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

Research output: Contribution to journalArticle

  • the CMS Collaboration
Original languageEnglish
Pages (from-to)501-532
Number of pages32
JournalPhysics Letters B
Volume780
Early online date27 Feb 2018
DOIs
DateAccepted/In press - 20 Feb 2018
DateE-pub ahead of print - 27 Feb 2018
DatePublished (current) - 10 May 2018

Abstract

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√= 13 TeV 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 +0.31−0.29.

    Research areas

  • CMS, Physics, Higgs

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    Rights statement: This is the final published version of the article (version of record). It first appeared online via Elsevier at https://www.sciencedirect.com/science/article/pii/S0370269318301618 . Please refer to any applicable terms of use of the publisher.

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