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|Title:||Combined NNLO lattice-continuum determination of Lr₁₀|
|Other Titles:||Combined NNLO lattice-continuum determination of Lr(10)|
Del Debbio, L.
|Citation:||Physical Review D - Particles, Fields, Gravitation and Cosmology, 2014; 89(9):094510-1-094510-12|
|Publisher:||American Physical Society|
|P. A. Boyle, L. Del Debbio, N. Garron, R. J. Hudspith, E. Kerrane, K. Maltman, and J. M. Zanotti|
|Abstract:||The renormalized next-to-leading-order chiral low-energy constant, Lr10, is determined in a complete next-to-next-to-leading-order (NNLO) analysis, using a combination of lattice and continuum data for the flavor ud V−A correlator and results from a recent chiral sum-rule analysis of the flavor-breaking combination of ud and us V−A correlator differences. The analysis also fixes two combinations of NNLO low-energy constants, the determination of which is crucial to the precision achieved for Lr10. Using the results of the flavor-breaking chiral V−A sum rule obtained with current versions of the strange hadronic τ branching fractions as input, we find Lr10(mρ)=−0.00346(32). This result represents the first NNLO determination of Lr10, having all inputs under full theoretical and/or experimental control, and the best current precision for this quantity.|
|Rights:||© 2014 American Physical Society|
|Appears in Collections:||Physics publications|
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