First measurement of the top quark pair production cross section in proton-proton collisions at √<i>s</i>=13.6 tev
Autor(es) y otros:
; Cuevas Maestro, Francisco Javier; Fernández Menéndez, Javier; Folgueras Gómez, Santiago; González Caballero, Isidro; González Fernández, Juan Rodrigo; Tumasyan, A.; Palencia Cortezón, José Enrique; Ramón Álvarez, Clara; Rodríguez Bouza, Víctor; Soto Rodríguez, Alejandro; Trapote Fernández, Andrea; Vico Villalba, Carlos
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Abstract: The first measurement of the top quark pair (t¯t) production cross section in proton-proton collisions at √ s = 13.6 TeV is presented. Data recorded with the CMS detector at the CERN LHC in Summer 2022, corresponding to an integrated luminosity of 1.21 fb−1 , are analyzed. Events are selected with one or two charged leptons (electrons or muons) and additional jets. A maximum likelihood fit is performed in event categories defined by the number and flavors of the leptons, the number of jets, and the number of jets identified as originating from b quarks. An inclusive t¯t production cross section of 881 ± 23 (stat + syst) ± 20 (lumi) pb is measured, in agreement with the standard model prediction of 924+32 −40 pb.
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MCIN/AEI and PCTI (Spain); Individuals have received support from the Marie-Curie programme and the Euro- pean Research Council and Horizon 2020 Grant, contract Nos. 675440, 724704, 752730, 758316, 765710, 824093, 884104, and COST Action CA16108 (European Union); MCIN/AEI/10.13039/501100011033, ERDF “a way of making Europe”, and the Programa Estatal de Fomento de la Investigación Científica y Técnica de Excelencia María de Maeztu, grant MDM-2017-0765 and Programa Severo Ochoa del Principado de Asturias (Spain)
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- Artículos [37543]
- Física [2001]
- Investigaciones y Documentos OpenAIRE [8377]
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