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Updated determination of chiral couplings and vacuum condensates from hadronic τ decay data

González-Alonso, Martín ; Pich, Antonio and Rodríguez-Sánchez, Antonio LU (2016) In Physical Review D 94(1).
Abstract

We analyze the lowest spectral moments of the left-right two-point correlation function, using all known short-distance constraints and the recently updated ALEPH V-A spectral function from τ decays. This information is used to determine the low-energy couplings L10 and C87 of chiral perturbation theory and the lowest-dimensional contributions to the operator product expansion of the left-right correlator. A detailed statistical analysis is implemented to assess the theoretical uncertainties, including violations of quark-hadron duality.

Please use this url to cite or link to this publication:
author
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review D
volume
94
issue
1
article number
014017
publisher
American Physical Society
external identifiers
  • scopus:84978381239
ISSN
2470-0010
DOI
10.1103/PhysRevD.94.014017
language
English
LU publication?
no
id
78c509e7-a0f1-4fd4-b8df-cc92d6a7e9fb
date added to LUP
2019-05-14 14:04:16
date last changed
2019-12-03 02:08:54
@article{78c509e7-a0f1-4fd4-b8df-cc92d6a7e9fb,
  abstract     = {<p>We analyze the lowest spectral moments of the left-right two-point correlation function, using all known short-distance constraints and the recently updated ALEPH V-A spectral function from τ decays. This information is used to determine the low-energy couplings L10 and C87 of chiral perturbation theory and the lowest-dimensional contributions to the operator product expansion of the left-right correlator. A detailed statistical analysis is implemented to assess the theoretical uncertainties, including violations of quark-hadron duality.</p>},
  author       = {González-Alonso, Martín and Pich, Antonio and Rodríguez-Sánchez, Antonio},
  issn         = {2470-0010},
  language     = {eng},
  month        = {07},
  number       = {1},
  publisher    = {American Physical Society},
  series       = {Physical Review D},
  title        = {Updated determination of chiral couplings and vacuum condensates from hadronic τ decay data},
  url          = {http://dx.doi.org/10.1103/PhysRevD.94.014017},
  doi          = {10.1103/PhysRevD.94.014017},
  volume       = {94},
  year         = {2016},
}