{"paper":{"title":"A U-spin Puzzle in $B$ Decays","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Bhubanjyoti Bhattacharya, David London, Nicolas Payot, Suman Kumbhakar","submitted_at":"2022-11-13T19:01:24Z","abstract_excerpt":"We impose U spin symmetry ($SU(2)_{\\rm Uspin}$) on the Hamiltonian for $B$ decays. As expected, we find the equality of amplitudes related by the exchange $d \\leftrightarrow s$. We also find that the amplitudes for the $\\Delta S=0$ processes $B^0 \\to \\pi^+\\pi^-$, $B_s^0\\to\\pi^+ K^-$ and $B^0\\to K^+ K^-$ form a U-spin triangle relation. The amplitudes for $B_s^0\\to K^+ K^-$, $B^0\\to\\pi^- K^+$ and $B_s^0\\to\\pi^+\\pi^-$ form a similar $\\Delta S=1$ triangle relation. And these two triangles are related to one another by $d \\leftrightarrow s$. We perform fits to the observables for these six decays."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2211.06994","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/2211.06994/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"}