2015/08/29 by Ran Ding, Ding, Ran, Yizhou Fan +7
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle Detector Development and Performance #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.48550/arxiv.1508.07452
arxiv created 2015/08/29 · openalex publication_date 2015/08/29 · arxiv updated 2015/09/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The ATLAS Collaboration announced a 3σ excess in the leptonic-Z+jets+\met channel. We show that such an excess can be interpreted in the extension of the Next-to-Minimal Supersymmetric Standard Model (NMSSM) with a heavy Dirac gluino and light squarks. The abundant Z bosons can be produced by light squark pair productions with the subsequent decays q → q χ20 → q Z χ10. We investigate the relevant parameter space by considering the constraints from both the ATLAS and CMS direct SUSY searches. Our model can provide sufficient Z-signal events in large parameter space if only the ATLAS searches are considered. After combining the ATLAS and CMS searches, the maximal number of signal events can still reach about 15, which is within the 1σ region of the observed excess. For comparison, we study the conventional low energy NMSSM with a Majorana gluino and its maximal number of signal events are about 11, although we cannot realize such model in the known supersymmetry breaking scenarios.