A 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.

Hayrapetyan, A., Tumasyan, A., Adam, W., Andrejkovic, J., Bergauer, T., Chatterjee, S., et al. (2025). Search for Fractionally Charged Particles in Proton-Proton Collisions at (Formula presented). PHYSICAL REVIEW LETTERS, 134(13) [10.1103/PhysRevLett.134.131802].

Search for Fractionally Charged Particles in Proton-Proton Collisions at (Formula presented)

Xiao J.;Boldrini G.;Brivio F.;Cetorelli F.;De Guio F.;Dinardo M. E.;Ghezzi A.;Govoni P.;Guzzi L.;Lucchini M. T.;Malberti M.;Moroni L.;Paganoni M.;Pinolini B. S.;Ragazzi S.;de Fatis T. T.;Zuolo D.;Gerosa R.;
2025

Abstract

A 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.
Articolo in rivista - Articolo scientifico
Electron reflection; Metal ions; Negative ions; Photoelectrons; Positive ions
English
2-apr-2025
2025
134
13
131802
none
Hayrapetyan, A., Tumasyan, A., Adam, W., Andrejkovic, J., Bergauer, T., Chatterjee, S., et al. (2025). Search for Fractionally Charged Particles in Proton-Proton Collisions at (Formula presented). PHYSICAL REVIEW LETTERS, 134(13) [10.1103/PhysRevLett.134.131802].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/575284
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