arXiv subjects
Publications and source records attributed to Zenrō Hioki.
Looking into the inside of radiative corrections is an interesting subject as a deeper study of the standard electroweak theory after its remarkable success in the precision analyses. I will discuss here a test of ``structure" of the EW radiative corrections to the weak-boson masses, and show that we can now analyze several different parts separately.
Two topics on the standard electroweak theory are discussed based on its remarkable success in precision analyses. One is a test of structure of the radiative corrections to the weak-boson masses as a further precision analysis. The other is an indirect Higgs-boson search through the radiative corrections to the various quantities measured at LEP.
Several different effects in electroweak quantum corrections are explored separately through the latest data on the weak-boson masses. The leading-log approximation, the improved-Born approximation and the non-decoupling top-quark effects are studied without depending on the recent CDF data of $m_t$, and the results are given in a form independent of the Higgs mass. On the other hand, the bosonic- and the non-decoupling Higgs effects are examined by fully taking account of those CDF data. It is emphasized that future precision measurements of $M_W$ and $m_t$ are considerably significant not only for further studies of the electroweak theory at higher confidence level but also for new physics searches beyond it.
Based on the recent CDF report on the top-quark, we have carried out an analysis on the Higgs mass within the minimal standard electroweak theory using the latest data on the $W$-mass. Although this theory is in quite a happy situation now, we wish to point out that more precise measurements of $M_W$ and $m_t$ in the future are crucial and they could come to require some new physics beyond it.
Based on recent $W$-mass measurements, the electroweak theory is tested at non-trivial quantum correction level, i.e., beyond the Born approximation with $α(M_Z)$ instead of $α$. We can conclude that some non-Born type corrections must exist at more than 92 % confidence level, and the non-decoupling top-quark corrections are required at 97 % confidence level.