TY - SER AU - Aad,G. AU - Abdallah,J. AU - Chelkov,G.A. AU - Abbott,B. TI - A search for prompt lepton-jets in pp collisions at √s = 8 TeV with the ATLAS detector KW - ATLAS, детектор KW - Большой адронный коллайдер KW - бозоны KW - столкновение частиц KW - лептоны KW - статьи в журналах N1 - Библиогр.: 66 назв N2 - 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 UR - http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000552830 ER -