2026-10-19T01:08:41Zhttps://ebyu-rdlopen.rawdatalibrary.net/oai/requestoai:ebyu-rdlopen.rawdatalibrary.net:ebyu/105202026-10-18T20:25:43Zopenairedrivercom_ebyu_10000col_ebyu_10001Search for Fractionally Charged Particles in Proton-Proton Collisions at (Formula presented)Hayrapetyan, A.Tumasyan, A.Adam, W.Andrejkovic, J.W.Bergauer, T.Chatterjee, S.Damanakis, K.Dragicevic, M.Del Valle, A. EscalanteHussain, P.S.Jeitler, M.Krammer, N.Lechner, L.Liko, D.Mikulec, I.Schieck, J.Schöfbeck, R.Schwarz, D.Sonawane, M.Templ, S.Waltenberger, W.Wulz, C.-E.Darwish, M.R.Janssen, T.Van Mechelen, P.Bols, E.S.D’Hondt, J.Dansana, S.De Moor, A.Delcourt, M.El Faham, H.Lowette, S.Makarenko, I.Morton, A.Müller, D.Sahasransu, A.R.Tavernier, S.Tytgat, M.Van Putte, S.Vannerom, D.Clerbaux, B.De Lentdecker, G.Favart, L.Hohov, D.Jaramillo, J.Khalilzadeh, A.Lee, K.Mahdavikhorrami, M.Malara, A.Paredes, S.Electron reflectionMetal ionsNegative ionsPhotoelectronsPositive ionsprotonConfidence levelsDrell-YanIntegrated luminosityKey variablesProduction modesProton proton collisionsSmall energyStringentsTracking detectorsagedarticlecontrolled studyProtonsA search is presented for fractionally charged particles with charges below (Formula presented), 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 (Formula presented) of proton-proton collisions collected at (Formula presented) in 2016-2018 at the CERN LHC. This is the first search at the LHC for new particles with a charge between (Formula presented) and (Formula presented), including an extension of previous results at a charge of (Formula presented). Masses up to 640 GeV and charges as low as (Formula presented) are excluded at 95% confidence level. These are the most stringent limits to date for the considered Drell-Yan-like production mode. © 2025 CERN, for the CMS Collaboration.American Physical Society2025Articlehttps://rdlopen.rawdatalibrary.net/r/ebyu/10520https://doi.org/10.1103/physrevlett.134.1318020031-9007enPhysical Review Lettersinfo:eu-repo/semantics/openAccessinfo:eu-repo/semantics/articlehttps://ebyu-rdlopen.rawdatalibrary.net/tr/items/ebyu/10520