Search for pair-produced long-lived neutral particles decaying to jets in the ATLAS hadronic calorimeter in pp collisions at s=8TeV

ATLAS Collaboration

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

The ATLAS detector at the Large Hadron Collider at CERN is used to search for the decay of a scalar boson to a pair of long-lived particles, neutral under the Standard Model gauge group, in 20.3fb-1 of data collected in proton-proton collisions at s=8TeV. This search is sensitive to long-lived particles that decay to Standard Model particles producing jets at the outer edge of the ATLAS electromagnetic calorimeter or inside the hadronic calorimeter. No significant excess of events is observed. Limits are reported on the product of the scalar boson production cross section times branching ratio into long-lived neutral particles as a function of the proper lifetime of the particles. Limits are reported for boson masses from 100 GeV to 900 GeV, and a long-lived neutral particle mass from 10 GeV to 150 GeV.

Original languageEnglish
Pages (from-to)15-34
Number of pages20
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume743
DOIs
Publication statusPublished - 2015 Apr 9

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Keywords

  • High-energy collider experiment
  • Long-lived neutral particle
  • New physics

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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