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A little question: is x-boson included in su(5)?

  1. Oct 2, 2006 #1
    A little question:

    is x-boson included in su(5)? (or in some generalization of it) :uhh:
     
  2. jcsd
  3. Oct 2, 2006 #2

    garrett

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    Gold Member

    Yes.

    The su(5) Lie algebra has 24 dimensions -- so 24 gauge bosons. In the su(5) GUT, 4 of these get identified with the electroweak, W and Z, bosons and 8 get identified with the gluons, G. This leaves 12 gauge bosons -- the X -- which are given large masses to explain why we haven't seen them.
     
  4. Oct 2, 2006 #3
    Thank you! :smile:
     
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