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Technipion limits from LHC Higgs searches

文献类型:期刊论文

作者Chivukula, R. Sekhar1; Ittisamai, Pawin1; Simmons, Elizabeth H.1; Ren, Jing2,3
刊名PHYSICAL REVIEW D
出版日期2011-12-28
卷号84页码:13
ISSN号1550-7998
DOI10.1103/PhysRevD.84.115025
英文摘要LHC searches for the standard model Higgs Boson in gamma gamma or tau tau decay modes place strong constraints on the light technipion state predicted in technicolor models that include colored technifermions. Compared with the standard Higgs Boson, the technipions have an enhanced production rate (largely because the technipion decay constant is smaller than the weak scale) and also enhanced branching ratios into di-photon and di-au final states (largely due to the suppression of WW decays of the technipions). These factors combine to make the technipions more visible in both channels than a standard model Higgs would be. Hence, the recent ATLAS and CMS searches for Higgs bosons exclude the presence of technipions with masses from 110 GeV to nearly 2m(t) in technicolor models that (a) include colored technifermions (b) feature topcolor dynamics and (c) have technicolor groups with three or more technicolors (N-TC >= 3). For certain models, the limits also apply out to higher technipion masses or down to the minimum number of technicolors (N-TC = 2). The limits may be softened somewhat in models where extended technicolor plays a significant role in producing the top quark's mass. Additional LHC data on di- tau and di- photon final states will be extremely valuable in further exploring technicolor parameter space.
WOS关键词NEUTRAL PSEUDOGOLDSTONE BOSONS ; DYNAMICAL SYMMETRY-BREAKING ; TECHNICOLOR THEORIES ; WALKING TECHNICOLOR ; CHIRAL HIERARCHIES ; MASSLESS PARTICLES ; BROKEN SYMMETRIES ; WEAK INTERACTIONS ; STANDARD MODEL ; HYPERCOLOR
资助项目U.S. National Science Foundation[PHY-0854889] ; China Scholarship Council ; Thailand Development and Promotion of Science and Technology Talents Project (DPST)
WOS研究方向Astronomy & Astrophysics ; Physics
语种英语
WOS记录号WOS:000298643700004
出版者AMER PHYSICAL SOC
资助机构U.S. National Science Foundation ; China Scholarship Council ; Thailand Development and Promotion of Science and Technology Talents Project (DPST)
源URL[http://119.78.100.186/handle/113462/35092]  
专题中国科学院近代物理研究所
通讯作者Chivukula, R. Sekhar
作者单位1.Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA
2.Tsinghua Univ, Ctr High Energy Phys, Beijing 100084, Peoples R China
3.Tsinghua Univ, Inst Modern Phys, Beijing 100084, Peoples R China
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Chivukula, R. Sekhar,Ittisamai, Pawin,Simmons, Elizabeth H.,et al. Technipion limits from LHC Higgs searches[J]. PHYSICAL REVIEW D,2011,84:13.
APA Chivukula, R. Sekhar,Ittisamai, Pawin,Simmons, Elizabeth H.,&Ren, Jing.(2011).Technipion limits from LHC Higgs searches.PHYSICAL REVIEW D,84,13.
MLA Chivukula, R. Sekhar,et al."Technipion limits from LHC Higgs searches".PHYSICAL REVIEW D 84(2011):13.

入库方式: OAI收割

来源:近代物理研究所

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