Search for t-channel scalar and vector leptoquark exchange in the high-mass dimuon and dielectron spectra in proton-proton collisions at √s = 13 TeV
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13130_2025_Article_27754.pdf
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Author(s)
Hayrapetyan, A.
Tumasyan, A.
Adam, W.
Andrejkovic, J. W.
Benato, L.
Bergauer, T.
Chatterjee, S.
Damanakis, K.
Dragicevic, M.
Hussain, P. S.
Date Issued
December 9, 2025
Journal
Journal of High Energy Physics
Publisher
Springer Berlin Heidelberg
Citation
The CMS collaboration., Hayrapetyan, A., Tumasyan, A. et al. Search for t-channel scalar and vector leptoquark exchange in the high-mass dimuon and dielectron spectra in proton-proton collisions at √s = 13 TeV. J. High Energ. Phys. 2025, 52 (2025).
Version
Final published version
Abstract
A search for t-channel exchange of leptoquarks (LQs) is performed in dimuon
and dielectron spectra using proton-proton collision data collected at √
s = 13 TeV with
the CMS detector at the CERN LHC. The data correspond to an integrated luminosity of
138 fb−1
. Eight scenarios are considered, in which up or down quarks couple to muons or
electrons via a scalar or vector LQ exchange, for dilepton invariant masses above 500 GeV.
The LQ masses are probed up to 5 TeV, beyond a regime probed by previous pair-production
and single-production searches. The differential distributions of dilepton events are fit to
templates that model the nonresonant LQ exchange and various standard model background
processes. Limits are set on LQ-fermion coupling strengths for scalar and vector LQ masses
in the 1–5 TeV range at 95% confidence level, establishing stringent limits on first- and
second-generation LQs.
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Massachusetts Institute of Technology. Department of Brain and Cognitive Sciences
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1007/JHEP12(2025)052
