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The updated prediction for ${\\cal R}(\\Lambda_c)"},"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":"1905.08253","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-05-20T18:00:01Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"0111880517f8c12998b65d9b39045d6a90c307ea2fa1812308e60ff77555046c","abstract_canon_sha256":"889e042054c0bc7f77408aa00c31705272c034cdccd85930affbf4675ab0bd2e"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:00:26.270950Z","signature_b64":"P0Uf66Ep4Tii1Ul9AW9xaRtVfwrUGe+LeiASF3Q4U4YswBzXSmnbwTcGSivQf7W3t0rezRJB8EeY4LRRnXluBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"53658a78babbd26ac9ea5879d5a64a4a3a33660dcbfd2b275ff80e5bf0617412","last_reissued_at":"2026-07-05T00:00:26.270456Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:00:26.270456Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Addendum to \"Impact of polarization observables and $B_c\\to \\tau \\nu$ on new physics explanations of the $b\\to c \\tau \\nu$ anomaly\"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Andreas Crivellin, Ivan Ni\\v{s}and\\v{z}i\\'c, Marta Moscati, Monika Blanke, Teppei Kitahara, Ulrich Nierste","submitted_at":"2019-05-20T18:00:01Z","abstract_excerpt":"In this addendum to arXiv:1811.09603 we update our results including the recent measurement of ${\\cal R}(D)$ and ${\\cal R}(D^*)$ by the Belle collaboration: ${\\cal R}(D)_{\\rm Belle} = 0.307\\pm0.037\\pm0.016$ and ${\\cal R}(D^*)_{\\rm Belle}=0.283\\pm0.018\\pm0.014$, resulting in the new HFLAV fit result ${\\cal R}(D) = {0.340\\pm0.027 \\pm 0.013}$, ${\\cal R}(D^*) = {0.295\\pm0.011 \\pm 0.008 }$, exhibiting a $3.1\\,\\sigma$ tension with the Standard Model. 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