Kavli Affiliate: Gordan Krnjaic
| First 5 Authors: Rodolfo Capdevilla, David Curtin, Yonatan Kahn, Gordan Krnjaic,
| Summary:
We comprehensively study all viable new-physics scenarios that resolve the
muon $(g-2)_mu$ anomaly with only Standard Model singlet particles coupled to
muons. Since such models are only viable in the MeV — TeV mass range and
require sizable muon couplings, they predict abundant accelerator production
through the same interaction that resolves the anomaly. We find that a
combination of fixed-target (NA64$mu$, $M^3$), $B$-factory (BABAR, Belle II),
and collider (LHC, muon collider) searches can cover nearly all viable singlets
scenarios, independently of their decay modes. In particular, future muon
collider searches offer the only certain test of singlets above the GeV scale,
covering all higher masses up to the TeV-scale unitarity limit for these
models. Intriguingly, we find that $mathcal{O}(100~mathrm{GeV})$ muon
colliders may yield better coverage for GeV-scale singlets compared to
TeV-scale concepts, which has important implications for the starting
center-of-mass energy of a staged muon collider program.
| Search Query: ArXiv Query: search_query=au:”Gordan Krnjaic”&id_list=&start=0&max_results=10