Dynamically spontaneous symmetry breaking and masses of lightest nonet scalar mesons as composite Higgs bosons

被引:35
作者
Dai, Yuan-Ben [1 ]
Wu, Yue-Liang [1 ]
机构
[1] Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
来源
EUROPEAN PHYSICAL JOURNAL C | 2005年 / 39卷 / Suppl 1期
基金
美国国家科学基金会;
关键词
D O I
10.1140/epjcd/s2004-01-001-3
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
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.
引用
收藏
页码:1 / 8
页数:8
相关论文
共 21 条
[1]   Dalitz plot analysis of the decay D+ → K- π+ π+ and indication of a low-mass scalar Kπ resonance -: art. no. 121801 [J].
Aitala, EM ;
Amato, S ;
Anjos, JC ;
Appel, JA ;
Ashery, D ;
Banerjee, S ;
Bediaga, I ;
Blaylock, G ;
Bracker, SB ;
Burchat, PR ;
Burnstein, RA ;
Carter, T ;
Carvalho, HS ;
Copty, NK ;
Cremaldi, LM ;
Darling, C ;
Denisenko, K ;
Devmal, S ;
Fernandez, A ;
Fox, GF ;
Gagnon, P ;
Göbel, C ;
Gounder, K ;
Halling, AM ;
Herrera, G ;
Hurvits, G ;
James, C ;
Kasper, PA ;
Kwan, S ;
Langs, DC ;
Leslie, J ;
Lundberg, B ;
Magnin, J ;
Massafferri, A ;
MayTal-Beck, S ;
Meadows, B ;
Neto, JRTD ;
Mihalcea, D ;
Milburn, RH ;
de Miranda, JM ;
Napier, A ;
Nguyen, A ;
d'Oliveira, AB ;
O'Shaughnessy, K ;
Peng, KC ;
Perera, LP ;
Purohit, MV ;
Quinn, B ;
Radeztsky, S ;
Rafatian, A .
PHYSICAL REVIEW LETTERS, 2002, 89 (12) :121801-121801
[2]   Study of the Ds+ → π-π+π+ decay and measurement of f0 masses and widths [J].
Aitala, EM ;
Amato, S ;
Anjos, JC ;
Appel, JA ;
Ashery, D ;
Banerjee, S ;
Bediaga, I ;
Blaylock, G ;
Bracker, SB ;
Burchat, PR ;
Burnstein, RA ;
Carter, T ;
Carvalho, HS ;
Copty, NK ;
Cremaldi, LM ;
Darling, C ;
Denisenko, K ;
Devmal, S ;
Fernandez, A ;
Fox, GF ;
Gagnon, P ;
Gobel, C ;
Gounder, K ;
Halling, AM ;
Herrera, G ;
Hurvits, G ;
James, C ;
Kasper, PA ;
Kwan, S ;
Langs, DC ;
Leslie, J ;
Lundberg, B ;
Magnin, J ;
Massafferri, A ;
MayTal-Beck, S ;
Meadows, B ;
Neto, JRT ;
Mihalcea, D ;
Milburn, RH ;
de Miranda, JM ;
Napier, A ;
Nguyen, A ;
d'Oliveira, AB ;
O'Shaughnessy, K ;
Peng, KC ;
Perera, LP ;
Purohit, MV ;
Quinn, B ;
Radeztsky, S ;
Rafatian, A .
PHYSICAL REVIEW LETTERS, 2001, 86 (05) :765-769
[3]  
Black D, 1998, PHYS REV D, V58, DOI 10.1103/PhysRevD.58.054012
[4]   THE AXIAL VECTOR CURRENT IN BETA-DECAY [J].
GELLMANN, M ;
LEVY, M .
NUOVO CIMENTO, 1960, 16 (04) :705-726
[5]  
Groom DE, 2000, EUR PHYS J C, V15, P1
[6]   Analysis of a K pi-scattering phase shift and evidence for the kappa(900) meson [J].
Ishida, S ;
Ishida, M ;
Ishida, T ;
Takamatsu, K ;
Tsuru, T .
PROGRESS OF THEORETICAL PHYSICS, 1997, 98 (03) :621-629
[7]   MULTI-QUARK HADRONS .1. PHENOMENOLOGY OF Q2QBAR2 MESONS [J].
JAFFE, RJ .
PHYSICAL REVIEW D, 1977, 15 (01) :267-280
[8]  
*KEK, 2000, C POSS EX LIGHT SIGM
[9]   DYNAMICAL MODEL OF ELEMENTARY PARTICLES BASED ON AN ANALOGY WITH SUPERCONDUCTIVITY .1. [J].
NAMBU, Y ;
JONALASINIO, G .
PHYSICAL REVIEW, 1961, 122 (01) :345-358
[10]  
NAPSUCIALE M, 2002, HEPPH0204170