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T: Fachverband Teilchenphysik

T 26: Suche nach Supersymmetrie I

T 26.3: Vortrag

Dienstag, 20. März 2018, 17:00–17:15, Philo-HS3

Search for charginos and neutralinos in events with one lepton, 2 b-jets and missing transverse momentum with the ATLAS detector — •Danijela Bogavac and Jeanette Miriam Lorenz — LMU München Am Coulombwall 1, DE-85748 Garching

This talk focuses on searches for supersymmetric particles in decay modes χ₁^±→ W^±+χ₁⁰ and χ₂⁰→ h+χ₁⁰. A final state of one lepton (electron or muon), 2 b-jets from the Higgs boson decay and missing transverse momentum is explored. The search is performed using 36.1 fb⁻¹ of proton-proton collision data delivered by the Large Hadron Collider (LHC) and recorded by the ATLAS detector in 2015 and 2016. A significantly larger dataset in the LHC Run II and the increase of the LHC energy from 8 to 13 TeV allow this analysis to exceed the sensitivity of the LHC Run I.
Three statistically orthogonal signal regions are designed to target the wide range of kinematics that can be obtained from the decay of charginos and neutralinos. They are built using the Higgs boson invariant mass as a main discriminating variable between signal and backgrounds. Recent results will be shown and the analysis strategy will be discussed.