On the Numerical Closeness of the Effective Phenomenological Electroweak Mixing Angle Θ and the Ms Parameter Θ̂
نویسنده
چکیده
It happens that s and ŝ are equal with 0.1% accuracy, though they are split by radiative corrections and a natural estimate for their difference is 1%. This degeneracy occurs only for mt value close to 170 GeV, so no deep physical reason can be attributed to it. However, another puzzle of the Standard Model, the degeneracy of s eff and s, is not independent of the previous one since a good physical reason exists for s eff and ŝ degeneracy. We present explicit formulas which relate these three angles.
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