The paper predicts effective true muonium production cross sections of 1.23 μb in 200 GeV AuAu and 14.2 μb in 5.02 TeV PbPb collisions, corresponding to O(10^4) and O(10^5) atoms per billion central events.
Hyperfine Splitting in True Muonium to $\mathcal{O}(m_\mu\alpha^6)$: Two Photon Annihilation Contribution from Other Flavors
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abstract
The two-photon-annihilation contribution to the true muonium hyperfine splitting arising from $e$ and $\tau$ loops is obtained analytically at order $m_\mu\alpha^6$. The contribution to the hyperfine splitting is $-2.031092873 m_\mu\alpha^6/n^3\pi^2=-793.926988/n^3$ MHz. The contribution to the triplet true muonium decay rate has also been obtained and was found to be $9.825708266 m_\mu\alpha^6/n^3\pi^2=3840.737698/n^3$ MHz. Additional results have been computed for other purely leptonic bound states.
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Searching for True Muonium in Relativistic Heavy Ion Collisions
The paper predicts effective true muonium production cross sections of 1.23 μb in 200 GeV AuAu and 14.2 μb in 5.02 TeV PbPb collisions, corresponding to O(10^4) and O(10^5) atoms per billion central events.