leptonium
nounEtymology Blend of lepton + onium.
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Natural sciences, Physical sciences, Physics Particle A bound pair of a lepton and its antiparticle
- The LHC constraints on exotic stable massive charged particles seem to further shrink the allowed range for the hypercharge down to Y#95;#123;#92;ell#125;#92;approx 8-8.9, with the caveat that the relation between the leptonium mass and the mass of the constituent leptons in our calculations is plagued with a large theoretical uncertainty for large Y#95;#123;#92;ell#125;.2016, Neil D. Barrie, Archil Kobakhidze, Shelley Liang, Matthew Talia, Lei Wu, “Heavy Leptonium as the Origin of the 750 GeV Diphoton Excess”, in arXiv: