Theta meson
Appearance
![]() Quark structure of the theta meson | |
Composition | t t |
---|---|
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 (
)[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
t
t
state, it is analogous to the
ϕ
(
s
s
),
J/
(
c
c
) and
ϒ
(
b
b
) mesons. Due to the top quark's short lifetime, the theta meson is expected to not be observed in nature.[2]
See also
[edit]References
[edit]- ^ Roos, M.; Wohl, C.G. "Naming Scheme for Hadrons" (PDF). lbl.gov. Retrieved 23 March 2022.
- ^ 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.