Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-07-20
Phys.Rev.D76:115001,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
24 pages. Additional figure showing energy-dependence of total cross section, minor changes to text. Conclusions unaltered. Th
Scientific paper
10.1103/PhysRevD.76.115001
Recently, muon production in electron-proton scattering has been suggested as a possible candidate reaction for the identification of lepton-flavor violation due to physics beyond the Standard Model. Here we point out that the Standard-Model processes $e^- p \to \mu^- p \bar{\nu}_\mu \nu_e$ and $e^- p \to e^- n \mu^+ \nu_\mu$ can cloud potential beyond-the-Standard-Model signals in electron-proton collisions. We find that Standard-Model $e p \to \mu X$ cross sections exceed those from lepton-flavor-violating operators by several orders of magnitude. We also discuss the possibility of using a nuclear target to enhance the $e p \to \mu X$ signal.
Jaikumar Prashanth
Phillips Daniel R.
Platter Lucas
Prakash Madappa
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