The gauge extension of the standard model with the U（1）B-L＋xy symmetry predicts the existence of a lightgauge boson Z′ with small couplings to ordinary fermions. We discuss its contributions to the muon anomalous ...The gauge extension of the standard model with the U（1）B-L＋xy symmetry predicts the existence of a lightgauge boson Z′ with small couplings to ordinary fermions. We discuss its contributions to the muon anomalous magnetic moment αμ. Taking account of the constraints on the relevant free parameters, we further calculate the contributions of the light gauge boson Z′ to the Higgs-strahlung processes e＋ e-→ZH and e＋ e- →Z′H.展开更多
基金Supported by the National Natural Science Foundation of China under Grant Nos 11275088 and 11545012the Natural Science Foundation of Liaoning Scientific Committee under Grant No 2014020151
文摘The gauge extension of the standard model with the U（1）B-L＋xy symmetry predicts the existence of a lightgauge boson Z′ with small couplings to ordinary fermions. We discuss its contributions to the muon anomalous magnetic moment αμ. Taking account of the constraints on the relevant free parameters, we further calculate the contributions of the light gauge boson Z′ to the Higgs-strahlung processes e＋ e-→ZH and e＋ e- →Z′H.
