Karlsruhe 2024 – scientific programme

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T: Fachverband Teilchenphysik

T 81: Search for new particles 5 (SUSY)

T 81.3: Talk

Thursday, March 7, 2024, 16:30–16:45, Geb. 20.30: 1.067

Combination and Reinterpretation of LHC SUSY Searches — •Alexander Feike¹, Juri Fiaschi^2,3, Benjamin Fuks⁴, Michael Klasen¹, and Alexander Neuwirth¹ — ¹Institut für Theoretische Physik, Universität Münster, Wilhelm-Klemm-Straße 9, 48149 Münster, Germany — ²Department of Mathematical Sciences, University of Liverpool, Liverpool L69 3BX, United Kingdom — ³Dipartimento di Fisica, Università degli Studi di Milano-Bicocca, Piazza della Scienza 3, I-20126 Milano, Italy — ⁴Laboratoire de Physique Theorique et Hautes Energies (LPTHE), UMR 7589, Sorbonne Universite et CNRS, 4 place Jussieu, 75252 Paris Cedex 05, France

To maximise the information obtained from various BSM searches conducted at the LHC, it is imperative to contemplate the combination of multiple analyses. We consider a simplified SUSY scenario with all particles but one squark flavor and a bino like neutralino decoupled to showcase the exclusion power gained by combining uncorrelated signal regions of different analyses. This study includes the purely strong squark pair, the associated squark neutralino and the purely weak neutralino pair production, individually and their combination. We find that considering associated and strong production together significantly impacts the mass limit, while the contribution from the weak production is insignificant. In addition, we demonstrate that the combination of uncorrelated signal regions substantially pushes the exclusion limit towards higher masses, compared to the most sensitive individual analysis.

Keywords: SUSY; LHC; Collider physics