中国科学院理论物理研究所机构知识库
Advanced  
ITP OpenIR  > 理论物理所2016年知识产出  > 期刊论文
题名: Connecting the LHC diphoton excess to the Galatic Center gamma-ray excess
作者: Huang, XJ ;  Zhang, WH ;  Zhou, YF
刊名: PHYSICAL REVIEW D
出版日期: 2016
卷号: 94, 期号:3, 页码:35019
学科分类: Astronomy & Astrophysics; Physics
DOI: http://dx.doi.org/10.1103/PhysRevD.94.035019
通讯作者: Huang, XJ ;  Zhang, WH ;  Zhou, YF (reprint author), Chinese Acad Sci, Inst Theoret Phys, Key Lab Theoret Phys, ZhongGuanCun East Rd 55, Beijing 100190, Peoples R China.
文章类型: Article
英文摘要: The recent LHC Run-2 data have shown a possible excess in diphoton events, suggesting the existence of a new resonance phi with mass M similar to 750 GeV. If phi plays the role of a portal particle connecting the Standard Model and the invisible dark sector, the diphoton excess should be correlated with another photon excess, namely, the excess in the diffuse gamma rays towards the Galactic Center, which can be interpreted by the annihilation of dark matter (DM). We investigate the necessary conditions for a consistent explanation for the two photon excesses, especially the requirement on the width-to-mass ratio Gamma/M and phi decay channels, in a collection of DM models where the DM particle can be scalar, fermionic, and vector, and phi can be generated through s-channel gg fusion or qq annihilation. We show that the minimally required Gamma/M is determined by a single parameter proportional to (m(chi)/M)(n),where the integer n depends on the nature of the DM particle. We find that for the scalar DM model with phi generated from qq annihilation, the minimally required Gamma/M can be as low as Omicron(10(-3)). For the scalar DM model with phi generated from gg fusion and fermionic DM model with phi from qq annihilation, the required Gamma/M are typically of Omicron(10(-2)). The vector DM models, however, require very large Gamma/M of order one. For the DM models which can consistently explain both the excesses, the predicted cross sections for gamma-ray line are typically of Omicron(10(-31)-10(-29)) cm(3) s(-1), which are close to the current limits from the Fermi-LAT experiment.
类目[WOS]: Astronomy & Astrophysics ;  Physics, Particles & Fields
关键词[WOS]: ANNIHILATING DARK-MATTER ;  LEFT-RIGHT MODEL ;  2-HIGGS-DOUBLET MODEL ;  GALACTIC-CENTER ;  ATLAS DETECTOR ;  ROOT-S=8 TEV ;  MUON G-2 ;  HIGGS ;  RESONANCE ;  EMISSION
收录类别: SCI
项目资助者: NSFC [11335012, 11475237]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21557
Appears in Collections:理论物理所2016年知识产出_期刊论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
Connecting the LHC diphoton excess to the Galatic Center gamma-ray excess - Huang, Zhang, Zhou - 2016.pdf(648KB)----开放获取View Download

Recommended Citation:
Huang, XJ,Zhang, WH,Zhou, YF. Connecting the LHC diphoton excess to the Galatic Center gamma-ray excess[J]. PHYSICAL REVIEW D,2016,94(3):35019.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Huang, XJ]'s Articles
 [Zhang, WH]'s Articles
 [Zhou, YF]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Huang, XJ]‘s Articles
 [Zhang, WH]‘s Articles
 [Zhou, YF]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
文件名: Connecting the LHC diphoton excess to the Galatic Center gamma-ray excess - Huang, Zhang, Zhou - 2016.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2017  中国科学院理论物理研究所 - Feedback
Powered by CSpace