{"paper":{"title":"FLAG Review 2021","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"hep-lat","authors_text":"A. J\\\"uttner, A. Nicholson, A. Portelli, A. Ramos, C. Monahan, C. Pena, E. Lunghi, G. Colangelo, G. Herdoiza, H. Fukaya, H. Wittig, J. N. Simone, M. Della Morte, M. Golterman, N. Tantalo, P. Dimopoulos, P. Hernandez, P. Petreczky, R. Gupta, R. Horsley, R. Sommer, R. Van de Water, S. Collins, S. D\\\"urr, S. Hashimoto, S. Meinel, S. R. Sharpe, S. Simula, S. Sint, Steven Gottlieb, T. Blum, T. Kaneko, T. Onogi, U. M. Heller, U. Wenger, X. Feng, Y. Aoki","submitted_at":"2021-11-18T18:14:39Z","abstract_excerpt":"We review lattice results related to pion, kaon, $D$-meson, $B$-meson, and nucleon physics with the aim of making them easily accessible to the nuclear and particle physics communities. More specifically, we report on the determination of the light-quark masses, the form factor $f_+(0)$ arising in the semileptonic $K \\to \\pi$ transition at zero momentum transfer, as well as the decay constant ratio $f_K/f_\\pi$ and its consequences for the CKM matrix elements $V_{us}$ and $V_{ud}$. Furthermore, we describe the results obtained on the lattice for some of the low-energy constants of $SU(2)_L\\time"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.09849","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2111.09849/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}