The new $$(g-2)_\mu $$ result and the $$\mu \nu $$SSM

SVEN HEINEMEYER, ESSODJOLO KPATCHA, IÑAKI LARA, DANIEL E. LOPEZ -FOGLIANI, CARLOS MUÑOZ, NATSUMI NAGATA

EUROPEAN PHYSICAL JOURNAL C - PARTICLES AND FIELDS

SPRINGER

Lugar: Berlin; Año: 2021 vol. 81

1434-6044

The μνSSM is a highly predictive alternative model to the MSSM. Inparticular, the electroweak sector of the model can explain thelongstanding discrepancy between the experimental result for theanomalous magnetic moment of the muon, (g−2)μ, and its StandardModel prediction, while being in agreement with all other theoreticaland experimental constraints. The recently published MUON G-2 resultis within 0.8σ in agreement with the older BNL result on (g−2)μ.The combined result was announced as aμexp=(11659206.1±4.1)×10−10,yielding a new deviation from the Standard Model prediction ofΔaμ=(25.1±5.9)×10−10,corresponding to 4.2σ. Using this improved bound we update theanalysis in the μνSSM as presented in Ref. [1] and set new limitson the allowed parameters space of the electroweak sector of themodel. We conclude that significant regions of the model can explainthe new (g−2)μdata.p { margin-bottom: 0.25cm; line-height: 120%; background: transparent }a:link { color: #000080; so-language: zxx; text-decoration: underline }