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题名: Dynamically spontaneous symmetry breaking and masses of lightest nonet scalar mesons as composite Higgs bosons
作者: Dai, Yuan-Ben ;  Wu, Yue-Liang
刊名: EUROPEAN PHYSICAL JOURNAL C
出版日期: 2005
卷号: 39, 期号:1, 页码:1-8
学科分类: Physics
通讯作者: Dai, YB , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
部门归属: [Dai, Yuan-Ben; Wu, Yue-Liang] Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: Based on the (approximate) chiral symmetry of QCD Lagrangian and the bound state assumption of effective meson fields, a nonlinearly realized effective chiral Lagrangian for meson fields is obtained from integrating out the quark fields by using the new finite regularization method. As the new method preserves the symmetry principles of the original theory and meanwhile keeps the finite quadratic term given by a physically meaningful characteristic energy scale M(c), it then leads to a dynamically spontaneous symmetry breaking in the effective chiral field theory. The gap equations are obtained as the conditions of minimal effective potential in the effective theory. The instanton effects are included via the induced interactions discovered by 't Hooft and found to play an important role in obtaining the physical solutions for the gap equations. The lightest nonet scalar mesons (sigma, f(0), a(0) and kappa) appearing as the chiral partners of the nonet pseudoscalar mesons are found to be composite Higgs bosons with masses below the chiral symmetry breaking scale Lambda(chi) similar to 1.2 GeV. In particular, the mass of the singlet scalar (or the sigma) is found to be m(sigma) similar or equal to 677 MeV.
资助者: Chinese Academy of Sciences; National Science Foundation of China
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000207563200001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13884
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Dai, Yuan-Ben,Wu, Yue-Liang. Dynamically spontaneous symmetry breaking and masses of lightest nonet scalar mesons as composite Higgs bosons[J]. EUROPEAN PHYSICAL JOURNAL C,2005,39(1):1-8.
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