Year: 2025
Type: article
Abstract: A bstract To address the longstanding tension between the Constrained Minimal Supersymmetric Standard Model (CMSSM) and recent experimental data, we investigate non-universal gaugino masses within an SU(5) Grand Unified Theory (GUT) framework, focusing on the $$ \overset{\sim }{g} $$ g ~ -SUGRA scenario where | M 3 | ≫ | M 1 | , | M 2 |. This hierarchy enables a heavier gluino, thereby evading current experimental bounds on supersymmetric particles. Our analysis reveals that precise Higgs measurements place stringent constraints on the model, requiring tan β ≳ 5 and M 0 ≳ 20 tan β GeV . Although the $$ \overset{\sim }{g} $$ g ~ -SUGRA scenario can help reconcile the persistent ( g − 2) μ anomaly, the Higgs constraints significantly restrict its parameter space, making a large contribution to ( g − 2) μ challenging. We also assess the discovery prospects in upcoming dark matter direct detection experiments, including PandaX-xT (200 t.y.), LZ (projected), and XENONnT (20 t.y.), which may not fully cover the viable parameter space. In contrast, future collider experiments — such as the High-Luminosity LHC at 3 ab − 1 and CLIC 1500 at 2 . 5 ab − 1 — can comprehensively probe the remaining regions. These findings highlight $$ \overset{\sim }{g} $$ g ~ -SUGRA as a promising solution to the CMSSM tension and offer clear, testable predictions for upcoming collider searches.
Source: Journal of High Energy Physics
Authors: Yabo Dong, Kun Wang, Hailong Yuan, Jingya Zhu, Pengxuan Zhu
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
Award: G3456084711
OpenAlex ID: W4409245424