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题名: Light dark matter from the U(1)(X) sector in the NMSSM with gauge mediation
作者: Kang, ZF ;  Li, TJ ;  Liu, T ;  Tong, CL ;  Yang, JM
刊名: JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
出版日期: 2011
期号: 1, 页码:28
关键词: SUPERSYMMETRIC STANDARD MODEL ;  BREAKING
学科分类: Physics
通讯作者: Kang, ZF (reprint author), Acad Sinica, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Zhongguancun E Rd, Beijing 100190, Peoples R China.
部门归属: [Kang, Zhaofeng; Li, Tianjun; Liu, Tao; Tong, Chunli; Yang, Jin Min] Acad Sinica, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China; [Li, Tianjun] Texas A&M Univ, George P & Cynthia W Mitchell Inst Fundamental Ph, College Stn, TX 77843 USA
英文摘要: Cosmic ray anomalies observed by PAMELA and Fermi-LAT experiments may be interpreted by heavy (TeV-scale) dark matter annihilation enhanced by Sommerfeld effects mediated by a very light (sub-GeV) U(1)(X) gauge boson, while the recent direct searches from CoGeNT and DAMA/LIBRA experiments may indicate a rather light (similar to 7GeV) dark matter with weak interaction. Motivated by these apparently different scales, we consider a gauge mediated next-to-the minimal supersymmetric standard model (NMSSM) entended with a light U(1)(X) sector plus a heavy sector ((H) over barh, Hh), which can provide both a light (similar to 7GeV) and a heavy (TeV-scale) dark matter without introducing any ad hoc new scale. Through the Yukawa coupling between Hh and the messager fields, the U(1)(X) gauge symmetry is broken around the GeV scale radiatively and a large negative m(S)(2) is generated for the NMSSM singlet S. Furthermore, the small kinetic mixing parameter between U(1)(X) and U(1)(Y) is predicted to be theta similar to 10(-5) - 10(-6) after integrating out the messengers. Such a light dark matter, which can have a normal relic density from the late decay of the right-handed sneutrino (assumed to be the ordinary next-to-the lightest supersymmetric particle and thermally produced in the early Universe), can serve a good candidate to explain the recent CoGeNT and DAMA/LIBRA results.
资助者: National Natural Science Foundation of China [10821504, 10725526, 10635030]; DOE [DE-FG03-95-Er-40917]; Mitchell-Heep Chair in High Energy Physics
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000286802900028
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/14449
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Recommended Citation:
Kang, ZF,Li, TJ,Liu, T,et al. Light dark matter from the U(1)(X) sector in the NMSSM with gauge mediation[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2011(1):28.
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