Abstract
As the field examines a future muon collider as a possible successor to the LHC, we must consider how to fully utilize not only the high-energy particle collisions, but also any lower-energy staging facilities necessary in the R&D process. An economical and efficient possibility is to use the accelerated muon beam from either the full experiment or from cooling and acceleration tests in beam-dump experiments. Beam-dump experiments are complementary to the main collider as they achieve sensitivity to very small couplings with minimal instrumentation. We demonstrate the utility of muon beam-dump experiments for new physics searches at energies from 10 GeV to 5 TeV. We find that, even at low energies like those accessible at staging or demonstrator facilities, it is possible to probe new regions of parameter space for a variety of generic BSM models, including muonphilic, leptophilic, Lμ − Lτ, and dark photon scenarios. Such experiments could therefore provide opportunities for discovery of new physics well before the completion of the full multi-TeV collider.
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Acknowledgments
We would like to thank Samuel Alipour-Fard for early discussions and contributions to this work. Additionally we thank Nima Arkani-Hamed, Dario Buttazzo, Nathaniel Craig, Karri DiPetrillo, Samuel Homiller, Sergo Jindariani, Yoni Kahn, Gordan Krnjaic, Patrick Meade, Federico Meloni, Rashmish Mishra, Julián Muñoz, Matthew Reece, John Stout, Jesse Thaler, Nhan Tran, and Andrea Wulzer for useful feedback and discussions. C.C. and R.G. are supported by the U.S. Department of Energy (DOE) Office of High Energy Physics under Grant Contract No. DE-SC0012567. C.C. would like to thank KITP, IAS, and Cornell University for their hospitality during the completion of this work.
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Cesarotti, C., Gambhir, R. The new physics case for beam-dump experiments with accelerated muon beams. J. High Energ. Phys. 2024, 283 (2024). https://doi.org/10.1007/JHEP05(2024)283
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DOI: https://doi.org/10.1007/JHEP05(2024)283