Physics:Bottom eta meson
From HandWiki
Composition | bb |
---|---|
Statistics | Bosonic |
Interactions | Strong, weak, electromagnetic, gravity |
Symbol | ηb |
antiparticle | Self |
Discovered | SLAC (2008) |
Types | 1 |
Mass | 9388.9+3.1 −2.3 MeV/c2 |
electric charge | 0 e |
Spin | 0 |
Isospin | 0 |
Hypercharge | 0 |
Parity | -1 |
C parity | +1 |
The bottom eta meson (ηb) or eta-b meson is a flavourless meson formed from a bottom quark and its antiparticle. It was first observed by the BaBar experiment at SLAC in 2008, and is the lightest particle containing a bottom and anti-bottom quark.
See also
- Eta and eta prime mesons, a similar particle with light quarks.
- Quarkonium, the general name for mesons formed from a quark and the corresponding antiquark.
- List of mesons
References
- Aubert, B. (2008). "Observation of the Bottomonium Ground State in the Decay ϒ(3S)→γηb". Physical Review Letters 101 (7): 071801. doi:10.1103/PhysRevLett.101.071801. PMID 18764521. Bibcode: 2008PhRvL.101g1801A.
- Godfrey, S. (2008). "Searching high and low for bottomonium". Physics 1: 11. doi:10.1103/Physics.1.11. Bibcode: 2008PhyOJ...1...11G. http://physics.aps.org/articles/v1/11.
Original source: https://en.wikipedia.org/wiki/Bottom eta meson.
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