Abstract
The prediction of strong coupling assuming (supersymmetric) coupling constant unification is reexamined. We find, using the new electroweak data, s(MZ)0.1290.010. The implications of the large s value are discussed. The role played by the Z quark width is stressed. It is also emphasized that high-energy (but not low-energy) corrections could significantly diminish the prediction. However, unless higher-dimension operators are assumed to be suppressed, at present one cannot place strong constraints on the superheavy spectrum. Nonleading electroweak threshold corrections are also discussed.
Original language | English (US) |
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Pages (from-to) | 3081-3086 |
Number of pages | 6 |
Journal | Physical Review D |
Volume | 52 |
Issue number | 5 |
DOIs | |
State | Published - 1995 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)