Search for New Particles in an Extended Higgs Sector with Four b Quarks in the Final State at √s = 13 TeV
Physics Letters B 2022
Kārlis Dreimanis, Viesturs Veckalns

A search for a massive resonance X decaying to a pair of spin-0 bosons ϕ that themselves decay to pairs of bottom quarks, is presented. The analysis is restricted to the mass ranges mϕ from 25 to 100 GeV and mX from 1 to 3 TeV. For these mass ranges, the decay products of each ϕ boson are expected to merge into a single large-radius jet. Jet substructure and flavor identification techniques are used to identify these jets. The search is based on CERN LHC proton-proton collision data at s=13TeV, collected with the CMS detector in 2016–2018, corresponding to an integrated luminosity of 138fb−1. Model-specific limits, where the two new particles arise from an extended Higgs sector, are set on the product of the production cross section and branching fraction for X→ϕϕ→(bb‾)(bb‾) as a function of the resonances' masses, where both the X→ϕϕ and ϕ→bb‾ branching fractions are assumed to be 100%. These limits are the first of their kind on this process, ranging between 30 and 1 fb at 95% confidence level for the considered mass ranges.


Keywords
2HDM | BSM | CMS | Higgs
DOI
10.1016/j.physletb.2022.137566
Hyperlink
https://www.sciencedirect.com/science/article/pii/S0370269322007006?via%3Dihub

The CMS Collaboration, A.Tumasyan, K.Dreimanis, V.Veckalns ... [et al.]. Search for New Particles in an Extended Higgs Sector with Four b Quarks in the Final State at √s = 13 TeV. Physics Letters B, 2022, Vol. 835, Article number 1137566. ISSN 0370-2693. Available from: doi:10.1016/j.physletb.2022.137566

Publication language
English (en)
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