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Mesonic Low-Energy Constants

Bijnens, Johan LU and Ecker, Gerhard (2014) In Annual Review of Nuclear and Particle Science 64. p.149-174
Abstract
We review the status of the coupling constants of chiral Lagrangians in the meson sector, the so-called low-energy constants (LECs). We emphasize the chiral SU(2) and SU(3) Lagrangians for the strong interactions of light mesons and discuss the theoretical and experimental input for determining the corresponding LECs. In the two-flavor sector, we review the knowledge of the O(p(4)) LECs from both continuum fits and lattice QCD analyses. For chiral SU(3), next-to-next-to-leading-order (NNLO) effects play a much greater role. Our main new results are fits of the LECs L-i at both next-to-leading order (NLO) and NNLO, making extensive use of the available knowledge of NNLO LECs. We compare our results with available lattice determinations. We... (More)
We review the status of the coupling constants of chiral Lagrangians in the meson sector, the so-called low-energy constants (LECs). We emphasize the chiral SU(2) and SU(3) Lagrangians for the strong interactions of light mesons and discuss the theoretical and experimental input for determining the corresponding LECs. In the two-flavor sector, we review the knowledge of the O(p(4)) LECs from both continuum fits and lattice QCD analyses. For chiral SU(3), next-to-next-to-leading-order (NNLO) effects play a much greater role. Our main new results are fits of the LECs L-i at both next-to-leading order (NLO) and NNLO, making extensive use of the available knowledge of NNLO LECs. We compare our results with available lattice determinations. We then discuss resonance saturation of LECs and the convergence of chiral SU(3) to NNLO. Finally, we review the status of predictions for the LECs of chiral Lagrangians with dynamical photons and leptons. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
chiral perturbation theory, low-energy constants, lattice QCD, resonance, saturation, dynamical photons and leptons
in
Annual Review of Nuclear and Particle Science
volume
64
pages
149 - 174
publisher
Annual Reviews
external identifiers
  • wos:000348455000006
  • scopus:84908472397
ISSN
1545-4134
DOI
10.1146/annurev-nucl-102313-025528
language
English
LU publication?
yes
id
afbb3c8b-343c-4757-9bd2-f34910c36efd (old id 5185958)
date added to LUP
2015-03-30 14:21:01
date last changed
2017-10-22 03:30:02
@article{afbb3c8b-343c-4757-9bd2-f34910c36efd,
  abstract     = {We review the status of the coupling constants of chiral Lagrangians in the meson sector, the so-called low-energy constants (LECs). We emphasize the chiral SU(2) and SU(3) Lagrangians for the strong interactions of light mesons and discuss the theoretical and experimental input for determining the corresponding LECs. In the two-flavor sector, we review the knowledge of the O(p(4)) LECs from both continuum fits and lattice QCD analyses. For chiral SU(3), next-to-next-to-leading-order (NNLO) effects play a much greater role. Our main new results are fits of the LECs L-i at both next-to-leading order (NLO) and NNLO, making extensive use of the available knowledge of NNLO LECs. We compare our results with available lattice determinations. We then discuss resonance saturation of LECs and the convergence of chiral SU(3) to NNLO. Finally, we review the status of predictions for the LECs of chiral Lagrangians with dynamical photons and leptons.},
  author       = {Bijnens, Johan and Ecker, Gerhard},
  issn         = {1545-4134},
  keyword      = {chiral perturbation theory,low-energy constants,lattice QCD,resonance,saturation,dynamical photons and leptons},
  language     = {eng},
  pages        = {149--174},
  publisher    = {Annual Reviews},
  series       = {Annual Review of Nuclear and Particle Science},
  title        = {Mesonic Low-Energy Constants},
  url          = {http://dx.doi.org/10.1146/annurev-nucl-102313-025528},
  volume       = {64},
  year         = {2014},
}