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Evidence for a particle produced in association with weak bosons and decaying to a bottom-antibottom quark pair in higgs boson searches at the tevatron

  • T. Aaltonen
  • , V. M. Abazov
  • , B. Abbott
  • , B. S. Acharya
  • , M. Adams
  • , T. Adams
  • , G. D. Alexeev
  • , G. Alkhazov
  • , A. Alton
  • , B. Álvarez González
  • , G. Alverson
  • , S. Amerio
  • , D. Amidei
  • , A. Anastassov
  • , A. Annovi
  • , J. Antos
  • , G. Apollinari
  • , J. A. Appel
  • , T. Arisawa
  • , A. Artikov
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Research output: Contribution to journalArticlepeer-review

243 Scopus citations

Abstract

We combine searches by the CDF and D0 Collaborations for the associated production of a Higgs boson with a W or Z boson and subsequent decay of the Higgs boson to a bottom-antibottom quark pair. The data, originating from Fermilab Tevatron pp̄ collisions at √s=1.96TeV, correspond to integrated luminosities of up to 9.7fb -1. The searches are conducted for a Higgs boson with mass in the range 100-150GeV/c2. We observe an excess of events in the data compared with the background predictions, which is most significant in the mass range between 120 and 135GeV/c2. The largest local significance is 3.3 standard deviations, corresponding to a global significance of 3.1 standard deviations. We interpret this as evidence for the presence of a new particle consistent with the standard model Higgs boson, which is produced in association with a weak vector boson and decays to a bottom-antibottom quark pair.

Original languageEnglish
Article number071804
JournalPhysical Review Letters
Volume109
Issue number7
DOIs
StatePublished - Aug 14 2012

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