作者
Armen Tumasyan, Wolfgang Adam, Janik Walter Andrejkovic, Thomas Bergauer, Suman Chatterjee, Konstantinos Damanakis, Marko Dragicevic, A Escalante Del Valle, Priya Sajid Hussain, Manfred Jeitler, Natascha Krammer, Lukas Lechner, Dietrich Liko, Ivan Mikulec, Peter Paulitsch, Jochen Schieck, Robert Schöfbeck, Dennis Schwarz, Mangesh Sonawane, Sebastian Templ, Wolfgang Waltenberger, C-E Wulz, Mohamed Rashad Darwish, Tahys Janssen, Tomas Kello, H Rejeb Sfar, Pierre Van Mechelen, Emil Sørensen Bols, Jorgen d'Hondt, Alexandre De Moor, Martin Delcourt, Hesham El Faham, Steven Lowette, Alexander Morton, Denise Müller, Abanti Ranadhir Sahasransu, Stefaan Tavernier, Walter Van Doninck, Senne Van Putte, David Vannerom, Barbara Clerbaux, Soumya Dansana, Gilles De Lentdecker, Laurent Favart, Dmytro Hohov, Johny Jaramillo, Kyeongpil Lee, Mostafa Mahdavikhorrami, Inna Makarenko, Andrea Malara, Santiago Paredes, Laurent Pétré, Nicolas Postiau, Laurent Thomas, M Vanden Bemden, C Vander Velde, P Vanlaer, Didar Dobur, Joscha Knolle, Luka Lambrecht, Gianny Mestdach, C Rendón, A Samalan, K Skovpen, M Tytgat, N Van Den Bossche, B Vermassen, L Wezenbeek, A Benecke, G Bruno, F Bury, C Caputo, P David, C Delaere, IS Donertas, A Giammanco, K Jaffel, Sa Jain, V Lemaitre, K Mondal, A Taliercio, TT Tran, P Vischia, S Wertz, GA Alves, E Coelho, C Hensel, A Moraes, P Rebello Teles, WL Aldá Júnior, M Alves Gallo Pereira, M Barroso Ferreira Filho, H Brandao Malbouisson, W Carvalho, J Chinellato, EM Da Costa, GG Da Silveira, D De Jesus Damiao, V Dos Santos Sousa, S Fonseca De Souza, J Martins, C Mora Herrera, K Mota Amarilo, L Mundim, H Nogima, A Santoro, SM Silva Do Amaral, A Sznajder, M Thiel, A Vilela Pereira, CA Bernardes, L Calligaris, TR Fernandez Perez Tomei, EM Gregores, PG Mercadante, SF Novaes, Sandra S Padula, A Aleksandrov, G Antchev, R Hadjiiska, P Iaydjiev, M Misheva, M Rodozov, M Shopova, G Sultanov, A Dimitrov, T Ivanov, L Litov, B Pavlov, P Petkov, A Petrov, E Shumka, S Thakur, T Cheng, Q Guo, T Javaid, M Mittal, L Yuan, M Ahmad, G Bauer, Z Hu, S Lezki, K Yi, GM Chen, HS Chen, M Chen, F Iemmi, CH Jiang, A Kapoor, H Liao
发表日期
2023/9/10
期刊
Physics Letters B
卷号
844
页码范围
138076
出版商
North-Holland
简介
The production of four top quarks (t t¯ t t¯) is studied with LHC proton-proton collision data samples collected by the CMS experiment at a center-of-mass energy of 13 TeV, and corresponding to integrated luminosities of up to 138 fb− 1. Events that have no leptons (all-hadronic), one lepton, or two opposite-sign leptons (where lepton refers only to prompt electrons or prompt muons) are considered. This is the first t t¯ t t¯ measurement that includes the all-hadronic final state. The observed significance of the t t¯ t t¯ signal in these final states of 3.9 standard deviations (1.5 expected) provides evidence for t t¯ t t¯ production, with a measured cross section of 36− 11+ 12 fb. Combined with earlier CMS results in other final states, the signal significance is 4.0 standard deviations (3.2 expected). The combination returns an observed cross section of 17±4 (stat)±3 (syst) fb, which is consistent with the standard model prediction.
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