Talk:Isospin

  • I disagree with removing my paragraph on SU(6) and symmetry breaking. It's an extra paragraph (and one I thought was decently written) and isospin always confused me until I knew that information (I'm a physicist). It's important to also consider the readers of the page, high-school kids are not going to be learning about isospin. This is a page most likely visited by undergraduate physics majors, who are looking for the connections to the big picture. Jason Quinn 00:51, 9 Jul 2004 (UTC)


Hello, Jason. Here's is some kind of justification for removing that paragraph
  1. Connections to the big picture are already available as wikilinks to articles on flavor and strong interaction etc. And while it definitely helps to connect it to the big picture more explicitly, the content of that paragraph more rightly belonged to the article on flavor, or quark.
  2. Secondly, it isn't too clear what you mean by adjectives like "good symmetry", "the Eightfold Way is okay" and "badly broken". While I am sure they are part of the jargon which you use as a practising physicist, they are IMHO not the sort of sentences that should live in an encyclopaedic article.
  3. Thirdly, and IMextremelyHO again, sentences like "a results of just the up and down quarks", and "flavor includes all known quarks" are both obfuscatory in meaning, and also physically incorrect (of course, based on what little physics I know).
  4. Incidentally, but no less importantly, it isn't "your" paragraph anymore - you sort of gave it away to be beaten up and kicked around around by everyone on Wikipedia when you pressed that submit button
  5. And, very incidentally, there is no reason why high school kids should not be interested in reading about isospin - I did, when I was in that category.
Regards, [[User:AmarChandra|Amar | Talk]] 05:56, Jul 9, 2004 (UTC)
Exorcised paragraph reproduced below for convenience
In high-energy physics, isospin is considered a subgroup of a larger symmetry group, the Eightfold Way, which is itself a subgroup of SU(6) flavor. Every new quark introduces a larger symmetry group. Isospin was a results of just the up and down quarks (u and d), which are nearly the same mass. The Eightfold Way includes the strange quark (s), which is somewhat heavier. Flavor includes all known quarks, adding charm, bottom, and top (c, b, and t). However the masses of the other quarks are significantly different than the up and down quarks so the strong force is not symmetric with respect to interchange of particles. The symmetry is said to be more and more broken the more the masses differ. Isospin is a good symmetry, the Eightfold Way is okay, and flavor is badly broken.
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