# Plot of gauge coupling unification [closed]

(Zoom in here to see the scales.)
About the result of plotting running of 3 coupling constant, we think that we should get the correct one(MSSM).

But we get discontinuity at $M_{susy}$.

If there something wrong in our formulae? If you have the correct formulae of $1/\alpha$, please provide them for me.

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## closed as too localized by Brandon Enright, akhmeteli, Waffle's Crazy Peanut, Qmechanic♦Jun 10 '13 at 12:05

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Hi, you can find the full 2-loop beta functions in Martin and Vaughn here: arxiv.org/abs/hep-ph/9311340 –  sujeet Jun 10 '13 at 5:41
I can't read the scales on your plot well enough to see whether they are different. –  Michael Brown Jun 10 '13 at 6:40

No. "Consistent" here means that if you take into account corrections of order $\hbar^2$, you should take into account all corrections to $\hbar^2$, which includes the threshold corrections. –  Neuneck May 17 '14 at 16:02