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Keyword：CMS experiment
CMS Experiment Advances Higgs Boson Pair Search with New Data
The CMS Collaboration has recently announced new progress in the study of Higgs boson pair production. The study is based on proton collision data at a center-of-mass energy of 13.6 TeV recorded by the CMS detector from 2022 to 2024, focusing on the search for processes where one Higgs boson decays to a bottom quark–antiquark pair and the other decays to a τ lepton–antitau pair, namely the HH→bbττ channel. Since the discovery of the Higgs boson in 2012, the CMS and ATLAS Collaborations have continuously measured the interactions of the Higgs boson with other Standard Model particles, and the results so far remain generally consistent with Standard Model predictions. In contrast, the “self-coupling” among multiple Higgs bosons...
2026-08-17
CMS records highest-energy lepton pairs to date, testing the possibility of a composite Higgs boson
The CMS experiment recently used the complete proton-proton collision dataset collected during Run 2 of the Large Hadron Collider and the first two years of Run 3, namely 2022 to 2023, to search for clues that the Higgs boson may be composed of smaller constituents. The analysis results show that the experimental data are consistent with Standard Model predictions, with no evidence pointing to new physics yet. Whether the Higgs boson is an elementary particle or a composite particle with deeper structure is a long-standing question in particle physics. To test this possibility, the CMS team adopted two complementary approaches: on one hand, directly searching for new heavy particles that could be produced at the Large Hadron Collider; on the other hand, indirectly probing the effects of new particles with higher masses that are difficult to produce directly through subtle deviations in high-energy electron pair and muon pair production processes.
2026-08-10