T meson
T0
:
t
u
T+
:
t
d
T+
s:
t
s
T0
c:
t
c
T+
b:
t
b
T0
,
T+
,
T+
s,
T0
c,
T+
b
T0
:
T0
T+
:
T−
T+
s:
T−
s
T0
c:
T0
c
T−
b:
T+
b
T0
,
T0
c: 0 e
T+
,
T+
s,
T+
b: +1 e
T mesons are hypothetical mesons composed of a top quark and one additional subatomic particle. The second subatomic particle can be either an up quark (
T0
), down quark (
T+
), strange quark (
T+
s), charm quark (
T0
c) or bottom antiquark (
T+
b).[1] Because of the top quark's short lifetime, T mesons are not expected to be found in nature.[2]
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 (
T0
), down (
T−
), strange (
T−
s), charm quark (
T0
c) or bottom quark (
T−
b) respectively.
References
- ^ 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.
- ^ 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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