{"paper":{"title":"Lattice determination of the $K \\to (\\pi\\pi)_{I=2}$ Decay Amplitude $A_2$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"hep-lat","authors_text":"A. Soni, A.T. Lytle, C. Jung, C. Kelly, C. Lehner, C. Sturm, C.T. Sachrajda, E. Goode, M. Lightman, N. Garron, N.H. Christ, P.A. Boyle, Q. Liu, R.D. Mawhinney, T. Blum, T. Izubuchi","submitted_at":"2012-06-22T13:21:58Z","abstract_excerpt":"We describe the computation of the amplitude A_2 for a kaon to decay into two pions with isospin I=2. The results presented in the letter Phys.Rev.Lett. 108 (2012) 141601 from an analysis of 63 gluon configurations are updated to 146 configurations giving Re$A_2=1.381(46)_{\\textrm{stat}}(258)_{\\textrm{syst}} 10^{-8}$ GeV and Im$A_2=-6.54(46)_{\\textrm{stat}}(120)_{\\textrm{syst}}10^{-13}$ GeV. Re$A_2$ is in good agreement with the experimental result, whereas the value of Im$A_2$ was hitherto unknown. We are also working towards a direct computation of the $K\\to(\\pi\\pi)_{I=0}$ amplitude $A_0$ bu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1206.5142","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}