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2014年知识产出  > 期刊论文
题名: A realistic intersecting D6-brane model after the first LHC run
作者: Li, TJ ;  Nanopoulos, DV ;  Raza, S ;  Wang, XC
刊名: JOURNAL OF HIGH ENERGY PHYSICS
出版日期: 2014
期号: 8, 页码:128
关键词: SUPERSYMMETRIC STANDARD MODEL ;  STRONG CP-PROBLEM ;  COLD DARK-MATTER ;  SU(5) GRAND UNIFICATION ;  FLIPPED SU(5) ;  F-THEORY ;  IIA ORIENTIFOLDS ;  INVISIBLE AXION ;  STRING MODEL ;  HARMLESS AXION
学科分类: Physics
DOI: 10.1007/JHEP08(2014)128
通讯作者: Li, TJ (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
部门归属: [Li, Tianjun ;  Raza, Shabbar ;  Wang, Xiao-Chuan] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China ;  [Li, Tianjun ;  Raza, Shabbar ;  Wang, Xiao-Chuan] Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China ;  [Li, Tianjun] Univ Elect Sci & Technol China, Sch Phys Elect, Chengdu 610054, Peoples R China ;  [Nanopoulos, D. V.] Texas A&M Univ, George P & Cynthia W Mitchell Inst Fundamental Ph, College Stn, TX 77843 USA ;  [Nanopoulos, D. V.] Houston Adv Res Ctr, Astroparticle Phys Grp, The Woodlands, TX 77381 USA ;  [Nanopoulos, D. V.] Acad Athens, Div Nat Sci, Athens 10679, Greece
英文摘要: With the Higgs boson mass around 125 GeV and the LHC supersymmetry search constraints, we revisit a three-family Pati-Salam model from intersecting D6-branes in Type IIA string theory on the T (6)/(a"currency sign(2) x a"currency sign(2)) orientifold which has a realistic phenomenology. We systematically scan the parameter space for mu < 0 and mu > 0, and find that the gravitino mass is generically heavier than about 2 TeV for both cases due to the Higgs mass low bound 123 GeV. In particular, we identify a region of parameter space with the electroweak fine-tuning as small as Delta (EW) similar to 24-32 (3-4%). In the viable parameter space which is consistent with all the current constraints, the mass ranges for gluino, the first two-generation squarks and sleptons are respectively [3, 18] TeV, [3, 16] TeV, and [2, 7] TeV. For the third-generation sfermions, the light stop satisfying 5 sigma WMAP bounds via neutralino-stop coannihilation has mass from 0.5 to 1.2 TeV, and the light stau can be as light as 800 GeV. We also show various coannihilation and resonance scenarios through which the observed dark matter relic density is achieved. Interestingly, the certain portions of parameter space has excellent t-b-tau and b-tau Yukawa coupling unification. Three regions of parameter space are highlighted as well where the dominant component of the lightest neutralino is a bino, wino or higgsino. We discuss various scenarios in which such solutions may avoid recent astrophysical bounds in case if they satisfy or above observed relic density bounds. Prospects of finding higgsino-like neutralino in direct and indirect searches are also studied. And we display six tables of benchmark points depicting various interesting features of our model. Note that the lightest neutralino can be heavy up to 2.8 TeV, and there exists a natural region of parameter space from low-energy fine-tuning definition with heavy gluino and first two-generation squarks/sleptons, we point out that the 33 TeV and 100 TeV proton-proton colliders are indeed needed to probe our D-brane model.
资助者: Natural Science Foundation of China [10821504, 11075194, 11135003, 11275246]; National Basic Research Program of China (973 Program) [2010CB833000]; DOE grant [DE-FG03-95-ER-40917]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000342122800001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15674
Appears in Collections:理论物理所2014年知识产出 _期刊论文

Files in This Item:

There are no files associated with this item.


Recommended Citation:
Li, TJ,Nanopoulos, DV,Raza, S,et al. A realistic intersecting D6-brane model after the first LHC run[J]. JOURNAL OF HIGH ENERGY PHYSICS,2014(8):128.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Li, TJ]'s Articles
 [Nanopoulos, DV]'s Articles
 [Raza, S]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Li, TJ]‘s Articles
 [Nanopoulos, DV]‘s Articles
 [Raza, S]‘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 
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