Search for fractionally charged particles in proton-proton collisions at $\sqrt{s}$ = 13 TeV

Author:

CMS Collaboration

Keyword:

High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex)

journal:

CMS-EXO-19-006, CERN-EP-2024-002

date:

2024-02-15 00:00:00

Abstract

A search is presented for fractionally charged particles with charge below 1$e$, using their small energy loss in the tracking detector as a key variable to observe a signal. The analyzed data set corresponds to an integrated luminosity of 138 fb$^{-1}$ of proton-proton collisions collected at $\sqrt{s}$ = 13 TeV in 2016-2018 at the CERN LHC. This is the first search at the LHC for new particles with charges between $e/$3 and $e$. 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.

PDF: Search for fractionally charged particles in proton-proton collisions at $\sqrt{s}$ = 13 TeV.pdf