View source for Physics:Bottom eta meson

{{Infobox particle
| name = Bottom eta [[Physics:Meson|meson]]  ({{Subatomic particle|Bottom Eta}})
| image = 
| caption = 
| num_types = 1
| composition = {{Subatomic particle|Bottom quark}}{{Subatomic particle|Bottom antiquark}}
| statistics = [[Physics:Bosonic|Bosonic]]
| group = [[Physics:Meson|Meson]]s
| interaction = [[Physics:Strong interaction|Strong]], [[Physics:Weak interaction|weak]], electromagnetic, [[Physics:Gravity|gravity]]
| antiparticle = Self
| status = 
| theorized = 
| discovered = [[Organization:SLAC|SLAC]] (2008)
| symbol = {{Subatomic particle|Bottom Eta}}
| mass = {{val|9388.9|+3.1|-2.3|ul=MeV/c2}}
| mean_lifetime = 
| decay_particle =
| electric_charge = 0 [[Physics:Elementary charge|e]]
| spin = 0
| strangeness = 
| charm = 
| bottomness = 
| topness = 
| isospin = 0
| hypercharge = 0
| parity = -1
| c_parity = +1
}}

The '''bottom eta meson''' ({{Subatomic particle|Bottom Eta}}) or '''eta-b meson''' is a [[Physics:Flavour (particle physics)|flavourless]] [[Physics:Meson|meson]] formed from a [[Physics:Bottom quark|bottom quark]] and its [[Physics:Antiparticle|antiparticle]]. It was first observed by the [[Physics:BaBar experiment|BaBar experiment]] at [[Organization:SLAC|SLAC]] in 2008, and is the lightest particle containing a bottom and anti-bottom quark.

==See also==
* [[Physics:Eta and eta prime mesons|Eta and eta prime mesons]], a similar particle with light quarks.
* [[Physics:Quarkonium|Quarkonium]], the general name for mesons formed from a [[Physics:Quark|quark]] and the corresponding antiquark.
* [[Physics:List of mesons|List of mesons]]

==References==
# {{cite journal | author=Aubert, B. | title=Observation of the Bottomonium Ground State in the Decay {{Subatomic particle|Upsilon}}(3S)→{{Subatomic particle|Photon}}{{Subatomic particle|Bottom eta}} | journal=Physical Review Letters | year=2008 | volume=101 | pages=071801 | doi=10.1103/PhysRevLett.101.071801 | pmid=18764521 | issue=7 | bibcode=2008PhRvL.101g1801A | display-authors=0 |arxiv = 0807.1086 | s2cid=17291017 }}
# {{cite magazine| author= Godfrey, S. | title=Searching high and low for bottomonium| magazine=Physics | year=2008 | volume=1 | pages=11 | doi=10.1103/Physics.1.11 | url=http://physics.aps.org/articles/v1/11|bibcode = 2008PhyOJ...1...11G | doi-access=free }}

{{Particles}}

[[Category:Mesons]]



{{Sourceattribution|Bottom eta meson}}