Observation of Higgs Boson Decay to Bottom Quarks [electronic resource]

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Bibliographic Details
Online Access: Full Text (via OSTI)
Corporate Authors: Fermi National Accelerator Laboratory (Researcher), Lawrence Livermore National Laboratory (Researcher)
Format: Government Document Electronic eBook
Language:English
Published: Washington, D.C. : Oak Ridge, Tenn. : United States. Department of Energy. Office of High Energy Physics ; Distributed by the Office of Scientific and Technical Information, U.S. Department of Energy, 2018.
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Description
Abstract:Here, 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<sup>-1</sup> of proton-proton collisions at $\sqrt{s}$ = 13 TeV, are described. When combined with previous VH measurements using data collected at $\sqrt{s}$ = 7, 8, and 13 TeV, an excess of events is observed at m<sub>H</sub>=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 ł 0.22. The combination of this result with searches by the CMS experiment for H?$b\bar{b}$ in other production processes yields an observed (expected) significance of 5.6 (5.5) standard deviations and a signal strength of 1.04ł0.20.
Item Description:Published through Scitech Connect.
09/17/2018.
"FERMILAB-PUB-18-527-CMS."
"arXiv:1808.08242."
"CMS-HIG-18-016."
"CERN-EP-2018-223."
"LLNL-JRNL-819448."
"Journal ID: ISSN 0031-9007."
"PRLTAO."
"Other: 1691854."
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Dragicevic, M.; Er,̲ J.; Escalante Del Valle, A.; et al.
Rice Univ., Houston, TX (United States)
Princeton Univ., NJ (United States)
Physical Description:Size: Article No. 121801 : digital, PDF file.