The Production and Discovery of True Muonium in Fixed-Target Experiments

Abstract

Upcoming fixed-target experiments designed to search for new sub-GeV forces will also have sensitivity to the never before observed True Muonium atom, a bound state of a muon and anti-muon. We describe the production and decay characteristics of True Muonium relevant to these experiments. Importantly, we find that secondary production mechanisms dominate over primary production for the long-lived 2S and 2P states, leading to total yields an order of magnitude larger than naive estimates previously suggested. We present yield estimates for True Muonium as a function of energy fraction and decay length, useful for guiding future experimental studies. Discovery and measurement prospects appear very favorable.

5 pages, 5 figures, submitted to PRD

References in corpus (3)

• New Fixed-Target Experiments to Search for Dark Gauge Forces
• Muonic hydrogen and MeV forces
• Production of the Smallest QED Atom: True Muonium (mu^+ mu^-)

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• Hadron Spectroscopy and Dynamics from Light-Front Holography and Superconformal Algebra
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• Alternative implementation of atomic form factors
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• Supersymmetric Meson-Baryon Properties of QCD from Light-Front Holography and Superconformal Algebra
• Novel QCD Phenomena at JLab
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