First measurement of the top quark pair production cross section in proton-proton collisions at $$\sqrt{s}$$ = 13.6 TeV
The first measurement of the top quark pair ($$t\bar{t}$$) production cross section in proton-proton collisions at $$\sqrt{s}$$ = 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 $$t\bar{t}$$ 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.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Univ. of Rochester, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Organization:
- CMS Collaboration
- Grant/Contract Number:
- AC02-07CH11359; SC0008475
- OSTI ID:
- 1972364
- Alternate ID(s):
- OSTI ID: 2477974
- Report Number(s):
- CMS-TOP-22-012; CERN-EP-2023-021; FERMILAB-PUB-23-218-CMS; arXiv:2303.10680; oai:inspirehep.net:2648595; TRN: US2313791
- Journal Information:
- Journal of High Energy Physics (Online), Vol. 2023, Issue 8; ISSN 1029-8479
- Publisher:
- Springer NatureCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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