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https://elib.bsu.by/handle/123456789/260843
Заглавие документа: | Search for excited electrons singly produced in proton–proton collisions at √s=13Te with the ATLAS experiment at the LHC |
Авторы: | Hrynevich, A. ATLAS Collaboration |
Тема: | ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика |
Дата публикации: | 2019 |
Издатель: | Springer New York LLC |
Библиографическое описание источника: | Eur Phys J C 2019;79(9). |
Аннотация: | A search for excited electrons produced in pp collisions at s = 13 Te via a contact interaction qq¯ → ee∗ is presented. The search uses 36.1 fb- 1 of data collected in 2015 and 2016 by the ATLAS experiment at the Large Hadron Collider. Decays of the excited electron into an electron and a pair of quarks (eqq¯) are targeted in final states with two electrons and two hadronic jets, and decays via a gauge interaction into a neutrino and a W boson (νW) are probed in final states with an electron, missing transverse momentum, and a large-radius jet consistent with a hadronically decaying W boson. No significant excess is observed over the expected backgrounds. Upper limits are calculated for the pp→ ee∗→ eeqq¯ and pp→ ee∗→ eνW production cross sections as a function of the excited electron mass me∗ at 95% confidence level. The limits are translated into lower bounds on the compositeness scale parameter Λ of the model as a function of me∗. For me∗<0.5 Te, the lower bound for Λ is 11 Te. In the special case of me∗=Λ, the values of me∗<4.8 Te are excluded. The presented limits on Λ are more stringent than those obtained in previous searches. |
URI документа: | https://elib.bsu.by/handle/123456789/260843 |
DOI документа: | 10.1140/epjc/s10052-019-7295-1 |
Scopus идентификатор документа: | 85073185035 |
Финансовая поддержка: | CERN for the benefit of the ATLAS collaboration. |
Располагается в коллекциях: | Статьи НИУ «Институт ядерных проблем» |
Полный текст документа:
Файл | Описание | Размер | Формат | |
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Aaboud2019_Article_SearchForExcitedElectronsSingl.pdf | 1,48 MB | Adobe PDF | Открыть |
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