• DOI:10.1103/PhysRevLett.121.121801
• Corpus ID: 118901756

Observation of Higgs boson decay to bottom quarks

@inproceedings{Collaboration2018ObservationOH,
  title={Observation of Higgs boson decay to bottom quarks},
  author={Cms Tracker Collaboration},
  year={2018}
}

• C. Collaboration
• Published 24 August 2018
• Physics

The observation of the standard model (SM) Higgs boson decay to a pair of bottom quarks is presented. The main contribution to this result is from processes in which Higgs bosons are produced in association with a W or Z boson (VH), and are searched for in final states including 0, 1, or 2 charged leptons and two identified bottom quark jets. The results from the measurement of these processes in a data sample recorded by the CMS experiment in 2017, comprising 41.3 fb−1 of proton-proton collisions at √ s = 13 TeV, are described. When combined with previous VH measurements using data collected at √ s = 7, 8, and 13 TeV, an excess of events is observed at mH = 125 GeV with a significance of 4.8 standard deviations, where the expectation for the SM Higgs boson is 4.9. The corresponding measured signal strength is 1.01± 0.22. The combination of this result with searches by the CMS experiment for H → bb in other production processes yields an observed (expected) significance of 5.6 (5.5) standard deviations and a signal strength of 1.04± 0.20. Published in Physical Review Letters as doi:10.1103/PhysRevLett.121.121801. c © 2018 CERN for the benefit of the CMS Collaboration. CC-BY-4.0 license ∗See Appendix A for the list of collaboration members ar X iv :1 80 8. 08 24 2v 2 [ he pex ] 1 9 Se p 20 18