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Bali, Sara Collins, Wolfgang S\\\"oldner","submitted_at":"2016-03-02T19:00:40Z","abstract_excerpt":"We present a high statistics study of the pion and nucleon light and strange quark sigma terms using $N_f=2$ dynamical non-perturbatively improved clover fermions with a range of pion masses down to $m_\\pi\\sim 150$ MeV and several volumes, $Lm_\\pi=3.4$ up to $6.7$, and lattice spacings, $a=0.06-0.08$ fm, enabling a study of finite volume and discretisation effects for $m_\\pi\\gtrsim 260$ MeV. Systematics are found to be reasonably under control. For the nucleon we obtain $\\sigma_{\\pi N}=35(6)$ MeV and $\\sigma_s=35(12)$ MeV, or equivalently in terms of the quark fractions, $f_{T_u}=0.021(4)$, $f"},"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":"1603.00827","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2016-03-02T19:00:40Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"a329c5e9cbe3a4b981170dc98c641281153648c8e8770f54e5a30317007e6236","abstract_canon_sha256":"605a0afffe5353d9f04a61b4339ef6c16ac3a1607dc63d82346d14e0c51197a0"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:09:51.455924Z","signature_b64":"LsdFF1WX9LSuUxvQDnnqdDn2Cc7zxLph+w0G3G5N0ZtAGKQxg+KkwzL+JxQcY5FSxjak24+vRwqKacHTutxrAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7a5a373f641285815e4bb6f4a2cc596a4e905b6ac74f6521695a55f44ab5dca7","last_reissued_at":"2026-05-18T01:09:51.455337Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:09:51.455337Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Direct determinations of the nucleon and pion $\\sigma$ terms at nearly physical quark masses","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"hep-lat","authors_text":"Andreas Sch\\\"afer, Andr\\'e Sternbeck, Daniel Richtmann, Gunnar S. 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