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An exploratory lattice study of decays at next-to-leading order in the chiral expansion

✍ Scribed by Philippe Boucaud; Vicent Giménez; C.-J. David Lin; Vittorio Lubicz; Guido Martinelli; Mauro Papinutto; Chris T. Sachrajda


Book ID
116796246
Publisher
Elsevier Science
Year
2005
Tongue
English
Weight
454 KB
Volume
721
Category
Article
ISSN
0550-3213

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We present the ingredients for determining Kf --t 7r+7r" matrix elements via the combination of lattice QCD and chiral perturbation theory (xPT). By simulating these matrix elements at unphysical kinematics, it is possible to determine all the low-energy constants (LECs) for constructing the physica