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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
; and
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
2022-01-31 19:55:36
@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}},
}