Physics:Theta meson
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Short description: Hypothetical form of quarkonium
| Composition | tt |
|---|---|
| Statistics | bosonic |
| Interactions | strong, weak, gravitational, electromagnetic |
| Status | hypothetical |
| antiparticle | self |
| electric charge | 0 e |
| Isospin | 0 |
| Hypercharge | 0 |
| Parity | −1 |
| C parity | −1 |
The theta meson (θ)[1] is a hypothetical form of quarkonium (i.e. a flavourless meson) formed by a top quark (t) and top antiquark (t). As a P-odd and C-odd tt state, it is analogous to the ϕ (ss), J/ψ (cc) and ϒ (bb) mesons. Due to the top quark's short lifetime, the theta meson is expected to not be observed in nature.[2]
See also
References
- ↑ Roos, M.; Wohl, C.G.. "Naming Scheme for Hadrons". http://pdg.lbl.gov/2014/reviews/rpp2014-rev-naming-scheme-hadrons.pdf.
- ↑ Fabiano, N. (1998). "Top mesons". European Physical Journal C 2 (2): 345–350. doi:10.1007/s100520050144. Bibcode: 1998EPJC....2..345F.
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