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

Physical Review Letters 2025
Kārlis Dreimanis, Antra Gaile, Guntis Pikurs, Andris Potrebko, Markus Seidel, Viesturs Veckalns, CMS Collaboration

A search is presented for fractionally charged particles with charges below 1⁢𝑒, 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 0.9⁢𝑒, including an extension of previous results at a charge of 2⁢𝑒/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.

DOI
10.1103/PhysRevLett.134.131802
Hipersaite
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.134.131802

The CMS Collaboration, A.Hayrapetyan, K.Dreimanis, A.Gaile, G.Pikurs, A.Potrebko, M.Seidel, V.Veckalns ... [et al.] Search for Fractionally Charged Particles in Proton-Proton Collisions at √s = 13 TeV. Physical Review Letters, 2025, Vol. 134, No. 13, Article number 131802. ISSN 0031-9007. e-ISSN 1079-7114. Pieejams: doi:10.1103/PhysRevLett.134.131802

Publikācijas valoda
English (en)