Observation of Higgs Boson Decay to Bottom Quarks [electronic resource]
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Corporate Authors: | , |
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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Subjects: |
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. |
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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. |