Search for long-lived neutral particles decaying into lepton jets in proton-proton collisions at âs= 8TeV with the ATLAS detector
2014 (English)In: Journal of High Energy Physics (JHEP), ISSN 1029-8479, E-ISSN 1126-6708, Vol. 2014, no 11, 48p- p.Article in journal (Refereed) Published
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 â€œlepton jetsâ€). These particles can also be long-lived with decay length comparable to, or even larger than, the LHC detectorsâ€™ linear dimensions. This paper presents the results of a search for lepton jets in proton-proton collisions at the centre-of-mass energy of âˆšs= 8TeV in a sample of 20.3 fbâˆ’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 particleâ€™s proper decay length.
Place, publisher, year, edition, pages
2014. Vol. 2014, no 11, 48p- p.
IdentifiersURN: urn:nbn:se:kth:diva-158789DOI: 10.1007/JHEP11(2014)088ISI: 000345639900001ScopusID: 2-s2.0-84914140238OAI: oai:DiVA.org:kth-158789DiVA: diva2:778996
FunderMarianne and Marcus Wallenberg FoundationSwedish Research Council
QC 201501122015-01-122015-01-122015-01-12Bibliographically approved