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	Fixed point and anomaly mediation in partial n=2 supersymmetric standard models
	Yin,Wen1,2
刊名	Chinese physics c
	2018
卷号	42期号:1
关键词	Extended supersymmetry Mssm Extra-dimension Muon g ? 2 Dark matter Gravitino problem Lhc 12.60.jv 98.80.-k 11.25.-w
ISSN号	1674-1137
DOI	10.1088/1674-1137/42/1/013104
英文摘要	Abstract motivated by the simple toroidal compactification of extra-dimensional susy theories, we investigate a partial n = 2 supersymmetric (susy) extension of the standard model which has an n = 2 susy sector and an n = 1 susy sector. we point out that below the scale of the partial breaking of n = 2 to n = 1, the ratio of yukawa to gauge couplings embedded in the original n = 2 gauge interaction in the n = 2 sector becomes greater due to a fixed point. since at the partial breaking scale the sfermion masses in the n = 2 sector are suppressed due to the n = 2 non-renormalization theorem, the anomaly mediation effect becomes important. if dominant, the anomaly-induced masses for the sfermions in the n = 2 sector are almost uv-insensitive due to the fixed point. interestingly, these masses are always positive, i.e. there is no tachyonic slepton problem. from an example model, we show interesting phenomena differing from ordinary mssm. in particular, the dark matter particle can be a sbino, i.e. the scalar component of the n = 2 vector multiplet of u ( 1 ) y . to obtain the correct dark matter abundance, the mass of the sbino, as well as the mssm sparticles in the n = 2 sector which have a typical mass pattern of anomaly mediation, is required to be small. therefore, this scenario can be tested and confirmed in the lhc and may be further confirmed by the measurement of the n = 2 yukawa couplings in future colliders. this model can explain dark matter, the muon g ? 2 anomaly, and gauge coupling unification, and relaxes some ordinary problems within the mssm. it is also compatible with thermal leptogenesis.
语种	英语
出版者	Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd
WOS记录号	IOP:1674-1137-42-1-013104
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2175762
专题	高能物理研究所
作者单位	1.Department of Physics, Tohoku University, Sendai 980-8578, Japan 2.Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
推荐引用方式 GB/T 7714	Yin,Wen. Fixed point and anomaly mediation in partial n=2 supersymmetric standard models[J]. Chinese physics c,2018,42(1).
APA	Yin,Wen.(2018).Fixed point and anomaly mediation in partial n=2 supersymmetric standard models.Chinese physics c,42(1).
MLA	Yin,Wen."Fixed point and anomaly mediation in partial n=2 supersymmetric standard models".Chinese physics c 42.1(2018).

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