Hayrapetyan, A.Tumasyan, A.Adam, W.Andrejkovic, J. W.Benato, L.Bergauer, T.Druzhkin, D.2026-02-152026-02-1520251029-847910.1007/JHEP12(2025)0522-s2.0-105027981837https://doi.org/10.1007/JHEP12(2025)052Viinikainen, Jussi/0000-0003-2530-4265; Osterberg, Kenneth/0000-0003-4807-0414; Lampén, Tapio/0000-0002-8398-4249; Grunewald, Martin/0000-0002-5754-0388; Lehti, Sami/0000-0003-1370-5598; Luukka, Panja/0000-0003-2340-4641; Grunewald, Martin/0000-0002-5754-0388; Della Ricca, Giuseppe/0000-0003-2831-6982; Bharthuar, Shudhashil/0000-0001-5871-9622; Della Ricca, Giuseppe/0000-0003-2831-6982; Voutilainen, Mikko/0000-0002-5200-6477; Siikonen, Hannu/0000-0003-2039-5874; Myllymäki, Mikael/0000-0003-0510-3810; El-Mahdy, Basma/0000-0002-1979-8548; Della Ricca, Giuseppe/0000-0003-2831-6982; Tuominiemi, Jorma/0000-0003-0386-8633; Rantanen, Milla-Maarit/0000-0002-6764-0016; Barroso Ferreira Filho, Mapse/0000-0003-3904-0571; Lehti, Sami/0000-0003-1370-5598; Lampén, Tapio/0000-0002-8398-4249; Martikainen, Laura/0000-0003-1609-3515; Luukka, Panja/0000-0003-2340-4641A search for t-channel exchange of leptoquarks (LQs) is performed in dimuon and dielectron spectra using proton-proton collision data collected at 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.eninfo:eu-repo/semantics/openAccessBeyond Standard ModelHadron-Hadron ScatteringLepton ProductionArticle