Revisiting CMSSM with non-universal gaugino masses under current constraints

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 g(similar to)-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 beta greater than or similar to 5 and M-0 greater than or similar to 20 tan beta GeV. Although the g(similar to)-SUGRA scenario can help reconcile the persistent (g - 2)(mu) anomaly, the Higgs constraints significantly restrict its parameter space, making a large contribution to (g - 2)(mu) 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 CLIC1500 at 2.5 ab(-1) - can comprehensively probe the remaining regions. These findings highlight g(similar to)-SUGRA as a promising solution to the CMSSM tension and offer clear, testable predictions for upcoming collider searches.