![]() Recent progress in calculating lepton density functions inside the proton and simulating lepton showers laid the foundations for precision studies of resonant leptoquark production at hadron colliders. We finally discuss how to disentangle the flavor structure of leptoquark interactions by exploiting the interplay between different production channels. Theoretical uncertainties due to the renormalisation and factorisation scale variations and the limited knowledge of parton distribution functions are quantified. We compute NLO K -factors for a wide range of scalar leptoquark masses, as well as, all possible combinations of quark and lepton flavors and leptoquark charges. ![]() Next-to-leading (NLO) QCD and QED corrections are similar in size but come with the opposite sign. We present the first computation of higher order radiative corrections to the resonant leptoquark production cross section at the Large Hadron Collider (LHC). Even though the parton distribution functions for leptons inside the proton are minuscule, they get compensated by the resonant enhancement. When a TeV-scale leptoquark has a sizeable Yukawa coupling, its dominant production mechanism at hadron colliders is the partonic-level lepton-quark fusion.
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