Observation of Higgs Boson Decay to Bottom Quarks
A. M. Sirunyan, A. Tumasyan, W. Adam · CMS Collaboration; the full author list comprises thousands of collaboration members. A. M. Sirunyan et al. (CMS Collaboration).
Summary
The CMS Collaboration at the CERN LHC reported the observation of the Standard Model Higgs boson decaying to a pair of bottom quarks, the dominant predicted decay channel. The analysis focused on Higgs bosons produced in association with a W or Z boson (VH) in 13 TeV proton-proton collision data from 2017. Combined with earlier 7, 8, and 13 TeV measurements, the result yielded an excess at 125 GeV exceeding 5 standard deviations, establishing the decay.
Key findings
- Observed the H to b-bbar decay primarily through associated VH production with 0, 1, or 2 leptons and two b-tagged jets.
- The 2017 dataset alone (41.3 fb^-1 at 13 TeV) showed a 4.8 sigma excess at m_H = 125.09 GeV.
- Combining all CMS VH data across 7, 8, and 13 TeV pushed the observed significance above 5 standard deviations, confirming the Standard Model prediction.
Subjects & keywords
Cite this paper
A. M. Sirunyan, A. Tumasyan, & W. Adam [CMS Collaboration; the full author list comprises thousands of collaboration members. A. M. Sirunyan et al. (CMS Collaboration).] (2018). Observation of Higgs Boson Decay to Bottom Quarks. Physical Review Letters. https://doi.org/10.1103/PhysRevLett.121.121801
@article{sirunyan2018observation,
author = {A. M. Sirunyan and A. Tumasyan and W. Adam and {CMS Collaboration; the full author list comprises thousands of collaboration members. A. M. Sirunyan et al. (CMS Collaboration).}},
title = {Observation of Higgs Boson Decay to Bottom Quarks},
journal = {Physical Review Letters},
year = {2018},
doi = {10.1103/PhysRevLett.121.121801},
url = {https://doi.org/10.1103/PhysRevLett.121.121801}
}