T meson

T meson

Composition	T0 : t u T+ : t d T+ s: t s T0 c: t c T+ b: t b
Statistics	bosonic
Family	meson
Interactions	strong, weak, gravitational, electromagnetic
Status	hypothetical
Symbol	T0 , T+ , T+ s, T0 c, T+ b
Antiparticle	T0 : T0 T+ : T− T+ s: T− s T0 c: T0 c T− b: T+ b
Electric charge	T0 , T0 c: 0 e T+ , T+ s, T+ b: +1 e
Topness	+1
Isospin	0

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 (
T⁰
), down antiquark (
T⁺
), strange antiquark (
T⁺
_s), charm antiquark (
T⁰
_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 (
T⁰
), down (
T⁻
), strange (
T⁻
_s), charm quark (
T⁰
_c) or bottom quark (
T⁻
_b) respectively.

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)