The pseudoscalar mesons have quark and antiquark spins antialigned and zero orbital angular momentum, resulting in j=0. They have negative parity. The diagrams are plotted with strangeness on the vertical axis and isospin on the horizontal axis.

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The vector mesons have quark and antiquark spins aligned and zero orbital angular momentum, resulting in j=1. They have negative parity. The diagrams are plotted with strangeness on the vertical axis and isospin on the horizontal axis. The rho vector meson has a mass dramatically larger than the pseudoscalar pi meson which has the same quark content, illustrating the extraordinary variation of effective quark masses.

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The diagrams are plotted with strangeness on the vertical axis and isospin projection on the horizontal axis.

Index Particle concepts  

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The diagrams are plotted with strangeness on the vertical axis and isospin projection on the horizontal axis.

Index Particle concepts  

Go Back 