Double type-II seesaw scenario, baryon asymmetry, and dark matter for cosmic e(+/-) excesses
Gu, PH; He, HJ; Sarkar, U; Zhang XM(张新民); Zhang, XM
刊名PHYSICAL REVIEW D
2009
卷号80期号:5页码:53004
学科分类Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.80.053004
通讯作者[Gu, Pei-Hong] Abdus Salam Int Ctr Theoret Phys, I-34014 Trieste, Italy ; [He, Hong-Jian] Tsinghua Univ, Ctr High Energy Phys, Beijing 100084, Peoples R China ; [Sarkar, Utpal] Phys Res Lab, Ahmadabad 380009, Gujarat, India ; [Sarkar, Utpal] Washington Univ, Dept Phys, St Louis, MO 63130 USA ; [Sarkar, Utpal] Washington Univ, McDonnell Ctr Space Sci, St Louis, MO 63130 USA ; [Zhang, Xinmin] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
文章类型Article
英文摘要We construct a new realization of type-II seesaw for neutrino masses and baryon asymmetry by extending the standard model with one light and two heavy singlet scalars besides one Higgs triplet. The heavy singlets pick up small vacuum expectation values to give a suppressed trilinear coupling between the triplet and doublet Higgs bosons after the light singlet drives the spontaneous breaking of lepton number. The Higgs triplet can thus remain light and be accessible at the LHC. The lepton-number conserving decays of the heavy singlets can generate a lepton asymmetry stored in the Higgs triplet to account for the matter-antimatter asymmetry in the Universe. We further introduce stable gauge bosons from a hidden sector, which obtain masses and annihilate into the Higgs triplet after spontaneous breaking of the associated non-Abelian gauge symmetry. With Breit-Wigner enhancement, the stable gauge bosons can simultaneously explain the relic density of dark matter and the cosmic positron/electron excesses.
类目[WOS]Astronomy & Astrophysics ; Physics, Particles & Fields
研究领域[WOS]Astronomy & Astrophysics ; Physics
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语种英语
WOS记录号WOS:000270384900027
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240651
专题中国科学院高能物理研究所_理论物理室_期刊论文
作者单位中国科学院高能物理研究所
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Gu, PH,He, HJ,Sarkar, U,et al. Double type-II seesaw scenario, baryon asymmetry, and dark matter for cosmic e(+/-) excesses[J]. PHYSICAL REVIEW D,2009,80(5):53004.
APA Gu, PH,He, HJ,Sarkar, U,张新民,&Zhang, XM.(2009).Double type-II seesaw scenario, baryon asymmetry, and dark matter for cosmic e(+/-) excesses.PHYSICAL REVIEW D,80(5),53004.
MLA Gu, PH,et al."Double type-II seesaw scenario, baryon asymmetry, and dark matter for cosmic e(+/-) excesses".PHYSICAL REVIEW D 80.5(2009):53004.
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