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Running of the weak coupling

  1. Jun 11, 2010 #1
    Dear all,

    would anybody know of references regarding experimental constraints on the running of the weak coupling ? This running is rather slow, and I guess we do not have evidence one way or the other, but since the SM and the MSSM have opposite slopes, I'd like to see what kind of improvement is needed. Also, there might be threshold corrections making the running of the weak coupling in the SM and SUSY quite similar until ~ 1 TeV, I have a hard time to see on huge scale log plots.

    Thank you in advance for sharing.
  2. jcsd
  3. Jun 12, 2010 #2
    After thinking about it, it seems this plot summarizes it all :
    One should expect a change in the running above the electroweak mass but we do not have better yet.

    I would still appreciate comments.
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