Gaugino mediation scenarios for muon g-2 and dark matter
Peter Cox, Chengcheng Han, Tsutomu T Yanagida, Norimi Yokozaki
Journal of High Energy Physics | SPRINGER | Published : 2019
We explore the possibility that the muon g − 2 anomaly and the nature of dark matter can be simultaneously explained within the framework of gaugino mediation, focusing on bino-like dark matter where the observed abundance is obtained via co-annihilations. The minimal model with non-universal gaugino masses is excluded by stau vacuum instability, although this constraint can be somewhat relaxed via the addition of a universal soft scalar mass (or B − L gaugino mediation). A more promising alternative is gaugino+Higgs mediation, which significantly raises the soft masses of the third generation sfermions leading to a split spectrum. In this framework, the muon g − 2 can be easily explained an..View full abstract
Awarded by Ministry of Education, Culture, Sports, Science, and Technology (MEXT), Japan
This work is supported by Grants-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT), Japan, No. 26104001 (T.T.Y.), No. 26104009 (T.T.Y.), No. 16H02176 (T.T.Y.), No. 17H02878 (T.T.Y.), No. 15H05889 (N.Y.), No. 15K21733 (N.Y.), No. 17H05396 (N.Y.) and No. 17H02875 (N.Y.), and by the World Premier International Research Center Initiative (WPI), MEXT, Japan (P.C., C.H. and T.T.Y.).