The anomalies that break B and L individually cancel exactly to conserve B−L. See, for example, the end of the SM section of Phenomenological guide to physics beyond the Standard Model. In fact, you can (in Beyond-the-SM models) gauge the B−L symmetry. Of course, you can also break the symmetry in some SuSy models, but that's decidedly beyond-the-SM. -- Xerxes 18:25, 19 December 2005 (UTC)[reply]__DTELLIPSISBUTTON__{"threadItem":{"timestamp":"2005-12-19T18:25:00.000Z","author":"Xerxes314","type":"comment","level":1,"id":"c-Xerxes314-2005-12-19T18:25:00.000Z-B\u2212L","replies":[],"displayName":"Xerxes"}}-->
This is more than just the flavour associated quantum numbers. Perhaps we should rename it just "quantum numbers"? --Michael C. Price talk 23:27, 11 November 2008 (UTC)[reply]__DTELLIPSISBUTTON__{"threadItem":{"timestamp":"2008-11-11T23:27:00.000Z","author":"MichaelCPrice","type":"comment","level":1,"id":"c-MichaelCPrice-2008-11-11T23:27:00.000Z-More_than_Flavour","replies":["c-Dogbert66-2011-01-24T09:30:00.000Z-MichaelCPrice-2008-11-11T23:27:00.000Z"],"displayName":"Michael C. Price"}}-->
Why do we not call Up and Down flavour quantum numbers? They are conserved by the strong force, are they not? --Michael C. Price talk 23:29, 11 November 2008 (UTC)[reply]__DTELLIPSISBUTTON__{"threadItem":{"timestamp":"2008-11-11T23:29:00.000Z","author":"MichaelCPrice","type":"comment","level":1,"id":"c-MichaelCPrice-2008-11-11T23:29:00.000Z-Up_and_Down","replies":[],"displayName":"Michael C. Price"}}-->
Topness and weak isospin both are denoted by T. This is an ambiguosity like denoting bottomness and baryon number both by B. The latter was resolved in denoting bottomness by B' (sometimes B* used). Shouldn't we do the same for topness, i. e. using a T' as symbol? We could leave Tz aka T3 as it is. --ErnstS talk 12:55, 31 January 2009 (CET)
A better proposal might be to leave T as the sign for topness. Instead, we might use IW for weak isospin (just like YW for weak hypercharge) instead of the ambiguous T, and IW3 or IWz for its 3rd component (instead of T3 or Tz).--ErnstS talk 10:20, 19 February 2009 (CET)
This template uses Iz as a denotation for the 3rd component of isospin rather than I3 (same for weak isospin, currently Tz instead of T3). When I changed some articles in english and german WP I messed up with several Z-s (also used as index). These are:
1) z (lowercase) as denotation for the 3rd component instead of 3
2) Z (uppercase) for the Z Boson
3) z (lowercase) for dimensionless charge number, i.e. the charge measured in units of the elementary charge e. This is used if there is a need for disambiguation with the Charge Q = z • e . For atoms this is identical with the atomic number Z (uppercase).
Especially for discussion of the electroweak interaction couplings, all three z's mess up, terrible :-( ! German example: de:schwache Ladung
What do you think about using 3 instead of z for the 3rd component, i.e. I3 for 3rd component of isospin, T3 (or maybe IW3) as 3rd component of weak isospin?
Thanks in advance for any comments --Ernsts (talk) 20:35, 10 March 2009 (UTC)[reply]__DTELLIPSISBUTTON__{"threadItem":{"timestamp":"2009-03-10T20:35:00.000Z","author":"Ernsts","type":"comment","level":1,"id":"c-Ernsts-2009-03-10T20:35:00.000Z-Third_component_of_isospin_and_weak_isospin","replies":["c-Michael_C_Price-2009-11-01T22:37:00.000Z-Ernsts-2009-03-10T20:35:00.000Z","c-Michael_C_Price-2009-11-07T00:39:00.000Z-Ernsts-2009-03-10T20:35:00.000Z"]}}-->
The title was overlaid with text. This was caused by the {{Tnavbar-header}} so I removed it. I suggest not replacing the {{Tnavbar-header}} unless you can solve the typesetting problem using it causes.Puzl bustr (talk) 14:11, 30 November 2009 (UTC)[reply]__DTELLIPSISBUTTON__{"threadItem":{"timestamp":"2009-11-30T14:11:00.000Z","author":"Puzl bustr","type":"comment","level":1,"id":"c-Puzl_bustr-2009-11-30T14:11:00.000Z-Removed_typesetting_problem","replies":[]}}-->
On the wiki site for "Hypercharge" it says Y = B + S - (C - B' + T)/3 while the template says Y = (B + S + C + B′ + T) below "Combinations / Hypercharge: Y" 46.142.91.204 (talk) 14:20, 14 February 2024 (UTC)[reply]__DTELLIPSISBUTTON__{"threadItem":{"timestamp":"20240214142000","author":"46.142.91.204","type":"comment","level":1,"id":"c-46.142.91.204-20240214142000-Different_formulas_for_Hypercharge??","replies":[]}}-->
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