Constraining new physics in the Tev range by the recent BNL measurement of (g − 2)µ
نویسنده
چکیده
In this paper we study the implications of the recent high precision measurement of (g−2)μ by BNL [1] on new heavy physics beyond the SM. The effect of two d=6 operators on the anomalous magnetic momment of the muon is considered and the new physics contribution to aμ reported by BNL has been used to put bounds on the scale associated with these operators.
منابع مشابه
ar X iv : h ep - p h / 01 02 21 1 v 4 1 9 Ju n 20 01 Constraining new physics in the Tev range by the recent BNL measurement of ( g −
In this paper we study the implications of the recent high precision measurement of (g−2)μ by BNL [1] on new heavy physics beyond the SM in a model independent way. We find that if the new physics responsible for the muon anomaly is due to d=6 direct operators then they could arise from the following follwing three broad classes of new physics a) new particles in the few hundred Gev range with ...
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The two-loop electroweak radiative corrections to the muon's anomalous magnetic moment, aµ ≡ (gµ − 2)/2, are presented. We obtain an overall 22.6% reduction in the electroweak contribution a EW µ from 195 × 10 −11 to 151(4) × 10 −11. Implications for the full standard model prediction and an upcoming high precision measurement of aµ are briefly discussed. Some aspects of the calculations are di...
متن کاملThe low energy effective Lagrangian relevant for us is therefore
In this paper we study the implications of the recent high precision measurement of (g−2)μ by BNL [1] on new heavy physics beyond the SM. The effect of two d=6 operators on the anomalous magnetic momment of the muon is considered and the new physics contribution to aμ reported by BNL has been used to put bounds on the scale associated with these operators.
متن کامل/ 02 05 14 0 v 2 1 5 M ay 2 00 2 MUON g − 2 IN A MODEL WITH ONE EXTRA DIMENSION
The computation of the muon anomalous magnetic moment in the framework of a proposed extension of the Standard Model to 5 dimensions is presented. The result (a small correction with respect to the SM prediction) is briefly discussed. The measurement of the muon anomalous magnetic moment a µ is currently one of the most stringent tests for " new physics " scenarios, particularly in the light of...
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