Unformatted text preview: interactions in this world). Estimate the following matrix elements (also between spin up baryon states at rest): h P | ¯ uγ d | N i h Σ + | ¯ sγ d | P i and explain your reasoning. The results should be close to what you expect from perfect SU (3) symmetry. Note that the signs matter here and I have tried to get the sign of the given matrix element right in the sense of being close to the conventional SU (3) value. But the signs are somewhat convention dependent, so you should explain how you are trying to get them right, but we won’t take anything off if you don’t. 1...
View Full Document
- Spring '10
- Physics, Quark, baryon states, quark mass, quark mass matrix, different quark mass