Mixed modulus and anomaly mediation in light of the muon g − 2 anomaly

• Main Authors: Kwang Sik Jeong, Junichiro Kawamura, Chan Beom Park
• Format: Article
• Language: English
• Published: SpringerOpen 2021-10-01
• Series: Journal of High Energy Physics
• Subjects: Supersymmetry Phenomenology
• Online Access: https://doi.org/10.1007/JHEP10(2021)064

Abstract The new measurement of the anomalous magnetic moment of muon at the Fermilab Muon g − 2 experiment has strengthened the significance of the discrepancy between the standard model prediction and the experimental observation from the BNL measurement. If new physics responsible for the muon g − 2 anomaly is supersymmetric, one should consider how to obtain light electroweakinos and sleptons in a systematic way. The gauge coupling unification allows a robust prediction of the gaugino masses, indicating that the electroweakinos can be much lighter than the gluino if anomaly-mediated supersymmetry breaking is sizable. As naturally leading to mixed modulus-anomaly mediation, the KKLT scenario is of particular interest and is found capable of explaining the muon g − 2 anomaly in the parameter region where the lightest ordinary supersymmetric particle is a bino-like neutralino or slepton.