Search for a High-Mass Dimuon Resonance Produced in Association with b Quark Jets at √s = 13 TeV
Journal of High Energy Physics 2023
Kārlis Dreimanis, Antra Gaile, Guntis Pikurs, Andris Potrebko, Markus Seidel, Viesturs Veckalns, CMS Collaboration

A search for high-mass dimuon resonance production in association with one or more b quark jets is presented. The study uses proton-proton collision data collected with the CMS detector at the LHC corresponding to an integrated luminosity of 138 fb−1−1 at a center-of-mass energy of 13 TeV. Model-independent limits are derived on the number of signal events with exactly one or more than one b quark jet. Results are also interpreted in a lepton-flavor-universal model with Z′ boson couplings to a bb quark pair (gbb​), an sb quark pair (gbb​δbsbs​), and any same-flavor charged lepton (gℓℓ​) or neutrino pair (gνν​), with |gνν​| = |gℓℓ​|. For a Z′ boson with a mass mZ′mZ′​ = 350 GeV (2 TeV) and |δbsbs​| < 0.25, the majority of the parameter space with 0.0057 < |gℓℓ​| < 0.35 (0.25 < |gℓℓ​| < 0.43) and 0.0079 < |gbb​| < 0.46 (0.34 < |gbb​| < 0.57) is excluded at 95% confidence level. Finally, constraints are set on a Z′ model with parameters consistent with low-energy b → sℓℓ measurements. In this scenario, most of the allowed parameter space is excluded for a Z′ boson with 350 < mZ′mZ′​ < 500 GeV, while the constraints are less stringent for higher mZ′mZ′​ hypotheses. This is the first dedicated search at the LHC for a high-mass dimuon resonance produced in association with multiple b quark jets, and the constraints obtained on models with this signature are the most stringent to date.


Keywords
Beyond Standard Model, Hadron-Hadron Scattering, Jets, Bottom Quarks
DOI
10.1007/JHEP10(2023)043
Hyperlink
https://link.springer.com/article/10.1007/JHEP10(2023)043

The CMS Collaboration, A.Hayrapetyan, K.Dreimanis, A.Gaile, G.Pikurs, A.Potrebko, M.Seidel, V.Veckalns ... [et al.]. Search for a High-Mass Dimuon Resonance Produced in Association with b Quark Jets at √s = 13 TeV. Journal of High Energy Physics, 2023, Vol. 2023, No. 10, Article number 43. e-ISSN 1029-8479. Pieejams: doi:10.1007/JHEP10(2023)043

Publication language
English (en)
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