |
Keywords: | beyond standard model;hadron-hadron scattering;heavy quark production |
Issue Date: | 3-Jul-2023 |
Publisher: | Springer Nature on behalf of SISSA |
Citation: | Tumasyan, A. et al. for the benefit of (2023) 'Search for pair production of vector-like quarks in leptonic final states in proton-proton collisions at √<i>s</i> = 13 TeV', Journal of High Energy Physics, 2023 (7), , pp. 1 - 61. doi: 10.1007/JHEP07(2023)020. |
Abstract: | A search is presented for vector-like T and B quark-antiquark pairs produced in proton-proton collisions at a center-of-mass energy of 13 TeV. Data were collected by the CMS experiment at the CERN LHC in 2016-2018, with an integrated luminosity of 138 fb^{−1}. Events are separated into single-lepton, same-sign charge dilepton, and multilepton channels. In the analysis of the single-lepton channel a multilayer neural network and jet identification techniques are employed to select signal events, while the same-sign dilepton and multilepton channels rely on the high-energy signature of the signal to distinguish it from standard model backgrounds. The data are consistent with standard model background predictions, and the production of vector-like quark pairs is excluded at 95% confidence level for T quark masses up to 1.54 TeV and B quark masses up to 1.56 TeV, depending on the branching fractions assumed, with maximal sensitivity to decay modes that include multiple top quarks. The limits obtained in this search are the strongest limits to date for TT¯ production, excluding masses below 1.48 TeV for all decays to third generation quarks, and are the strongest limits to date for BB¯ production with B quark decays to tW. |
Description: | A preprint version of the article is available at arXiv:2209.07327v2 [hep-ex], https://arxiv.org/abs/2209.07327v2 . Comments: Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at https://cms-results.web.cern.ch/cms-results/public-results/publications/B2G-20-011 (CMS Public Pages). Report number: CMS-B2G-20-011, CERN-EP-2022-175. |
URI: | https://bura.brunel.ac.uk/handle/2438/28883 |
DOI: | https://doi.org/10.1007/JHEP07(2023)020 |
ISSN: | 1126-6708 |
Other Identifiers: | ORCiD: A. Tumasyan https://orcid.org/0009-0000-0684-6742 ORCiD: Joanne E. Cole https://orcid.org/0000-0001-5638-7599 ORCiD: Akram Khan https://orcid.org/0000-0002-4597-4402 ORCiD: Paul Kyberd https://orcid.org/0000-0002-7353-7090 ORCiD: Ivan D. Reid https://orcid.org/0000-0002-9235-779X ORCiD: Liliana Teodorescu https://orcid.org/0000-0002-6974-6201 CMS-B2G-20-011 CERN-EP-2022-175 arXiv:2209.07327v2 [hep-ex] 20 |
Appears in Collections: | Dept of Electronic and Electrical Engineering Research Papers |
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