Aachen 2019 – scientific programme

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T: Fachverband Teilchenphysik

T 36: Supersymmetrie I

T 36.2: Talk

Tuesday, March 26, 2019, 16:15–16:30, S11

Combination of Searches for gauge-mediated Supersymmetry in Events with Photons at CMS — Christian Autermann, Lutz Feld, Johannes Schulz, Marius Teroerde, and •Danilo Meuser — I. Physikalisches Insitut B, RWTH Aachen University

Supersymmetry is one of the most popular extensions to the standard model of particle physics, providing possible solutions to problems such as the hierarchy problem or the unification of forces. In the context of gauge-mediated supersymmetry the rate of events with photons in the final state can be enhanced. This motivates searches in events with photons and missing transverse momentum due to the undetected lightest supersymmetric particle.
This analysis combines searches for gauge-mediated supersymmetry in events with at least one photon. The combination is based on proton-proton collision data recorded by CMS in 2016, which corresponds to a center-of-mass energy of 13 TeV and an integrated luminosity of 35.9 fb⁻¹. Four individual analyses, which all focus on signatures with isolated photons and a significant amount of missing transverse momentum, are combined to cover a wide range of different signal scenarios. These signatures are complemented by additional charged leptons, a second photon, or additional requirements on the hadronic activity. Within the analysis, possible overlaps between the different signal regions are removed by an optimized veto strategy. The combination of searches probes the phase space of gauge-mediated scenarios and improves the exclusion limits derived by the individual analyses.