SMuK 2023 – scientific programme

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T: Fachverband Teilchenphysik

T 105: Flavor IX

T 105.6: Talk

Thursday, March 23, 2023, 17:05–17:20, HSZ/0401

Constraining flavorful SMEFT operators with missing energy plus jet — Gudrun Hiller and •Daniel Wendler — TU Dortmund University, Department of Physics, Otto-Hahn-Str.4, D-44221 Dortmund, Germany

We consider the Drell-Yan process with final state neutrinos, where the experimental signature is given by "missing energy + jet", as a probe for new physics. The process pp → ν ν+ jet is analyzed, to constrain flavorful semileptonic four-fermion operators based on present LHC data (L_int= 139   fb⁻¹). Projections are derived for the High Luminosity Large Hadron Collider (HL-LHC). New physics scales probed are Λ_NP ∼ 3.5   TeV, 3.0 TeV, 2.6 TeV and 1.6  TeV for uc, ds, db and sb, respectively for four-fermion operators. The limits are complementary and competitive or better to those from Drell-Yan involving taus, and with low energy observables, such as from rare decays of kaons, charm and beauty hadrons.