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May 12, 2014 at 6:49 history edited JamalS CC BY-SA 3.0
added 12 characters in body; edited title
May 12, 2014 at 3:43 comment added Zo the Relativist In principle, it's not hard to construct states with zero color out of four quarks, say if you have a bound state of a $\pi^{0}$ and an $\eta$ particle.
Apr 11, 2014 at 23:10 history tweeted twitter.com/#!/StackPhysics/status/454758345791262720
Apr 11, 2014 at 21:08 answer added Robin Ekman timeline score: 6
Apr 11, 2014 at 21:04 comment added Qmechanic More on tetraquarks: physics.stackexchange.com/q/107570/2451
Apr 11, 2014 at 21:00 history asked user6818 CC BY-SA 3.0