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题名: Patterns of strong coupling for LHC searches
作者: Liu, D ;  Pomarol, A ;  Rattazzi, R ;  Riva, F
刊名: JOURNAL OF HIGH ENERGY PHYSICS
出版日期: 2016
期号: 11, 页码:141
关键词: Beyond Standard Model ;  Effective field theories ;  Global Symmetries ;  Technicolor and Composite Models
学科分类: Physics
DOI: http://dx.doi.org/10.1007/JHEP11(2016)141
通讯作者: Liu, D (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing, Peoples R China. ;  Liu, D (reprint author), Ecole Polytech Fed Lausanne, Inst Phys, Theoret Particle Phys Lab, CH-1015 Lausanne, Switzerland.
文章类型: Article
英文摘要: Even though the Standard Model (SM) is weakly coupled at the Fermi scale, a new strong dynamics involving its degrees of freedom may conceivably lurk at slightly higher energies, in the multi TeV range. Approximate symmetries provide a structurally robust context where, within the low energy description, the dimensionless SM couplings are weak, while the new strong dynamics manifests itself exclusively through higher- derivative interactions. We present an exhaustive classification of such scenarios in the form of effective field theories, paying special attention to new classes of models where the strong dynamics involves, along with the Higgs boson, the SM gauge bosons and/or the fermions. The IR softness of the new dynamics suppresses its effects at LEP energies, but deviations are in principle detectable at the LHC, even at energies below the threshold for production of new states. We believe our construction provides the so far unique structurally robust context where to motivate several LHC searches in Higgs physics, diboson production, or W W scattering. Perhaps surprisingly, the interplay between weak coupling, strong coupling and derivatives, which is controlled by symmetries, can override the naive expansion in operator dimension, providing instances where dimension-8 dominates dimension-6, well within the domain of validity of the low energy effective theory. This result reveals the limitations of an analysis that is both ambitiously general and restricted to dimension-6 operators.
类目[WOS]: Physics, Particles & Fields
关键词[WOS]: ELECTROWEAK SYMMETRY-BREAKING ;  COMPOSITE HIGGS-MODEL ;  PHENOMENOLOGICAL LAGRANGIANS ;  VACUUM MISALIGNMENT ;  FIELD-THEORIES ;  SUPERSYMMETRY ;  CONSTRAINT ;  SECTOR ;  FLAVOR ;  QUARKS
收录类别: SCI
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21478
Appears in Collections:理论物理所2016年知识产出_期刊论文

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Recommended Citation:
Liu, D,Pomarol, A,Rattazzi, R,et al. Patterns of strong coupling for LHC searches[J]. JOURNAL OF HIGH ENERGY PHYSICS,2016(11):141.
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