| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1846709 | Nuclear Physics B - Proceedings Supplements | 2009 | 6 Pages |
Abstract
A sum rule analysis of the hadronic τ-decay data can be used to determine the low-energy constants and . These constants are QCD chiral-order parameters, which appear at order p4 and p6, respectively, in the chiral perturbation theory expansion of the V−A correlator. At order p4 we obtain . Including in the analysis the order p6 contributions, we get and .
Related Topics
Physical Sciences and Engineering
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Nuclear and High Energy Physics
