Chiral LECs from flavor-breaking inverse moment finite energy sum analyses of hadronic τ decay data

Maarten Golterman, Kim Maltman, Santiago Peris

Research output: Contribution to journalArticleResearchpeer-review

Abstract

© 2015 Elsevier B.V. Using flavor-breaking chiral sum rules for the difference of flavor ud and us current-current two-point functions, with non-strange and strange hadronic τ decay data as input, we obtain accurate determinations of a number of SU(3) chiral NNLO low-energy constants. These results allow a significant improvement in the combined NNLO continuum-lattice determination of the NLO low-energy constant L10r, producing a current world best determination of L10r, and the first such NNLO determination having all NNLO effects under full control.
Original languageEnglish
Pages (from-to)125-129
JournalNuclear and Particle Physics Proceedings
Volume260
DOIs
Publication statusPublished - 1 Mar 2015

Keywords

  • ChPT
  • LECs
  • QCD sum rules

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