a1-meson (changes) in nLab
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Context
Fields and quanta
fields and particles in particle physics
and in the standard model of particle physics:
matter field fermions (spinors, Dirac fields)
| flavors of fundamental fermions in the standard model of particle physics: | |||
|---|---|---|---|
| generation of fermions | 1st generation | 2nd generation | 3d generation |
| quarks (qq) | |||
| up-type | up quark (uu) | charm quark (cc) | top quark (tt) |
| down-type | down quark (dd) | strange quark (ss) | bottom quark (bb) |
| leptons | |||
| charged | electron | muon | tauon |
| neutral | electron neutrino | muon neutrino | tau neutrino |
| bound states: | |||
| mesons | light mesons: pion (udu d) ρ-meson (udu d) ω-meson (udu d) f1-meson a1-meson | strange-mesons: ϕ-meson (ss¯s \bar s), kaon, K*-meson (usu s, dsd s) eta-meson (uu+dd+ssu u + d d + s s) charmed heavy mesons: | bottom heavy mesons: B-meson (qbq b) ϒ-meson (bb¯b \bar b) |
| baryons | nucleons: proton (uud)(u u d) neutron (udd)(u d d) |
(also: antiparticles)
hadrons (bound states of the above quarks)
minimally extended supersymmetric standard model
bosinos:
dark matter candidates
Exotica
Contents
Idea
The a 1a_1-meson is the light meson which (in the Wigner classification) is the Lorentz spin group pseudo-vector representation as well as the isospin vector representation.
This is the chiral partner of the rho-meson.
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References
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Stefan Leupold, Markus Wagner, Chiral Partners in a Chirally Broken World, International Journal of Modern Physics A Vol. 24, No. 02n03, pp. 229-236 (2009) (arXiv:0807.2389)
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A. E. Dorokhova, N. I. Kochelevba. A. P. Martynenkoc. F. A. Martynenkoc. A. E. Radzhabovb, The contribution of axial-vector mesons to hyperfine structure of muonic hydrogen, Physics Letters B Volume 776, 10 January 2018, Pages 105-110 Physics Letters B (doi:10.1016/j.physletb.2017.11.027)
Last revised on May 8, 2020 at 18:53:15. See the history of this page for a list of all contributions to it.