Muon anomalous magnetic moment, two-Higgs-doublet model, and supersymmetry

被引：92

作者：

Cheung, KM ^{[1
]}

Chou, CH

Kong, OCW

机构：

[1] Natl Tsing Hua Univ, Natl Ctr Theoret Sci, Hsinchu, Taiwan

[2] Acad Sinica, Inst Phys, Taipei 11529, Taiwan

[3] Natl Cent Univ, Dept Phys, Chungli 32054, Taiwan

来源：

PHYSICAL REVIEW D | 2001年 / 64卷 / 11期

关键词：

D O I：

10.1103/PhysRevD.64.111301

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The recent measurement of the muon anomalous magnetic moment a(mu) shows a 2.6 sigma deviation from the standard model value. We show that it puts strong constraints on the parameter space of the two-Higgs-doublet model (2HDM) II. The dominant contribution of the Higgs bosons comes at the mo-loop level. and in order to explain the data it favors a pseudoscalar A with a light mass range and a large tan beta. At 95% C.L., the upper limit for m(A) is 29 (55) (85) GeV for tan beta = 30 (45) (60), and tan beta is bounded below at 17. This is in sharp contrast to the conclusion one draws from considering one-loop Higgs contributions alone. Finally, we also discuss the role of the Higgs contributions in the minimal supersymmetric standard model.

引用

页数：5

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