CMS-PAS-B2G-25-003

CMS-PAS-B2G-25-003
Combination of CMS searches for heavy vector boson resonances at $ \sqrt{s}= $ 13 TeV
CMS Collaboration
2025-10-02

Abstract: A combined statistical analysis of searches for heavy vector boson resonances decaying into pairs of W, Z, or H bosons, as well as into quark pairs ($ \mathrm{q}\bar{\mathrm{q}} $, $ \mathrm{b}\bar{\mathrm{b}} $, $ \mathrm{t}\bar{\mathrm{t}} $, $ \mathrm{tb} $) or lepton pairs ($ \ell\ell $, $ \ell\nu $), with $ \ell = e, \mu, \tau $, is presented. The results are based on proton-proton collision data at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 138 fb$ ^{-1} $, collected by the CMS experiment between 2016 and 2018. No significant deviation from the expectations of the standard model (SM) is observed. The results are interpreted in the simplified heavy vector triplet (HVT) framework, setting 95% confidence level upper limits on the production cross sections and coupling-strengths to SM particles of the heavy vector bosons. The combination provides the most stringent constraints to date on new phenomena predicted by the HVT model. The results exclude heavy vector boson resonances with a mass below 5.5 TeV in a weakly-coupled scenario, below 4.8 TeV in a strongly-coupled scenario, and up to 2.0 TeV in the case of production via vector-boson fusion. These results represent a significant improvement over previous constraints, driven by the inclusion of the full data set and advances in the underlying analyses.
Links: CDS record (PDF) ; CADI line (restricted) ; These preliminary results are superseded in this paper, Submitted to JHEP. The superseded preliminary plots can be found here.

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