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Meurice, Yuzhi Liu","submitted_at":"2015-07-06T20:50:33Z","abstract_excerpt":"The rare decay $B\\to\\pi\\ell^+\\ell^-$ arises from $b\\to d$ flavor-changing neutral currents and could be sensitive to physics beyond the Standard Model. Here, we present the first $ab$-$initio$ QCD calculation of the $B\\to\\pi$ tensor form factor $f_T$. Together with the vector and scalar form factors $f_+$ and $f_0$ from our companion work [J. A. Bailey $et~al.$, Phys. Rev. D 92, 014024 (2015)], these parameterize the hadronic contribution to $B\\to\\pi$ semileptonic decays in any extension of the Standard Model. We obtain the total branching ratio ${\\text{BR}}(B^+\\to\\pi^+\\mu^+\\mu^-)=20.4(2.1)\\ti"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1507.01618","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"hep-ph","submitted_at":"2015-07-06T20:50:33Z","cross_cats_sorted":["hep-lat"],"title_canon_sha256":"15b6df82c54e6ee5ead21a3b7f7496cec3bca26a0fa9e6717f6736aee5b30d8c","abstract_canon_sha256":"eae7d5d8497ad3a34db2582a0d0c7fe1001c06b7da3bc8000930b3186a571a8b"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:30:23.838360Z","signature_b64":"27hUVVFGxM5yc1lBv3c1uZZKO0uDhSVzpKXBYZoxyzy8f8bY2xtSsc8eVjBMSIEi0gDtfSzrDyC5yy1pBIfkAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6bd60bd7df00a49760b563d732768ef0bb70ad4361f1a0975b099030a4ecbcf4","last_reissued_at":"2026-05-18T01:30:23.837729Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:30:23.837729Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"$B\\to\\pi\\ell\\ell$ form factors for new-physics searches from lattice QCD","license":"http://creativecommons.org/publicdomain/zero/1.0/","headline":"","cross_cats":["hep-lat"],"primary_cat":"hep-ph","authors_text":"A. Bazavov, A. S. Kronfeld, A. X. El-Khadra, C. Bernard, C. DeTar, C. M. Bouchard, Daping Du, D. Toussaint, E. D. Freeland, E. Gamiz, E. Lunghi, E. Neil, J. Laiho, J. N. Simone, Jon A. Bailey, L. Levkova, P.B. Mackenzie, Ran Zhou, R. Sugar, R. S. Van de Water, Si-Wei Qiu, Steven Gottlieb, U. M. Heller, Y. Meurice, Yuzhi Liu","submitted_at":"2015-07-06T20:50:33Z","abstract_excerpt":"The rare decay $B\\to\\pi\\ell^+\\ell^-$ arises from $b\\to d$ flavor-changing neutral currents and could be sensitive to physics beyond the Standard Model. Here, we present the first $ab$-$initio$ QCD calculation of the $B\\to\\pi$ tensor form factor $f_T$. Together with the vector and scalar form factors $f_+$ and $f_0$ from our companion work [J. A. Bailey $et~al.$, Phys. Rev. D 92, 014024 (2015)], these parameterize the hadronic contribution to $B\\to\\pi$ semileptonic decays in any extension of the Standard Model. 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