A search for prompt lepton-jets in pp collisions at √s = 8 TeV with the ATLAS detector


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The ATLAS collaboration A., Aad G., Abbott B., Abdallah J., Abdinov O., Aben R., ...Daha Fazla

Journal of High Energy Physics, cilt.2016, sa.2, ss.1-51, 2016 (SCI-Expanded, Scopus) identifier identifier identifier

Özet

Abstract: A search is presented for a new, light boson with a mass of about 1 GeV and decaying promptly to jets of collimated electrons and/or muons (lepton-jets). The analysis is performed with 20.3 fb−1 of data collected by the ATLAS detector at the Large Hadron Collider in proton-proton collisions at a centre-of-mass energy of 8 TeV. Events are required to contain at least two lepton-jets. This study finds no statistically significant deviation from predictions of the Standard Model and places 95% confidence-level upper limits on the contribution of new phenomena beyond the SM, incuding SUSY-portal and Higgs-portal models, on the number of events with lepton-jets.[Figure not available: see fulltext.]