Search for new Higgs bosons via same-sign top quark pair production in association with a jet in proton-proton collisions at $$\sqrt{s}=13$$ TeV
A search is presented for new Higgs bosons in proton-proton (pp) collision events in which a same-sign top quark pair is produced in association with a jet, via the pp $$\to$$ tH/A $$\to$$ tt$$\mathrm{\bar{c}}$$ and pp $$\to$$ tH/A $$\to$$ tt$$\mathrm{\bar{u}}$$ processes. Here, H and A represent the extra scalar and pseudoscalar boson, respectively, of the second Higgs doublet in the generalized two-Higgs-doublet model (g2HDM). The search is based on pp collision data collected at a center-of-mass energy of 13 TeV with the CMS detector at the LHC, corresponding to an integrated luminosity of 138 fb$$^{-1}$$. Final states with a same-sign lepton pair in association with jets and missing transverse momentum are considered. New Higgs bosons in the 200-1000 GeV mass range and new Yukawa couplings between 0.1 and 1.0 are targeted in the search, for scenarios in which either H or A appear alone, or in which they coexist and interfere. No significant excess above the standard model prediction is observed. Exclusion limits are derived in the context of the g2HDM.
- Research Organization:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Organization:
- The CMS Collaboration
- Grant/Contract Number:
- AC02-07CH11359; AC02-05CH11231
- OSTI ID:
- 2212432
- Alternate ID(s):
- OSTI ID: 2406433
- Report Number(s):
- CMS-TOP-22-010; CERN-EP-2023-234; FERMILAB-PUB-23-678-CMS; arXiv:2311.03261; oai:inspirehep.net:2719537; TRN: US2406963
- Journal Information:
- Physics Letters. B, Vol. 850; ISSN 0370-2693
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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