Updated determination of chiral couplings and vacuum condensates from hadronic τ decay data
(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:
https://lup.lub.lu.se/record/78c509e7-a0f1-4fd4-b8df-cc92d6a7e9fb
- author
- González-Alonso, Martín ; Pich, Antonio and Rodríguez-Sánchez, Antonio LU
- publishing date
- 2016-07-15
- 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}}, }