Chiral effective theory with a light scalar and lattice QCD

被引：17
|
作者：
Soto, J. [1 ,2 ]
Talavera, P. [2 ,3 ]
Tarrus, J. [1 ,2 ]
机构：
[1] Univ Barcelona, Dept Estruct & Constituents Mat, E-08028 Barcelona, Catalonia, Spain
[2] Univ Barcelona, Inst Ciencies Cosmos, E-08028 Barcelona, Catalonia, Spain
[3] Univ Politecn Cataluna, Dept Fis & Engn Nucl, E-08036 Barcelona, Spain
来源：
NUCLEAR PHYSICS B | 2013年 / 866卷 / 03期
关键词：
PERTURBATION-THEORY; LAGRANGIANS; TRIVIALITY; POINT; SIGMA; MODEL;
D O I：
10.1016/j.nuclphysb.2012.09.005
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：
We extend the usual chiral perturbation theory framework (chi PT) to allow the inclusion of a light dynamical isosinglet scalar. Using lattice QCD results, and a few phenomenological inputs, we explore the parameter space of the effective theory. We discuss the S-wave pion pion scattering lengths, extract the average value of the two light quark masses and evaluate the impact of the dynamical singlet field in the low-energy constants (I) over bar (1), (I) over bar (3) and (I) over bar (4) of chi PT. We also show how to extract the mass and width of the sigma resonance from chiral extrapolations of lattice QCD data. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：270 / 292
页数：23
相关论文
共 50 条
  • [41] Nuclear lattice simulations with chiral effective field theory
    Lee, D
    Borasoy, B
    Schaefer, T
    PHYSICAL REVIEW C, 2004, 70 (01): : 014007 - 1
  • [42] Masses and Widths of Light Scalar Mesons in Chiral Perturbation Theory
    CHEN Xiao-Zhao~1 LI Xiao-Ya~1 LU Xiao-Fu~(1
    Communications in Theoretical Physics, 2008, 49 (02) : 451 - 455
  • [43] Masses and widths of light scalar mesons in chiral perturbation theory
    Chen Xiao-Zhao
    Li Xiao-Ya
    Lue Xiao-Fu
    COMMUNICATIONS IN THEORETICAL PHYSICS, 2008, 49 (02) : 451 - 455
  • [44] Chiral effective Lagrangian for heavy-light mesons from QCD
    Chen, Qing-Sen
    Fu, Hui-Feng
    Ma, Yong-Liang
    Wang, Qing
    PHYSICAL REVIEW D, 2020, 102 (03)
  • [45] CHIRAL-SYMMETRY BREAKING AND LIGHT-QUARK MASSES IN LATTICE QCD
    HAMBER, HW
    PHYSICAL REVIEW D, 1985, 31 (03): : 586 - 597
  • [46] DECONFINING CHIRAL TRANSITION IN QCD ON THE LATTICE
    KANAYA, K
    PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT, 1995, (120): : 25 - 36
  • [47] Full lattice QCD study of the κ scalar meson
    Fu Zi-Wen
    DeTar, Carleton
    CHINESE PHYSICS C, 2011, 35 (12) : 1079 - 1083
  • [48] THE CHIRAL LIMIT OF QUENCHED LATTICE QCD
    BOWLER, KC
    KENWAY, RD
    ROWETH, D
    STEPHENSON, DB
    NUCLEAR PHYSICS B, 1988, 301 (02) : 304 - 326
  • [49] Vector and scalar charmonium resonances with lattice QCD
    C. B. Lang
    Luka Leskovec
    Daniel Mohler
    Sasa Prelovsek
    Journal of High Energy Physics, 2015
  • [50] Full lattice QCD study of the κ scalar meson
    傅子文
    Carleton DeTar
    Chinese Physics C, 2011, 35 (12) : 1079 - 1083
12345