psi particle
[ sahy, psahy ]
/ saɪ, psaɪ /
noun Physics.
any of a family of mesons consisting of a charmed quark and a charmed antiquark.
an early name for the J/psi particle.
Origin of psi particle
First recorded in 1970–75
Words nearby psi particle
pseudoxanthoma elasticum,
psf,
psg,
pshaw,
psi,
psi particle,
psi phenomenon,
psia,
psid,
psig,
psilanthropism
British Dictionary definitions for psi particle
Scientific definitions for psi particle (1 of 2)
psi particle
[ sī, psī ]
See J/psi particle.
Scientific definitions for psi particle (2 of 2)
psi′ particle
[ sī′prīm′, psī′- ]
An electrically neutral meson having a mass 7,213 times that of the electron and a mean lifetime of approximately 1 X 10-20 seconds, composed, like the J/psi particle, of a charm-anticharm quark pair. See Table at subatomic particle.