Würzburg 2018 – scientific programme

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T: Fachverband Teilchenphysik

T 75: Suche nach Supersymmetrie III

T 75.7: Talk

Thursday, March 22, 2018, 18:00–18:15, Philo-HS3

Search for chargino and neutralino pair production decaying via a W and Higgs boson into final states with two same-sign leptons with the ATLAS detector — •Daniela Köck and Jeanette Lorenz — Ludwig-Maximilians-Universität München

Supersymmetry (SUSY) is an extension of the Standard Model (SM), which can solve the SM hierarchy problem if SUSY particles are present at the TeV scale. If R-parity is conserved, SUSY particles are produced in pairs, and the lightest supersymmetric particle (LSP) is stable. The pair production of charginos and neutralinos might be the dominant production mode of supersymmetric particles in √s = 13 TeV p-p-collisions at the LHC, if squarks and gluinos are beyond the reach of the LHC.

A search for pair production of charginos and neutralinos with 36.1 fb⁻¹ of proton-proton collisions recorded by the ATLAS detector is presented, where the charginos and neutralinos decay into W and Higgs bosons and LSPs. These decays may lead to different final states depending on the decays of the W and Higgs bosons. Among those, the final state with two same-sign leptons (electrons and muons) provides a distinguished signature with low SM background. This talk will present an analysis in this channel, in particular highlighting the sensitivity optimisation and expected results.