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.
Search for fractionally charged particles in proton-proton collisions at sqrt(s) = 13 TeV
Cavallo, N.;Fabozzi, F.;
2025-01-01
Abstract
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.


