Composition bb Symbol η
b Spin 0 | Statistics Bosonic Electric charge 0 C | |
Mass 7003938890000000000♠9388.9+3.1
−2.3 ± 7000270000000000000♠2.7 MeV/c | ||
The bottom eta meson (
η
b) or eta-b meson is a flavorless 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.
References
Bottom eta meson Wikipedia(Text) CC BY-SA