# What are the six quark mass values when extrapolated to Planck energy?

Let us assume that the standard model is correct up to Planck mass. (Yes, I know, this is a big assumption.)

If we continue the running of quark masses with energy (due to renormalization), what are the mass values we get for the six quarks at Planck energy? Is the sequence of mass values the same at Planck energy or do some quarks "catch" up with others?

Is there some literature on this issue?

Have a look at Updated Values of Running Quark and Lepton Masses by Zhi-zhong Xing, He Zhang and Shun Zhou. In TABLE IV the authors list the various fermion masses, for example, at the GUT scale $\approx 10^{16}$ GeV, which is quite close to the Planck scale.