First evidence for ZZ gamma production at 3.7 sigma and observation of 4 lepton gamma at 5.0 sigma in CMS data at 13 TeV, with measured fiducial cross sections consistent with predictions.
Measurement of the properties of a Higgs boson in the four-lepton final state
4 Pith papers cite this work. Polarity classification is still indexing.
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CMS implemented a particle-flow algorithm that reconstructs a complete list of final-state particles per collision, delivering superior performance for jets, hadronic taus, missing transverse momentum, and lepton identification up to 20 pileup interactions.
The rare Higgs decay H to four bottom quarks has a branching ratio of order 1.6e-3 with relevant destructive interference and is observable at 3-5 sigma at HL-LHC and ILC via boosted decision tree analyses in WH and ZH production.
In a radiative seesaw model, one-loop contributions from Majorana neutrinos to the ZZh vertex produce CP-conserving anomalous couplings of order 10^{-3} potentially observable at future lepton colliders, while CP-violating effects remain suppressed.
citing papers explorer
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Evidence of ZZ$\gamma$ production and observation of $4\ell\gamma$ in proton-proton collisions at $\sqrt{s}$ = 13 TeV
First evidence for ZZ gamma production at 3.7 sigma and observation of 4 lepton gamma at 5.0 sigma in CMS data at 13 TeV, with measured fiducial cross sections consistent with predictions.
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Particle-flow reconstruction and global event description with the CMS detector
CMS implemented a particle-flow algorithm that reconstructs a complete list of final-state particles per collision, delivering superior performance for jets, hadronic taus, missing transverse momentum, and lepton identification up to 20 pileup interactions.
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Probing the Rare Four-Bottom Higgs Decay $H\to b\bar b b\bar b$ at the HL-LHC and ILC
The rare Higgs decay H to four bottom quarks has a branching ratio of order 1.6e-3 with relevant destructive interference and is observable at 3-5 sigma at HL-LHC and ILC via boosted decision tree analyses in WH and ZH production.
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New physics in the $ZZh$ vertex: One-loop contributions from a radiative seesaw model
In a radiative seesaw model, one-loop contributions from Majorana neutrinos to the ZZh vertex produce CP-conserving anomalous couplings of order 10^{-3} potentially observable at future lepton colliders, while CP-violating effects remain suppressed.