3 ms·
I'd leapt at the title, thinking that the article claimed evidence for a fourth-generation (u,d), (c,s), (t,b), (something new) quark, which would be incredibl
by ISL 13y ago
I'd leapt at the title, thinking that the article claimed evidence for a fourth-generation (u,d), (c,s), (t,b), (something new) quark, which would be incredible news. This article describes the potential observation of a four-quark bound system, made up of known quarks in a novel arrangement.
- jessriedel 13y agoAlthough a 4th generation would certainly be a bigger deal, tetraquarks have never been seen and would have important implications for our understanding of QCD. http://en.wikipedia.org/wiki/Tetraquark http://en.wikipedia.org/wiki/Tetraquark
- jwuphysics 13y agoAlthough a tetraquark particle is possible, the Z(3900) might also be explained by two weakly bound mesons (two-quark particles)--which would be less interesting and more likely, in my humble opinion.