Summary
Predictions of aSU 2,L×U 1×Ũ 1 andSU 2,L×SU 2,R×U 1 type electroweak gauge model for e+e−→γ, Z 01 , Z 02 , ... → μ+μ−, 3 jets with longitudinally polarized beams are compared with the standardmodel predictions. Unpolarized beams cannot single out the standard model up to ∼ 120 GeV. Polarization asymmetry is sensitive to different models; in the 2-jet production sizable effects are expected already above 60 GeV.
Riassunto
Si confrontano le previsioni di un modello di gauge elettrodebole di tipoSU 2,L×U 1×Ũ 1 eSU 2,L×SU 2,R×U 1 per e+e−→γ, Z 01 , Z 02 , ... → μ+μ− a due getti con fasci polarizzati longitudinalmente con le previsioni del modello standard. I fasci non polarizzati non possono «scegliere» il modello standard fino a ∼ 120 GeV. L'asimmetria di polarizazione è sensibile a modelli diversi; nella produzione a due getti ci si aspetta di avere effetti abbastanza grandi già oltre 60 GeV.
Резюме
ПредсказанияSU 2,L×U 1×Ũ 1 иSU 2,L×SU 2,R×U 1 типа электрослабой калибровочной модели, для e+e−→γ, Z 01 , Z 02 , ... → μ+μ−, 2 σтруи с продольно поляризованными пучками сравниваются с предсказаниями стандартной модели. Неполяризованные пучки не могут быть выделены в стандартной модели вплоть до ∼ 120 ГэВ. Асимметрия поляризации является очень чувствительной к различным моделям. При образовании 2 струй заметные эффекты ожидаются ожидаются уже выппе 60 ГэВ.
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Hollik, W. Probing the electroweak gauge group with longitudinal polarization. Nuov Cim A 64, 114–122 (1981). https://doi.org/10.1007/BF02773370
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DOI: https://doi.org/10.1007/BF02773370