Search for long-lived neutral particles decaying into lepton jets in proton-proton collisions at root s=8 Tev with the ATLAS detector

Journal article

© 2014, The Author(s). Abstract: Several models of physics beyond the Standard Model predict neutral particles that decay into final states consisting of collimated jets of light leptons and hadrons (so-called “lepton jets”). These particles can also be long-lived with decay length comparable to, or even larger than, the LHC detectors’ linear dimensions. This paper presents the results of a search for lepton jets in proton-proton collisions at the centre-of-mass energy of √s= 8TeV in a sample of 20.3 fb⁻¹ collected during 2012 with the ATLAS detector at the LHC. Limits on models predicting Higgs boson decays to neutral long-lived lepton jets are derived as a function of the particle’s proper decay length.

Authors: Aad, G; Abbott, B; Abdallah, J; Khalek, SA; Abdinov, O

• Publication status: Published
• Journal: JOURNAL OF HIGH ENERGY PHYSICS
• Volume: 2014
• Issue: 11
• Publication date: 2014-11-18
• DOI: 10.1007/JHEP11(2014)088
• EISSN: 1029-8479
• ISSN: 1029-8479
• Keywords: Hadron-Hadron Scattering