An electron-muon collider: what can be probed with it?


  • Antonio Osvaldo Bouzas Cinvestav-Merida
  • Francisco Larios Cinvestav-Merida



electron-muon, two-to-two process


Collisions of electrons against muons provide a very clean environment for many beyond SM signals. We consider the case of two-to-two flavor changing processes that are absent in the SM. The sensitivity of the e-muon collider to the four-fermion dimension six operators is about the same order of magnitude as the one based on low energy measurements.


V. Barger, S. Pakvasa and X. Tata, Are eµ colliders interesting?, Phys. Lett. B 415 (1997) 200,

A. Bhardwaj, C. Englert and P. Stylianou, Implications of the muon anomalous magnetic moment for the LHC and MUonE, Phys. Rev. D 106 (2022) 075031,

S. Y. Choi et al., High-energy FCNC search through eµ colliders, Phys. Rev. D 57 (1998) 7023,

J. C. Montero, V. Pleitez and M. C. Rodriguez, Left-right asymmetries in polarized e - µ scattering, Phys. Rev. D 58 (1998) 097505,

G. Cvetič and C. S. Kim, Heavy Majorana neutrino production at electron - muon colliders, Phys. Lett. B 461 (1999) 248, [erratum: Phys. Lett. B 471 (2000) 471],

F. Almeida et al., Single neutral heavy lepton production at electron-muon colliders, Phys. Lett. B 494 (2000) 273,

J. K. Singhal, S. Singh, and A. K. Nagawat, Possible exotic neutrino signature in electron muon collisions (2007),

M. Casarsa, Prospects of a future multi-TeV muon collider, SciPost Phys. Proc. 8 (2022) 061,

F. Bossi, and P. Ciafaloni, Lepton Flavor Violation at muonelectron colliders, JHEP 2020 (2020) 33,

M. Lu, et al., The physics case for an electron-muon collider, Adv. High Energy Phys. 2021 (2021) 6693618,

A. O. Bouzas, and F. Larios, Two-to-Two Processes at an Electron-Muon Collider, Adv. High Energy Phys. 2022 (2022) 3603613,

S. Davidson, Completeness and complementarity for µ → eγµ → eee¯ and µA → eA, JHEP 2021 (2021) 172,

B. Grzadkowski et al., Dimension-six terms in the Standard Model Lagrangian, JHEP 10 (2010) 085,

M. Ardu, and S. Davidson, What is Leading Order for LFV in SMEFT?, JHEP 2021 (2021) 2,

L. Lehman, Extending the Standard Model Effective Field Theory with the Complete Set of Dimension-7 Operators, Phys. Rev. D 90 (2014) 125023,

Li, Hao-Lin and Ren, Zhe and Shu, Jing and Xiao, MingLei and Yu, Jiang-Hao and Zheng, Yu-Hui, Complete set of dimension-eight operators in the standard model effective field theory, Phys. Rev. D 104 (2021) 015026,

S. Davidson, and Y. Kuno, and Y. Uesaka, and M. Yamanaka, Probing µeγγ contact interactions with µ → e conversion, Phys. Rev. D 102 (2020) 115043,

J. Alwall et al., MadGraph 5: Going Beyond, JHEP 06 (2011) 128,

J. De Favereau et al., DELPHES 3, A modular framework for the fast simulation of a generic collider experiment, JHEP 2014 (2014) 57,




How to Cite

Bouzas AO, Larios F. An electron-muon collider: what can be probed with it?. Supl. Rev. Mex. Fis. [Internet]. 2023 Nov. 6 [cited 2023 Dec. 11];4(2):021128 1-5. Available from: