A muon collider would be a powerful probe of flavor violation in new physics. There is a strong complementary case for collider measurements and precision low-energy probes of lepton flavor violation (as well as CP violation). We illustrate this by studying the collider reach in a supersymmetric scenario with flavor-violating slepton mixing. We find that the collider could discover sleptons and measure the slepton and neutralino masses with high precision, enabling event reconstruction that could cleanly separate flavor-violating new physics signals from Standard Model backgrounds. The discovery reach of a high-energy muon collider would cover a comparably large, and overlapping, range of parameter space to future μ → e conversion and electron EDM experiments, and unlike precision experiments could immediately shed light on the nature of new physics responsible for flavor violation. This complementarity strengthens the case that a muon collider could be an ideal energy-frontier laboratory in the search for physics beyond the Standard Model.
Homiller, Samuel, et al. "Complementary signals of lepton flavor violation at a high-energy muon collider." Journal of High Energy Physics (Online), vol. 2022, no. 7, Jul. 2022. https://doi.org/10.1007/jhep07(2022)036
Homiller, Samuel, Lu, Qianshu, & Reece, Matthew (2022). Complementary signals of lepton flavor violation at a high-energy muon collider. Journal of High Energy Physics (Online), 2022(7). https://doi.org/10.1007/jhep07(2022)036
Homiller, Samuel, Lu, Qianshu, and Reece, Matthew, "Complementary signals of lepton flavor violation at a high-energy muon collider," Journal of High Energy Physics (Online) 2022, no. 7 (2022), https://doi.org/10.1007/jhep07(2022)036
@article{osti_1976492,
author = {Homiller, Samuel and Lu, Qianshu and Reece, Matthew},
title = {Complementary signals of lepton flavor violation at a high-energy muon collider},
annote = {A muon collider would be a powerful probe of flavor violation in new physics. There is a strong complementary case for collider measurements and precision low-energy probes of lepton flavor violation (as well as CP violation). We illustrate this by studying the collider reach in a supersymmetric scenario with flavor-violating slepton mixing. We find that the collider could discover sleptons and measure the slepton and neutralino masses with high precision, enabling event reconstruction that could cleanly separate flavor-violating new physics signals from Standard Model backgrounds. The discovery reach of a high-energy muon collider would cover a comparably large, and overlapping, range of parameter space to future μ → e conversion and electron EDM experiments, and unlike precision experiments could immediately shed light on the nature of new physics responsible for flavor violation. This complementarity strengthens the case that a muon collider could be an ideal energy-frontier laboratory in the search for physics beyond the Standard Model.},
doi = {10.1007/jhep07(2022)036},
url = {https://www.osti.gov/biblio/1976492},
journal = {Journal of High Energy Physics (Online)},
issn = {ISSN 1029-8479},
number = {7},
volume = {2022},
place = {United States},
publisher = {Springer Nature},
year = {2022},
month = {07}}
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 807https://doi.org/10.1016/j.nima.2015.10.097