Search for Fractionally Charged Particles in Proton-Proton Collisions at √s = 13 TeV

Авторы: Belyaev A.V., Boos E., Bunichev V., Dubinin M., Dudko L., Ershov A.A., Gribushin A., Klyukhin V., Kodolova O., Obraztsov S., Savrin V., Snigirev A., CMS Collaboration
Журнал: Physical Review Letters
Том: 135
Год издания: 2025
Издательство: American Physical Society
Местоположение издательства: United States
Первая страница: 131802
DOI: 10.1103/PhysRevLett.134.131802
Аннотация: A search is presented for fractionally charged particles with charges below 1e, using their small energy loss in the tracking detector as a key variable to observe a signal. The analyzed dataset corresponds to an integrated luminosity of 138 fb−1 of proton-proton collisions collected at √s = 13 TeV in 2016–2018 at the CERN LHC. This is the first search at the LHC for new particles with a charge between e=3 and 0.9e, including an extension of previous results at a charge of 2e=3. Masses up to 640 GeV and charges as low as e=3 are excluded at 95% confidence level. These are the most stringent limits to date for the considered Drell-Yan-like production mode.
Добавил в систему: Клюхин Вячеслав Иванович

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