Z(4430) is a mesonic resonance discovered by the Belle experiment. It has a mass of 4430 MeV/c2. This resonance has been confirmed by the LHCb experiment with a significance of at least 13.9 σ. The particle is charged and is thought to have a quark content of ccdu, making it a tetraquark candidate. It has the spin-parity quantum numbers JP = 1+.
- Choi, S.-K.; et al. (
- "Belle Discovers a New Type of Meson" (Press release).
- LHCb collaboration (2014). "Observation of the resonant character of the Z(4430)− state". arXiv:1404.1903v1.
- Cian O'Luanaigh (9 April 2014). "LHCb confirms existence of exotic hadrons". CERN.
- "Unambiguous observation of an exotic particle which cannot be classified within the traditional quark model". European Organization for Nuclear Research. 9 April 2014.
- Major harvest of four-leaf clover