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research article

Evidence for the Higgs boson decay to a bottom quark–antiquark pair

Sirunyan, Albert M
•
Tumasyan, Armen
•
Adam, Wolfgang
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May 10, 2018
Physics Letters B

A search for the standard model (SM) Higgs boson (H) decaying to bb‾ when produced in association with an electroweak vector boson is reported for the following processes: Z(νν)H , W(μν)H , W(eν)H , Z(μμ)H , and Z(ee)H . The search is performed in data samples corresponding to an integrated luminosity of 35.9 fb−1 at s=13TeV recorded by the CMS experiment at the LHC during Run 2 in 2016. An excess of events is observed in data compared to the expectation in the absence of a H→bb‾ signal. The significance of this excess is 3.3 standard deviations, where the expectation from SM Higgs boson production is 2.8. The signal strength corresponding to this excess, relative to that of the SM Higgs boson production, is 1.2±0.4 . When combined with the Run 1 measurement of the same processes, the signal significance is 3.8 standard deviations with 3.8 expected. The corresponding signal strength, relative to that of the SM Higgs boson, is 1.06−0.29+0.31 .

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Type
research article
DOI
10.1016/j.physletb.2018.02.050
ArXiv ID

1709.07497

Author(s)
Sirunyan, Albert M
Tumasyan, Armen
Adam, Wolfgang
Ambrogi, Federico
Asilar, Ece
Bergauer, Thomas
Brandstetter, Johannes
Brondolin, Erica
Dragicevic, Marko
Erö, Janos
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Date Issued

2018-05-10

Published in
Physics Letters B
Volume

780

Start page

501

End page

532

Subjects

p p: scattering

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p p: colliding beams

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Higgs particle: hadroproduction

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Higgs particle: hadronic decay

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bottom: pair production

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bottom: particle identification

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electroweak interaction

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CERN LHC Coll

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vector boson: associated production

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W: associated production

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Z0: associated production

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W: leptonic decay

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Z0: leptonic decay

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CMS

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yield: ratio

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experimental results

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13000 GeV-cms

Editorial or Peer reviewed

REVIEWED

Written at

OTHER

EPFL units
LPHE  
Available on Infoscience
February 17, 2020
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/165787
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