### About top quark mass again

In his latest blog posting of Tommaso Dorigo summarizes the latest measurement of top quark mass by CDF. Top quark is experimentally in a unique position since toponium does not exist and top quark mass is that of free top. Therefore top quark mass provides a stringent test for TGD based mass calculations based on p-adic thermodynamics.

- The prediction for top quark mass depends on second order contributions to electron mass and top mass parameterized by numbers Y
_{t}and Y_{t}varying in the interval [0,1). This contribution is of order one per cent. Once Y_{e}is fixed, the CP_{2}size (and mass scale) is fixed completely from electron mass. - The prediction for top quark mass is 167.8 GeV for Y
_{t}=Y_{e}=0 (vanishing second order corrections) and 169.1 GeV for Y_{t}=1 and Y_{e}=0 (maximal possible mass for top). The prediction is reduced for Y_{e}>0 since CP_{2}mass scale is reduced. - The experimental estimate for m
_{t}remained for a long time somewhat higher than the prediction of TGD. The previous experimental average value was m(t)=169.1 GeV with the allowed range being [164.7, 175.5] GeV (see the blog posting of Tommaso Dorigo). The fine tuning Y_{e}=0,Y_{t}=1 giving 169.1 GeV is somewhat un-natural. - The most recent value obtained by CDF reported in detail by Tommaso Dorigo is m
_{t}=165.1+/- 3.3+/- 3.1 GeV. This represents lower bound for the mass consistent for Y_{e}=Y_{t}=0. The prediction increases for Y_{t}>0. Clearly, TGD passes the stringent test posed by the top quark mass.

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