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T mesons are hypothetical mesons composed of a top quark and one additional subatomic particle. The second subatomic particle can be either an up antiquark (
T
), down antiquark (
T
), strange antiquark (
T
_s), charm antiquark (
T
_c) or bottom antiquark (
T
_b). Because of the top quark's short lifetime, T mesons are not expected to be found in nature.

The combination of a top quark and top antiquark is not an open T meson, but rather a closed top-quark meson called toponium. Each T meson has an antiparticle that is composed of a top antiquark and an up (
T
), down (
T
), strange (
T
_s), charm quark (
T
_c) or bottom quark (
T
_b) respectively.

References

1. C. Amsler; et al. (2008). "Review of Particle Physics: Naming Scheme for Hadrons" (PDF). Physics Letters B. 667 (1). Particle Data Group: 1. Bibcode:2008PhLB..667....1A. doi:10.1016/j.physletb.2008.07.018. hdl:1854/LU-685594. S2CID 227119789.
2. Fabiano, N. (1998). "Top mesons". European Physical Journal C. 2 (2): 345–350. arXiv:hep-ph/9704261. Bibcode:1998EPJC....2..345F. doi:10.1007/s100520050144. S2CID 17321939.

External links

• W.-M. Yao et al. (Particle Data Group), J. Phys. G 33, 1 (2006) and 2007 partial update for edition 2008 (URL: http://pdg.lbl.gov)

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