Physics:Bottom eta meson

From HandWiki
Bottom eta meson (ηb)
Compositionbb
StatisticsBosonic
InteractionsStrong, weak, electromagnetic, gravity
Symbolηb
antiparticleSelf
DiscoveredSLAC (2008)
Types1
Mass9388.9+3.1
−2.3
 MeV/c2
electric charge0 e
Spin0
Isospin0
Hypercharge0
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

References

  1. 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. Bibcode2008PhRvL.101g1801A. 
  2. Godfrey, S. (2008). "Searching high and low for bottomonium". Physics 1: 11. doi:10.1103/Physics.1.11. Bibcode2008PhyOJ...1...11G. http://physics.aps.org/articles/v1/11.