| DATE: |
2007-06-12 11:00 - 12:00 |
| PLACE: |
Kenkyu Honkan RM 220 |
| TITLE: |
Calculable One-Loop Contributions to S and T Parameters in the Gauge-Higgs Unification |
| CONTACT: |
tsuda |
| SPEAKER: |
Nobuhito Maru (Kobe Univ.) |
| LANGUAGE: |
English |
| ABSTRACT: |
We investigate the one-loop contributions to S and T oblique parameters in gauge-Higgs unification. We show that these parameters are finite in five dimensional space-time, but are divergent in more than five dimensions. Remarkably, however, we find that a particular linear combination of S and T parameters, S - 4 \cos \theta_{W} T, becomes finite for six dimensional space-time, though each of these parameters are divergent. This is because, in the Gauge-Higgs unification scenario, the operators relevant for S and T parameters are not independent, but are included in a unique higher dimensional gauge invariant operator. Thus the predictable linear combination is model independent, irrespectively of the detail of the matter content.
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