The fact that the 1 } } rho meson ( & rho; ) and 0 } } omega meson ( & omega; ) have nearly equal mass centered on 770, while the phi meson ( & phi; ) has a higher mass around, indicates that the light-quark vector mesons appear in nearly pure states with the & phi; meson having a nearly 100 percent amplitude of hidden strangeness.
22.
:I don't know about any kind of bound state either, but I would expect that the proton's down quark and one of the anti-neutron's down anti-quarks as well as one of the proton's annihilate quickly, leaving a meson made up of an up quark and a down anti-quark ( e . g . a pion or a rho meson ) . talk ) 13 : 37, 5 June 2011 ( UTC)