IAS Amplitudes Group Meeting

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Abstract: A clear outcome of Snowmass 2021 was the community support for R&D towards a future muon collider. We propose a new beam dump experiment at a future TeV-scale muon collider, and the demonstrator facilities along the way. A beam dump would be an economical and effective way to increase the discovery potential of the collider complex in a complementary regime. In this work we consider vector models such as the dark photon and Lμ−Lτ gauge boson as new physics candidates and explore which novel regions of parameter space can be probed with a muon beam dump. We find that, at the full center of mass energies, for the dark photon model, we gain sensitivity in the moderate mass (MeV - GeV) range at both higher and lower couplings compared to existing and proposed experiments, and gain access to previously untouched areas of parameter space of the Lμ−Lτ model. In this talk, we will also cover the basics towards the feasibility of a muon collider, as well as the physics potential at various demonstrator facilities on the way to R&D for the full 10+ TeV collider.