{"corpus_id":30156962,"paper_sha":"d7e615c173ba97a52d93bb34bd998598717a6eb6","doi":"10.1103/PhysRevLett.95.232001","arxiv_id":"hep-ph/0508060","pmid":16384297,"pmcid":null,"mag_id":2069625924,"dblp_id":null,"acl_id":null,"title":"Electromagnetic nucleon-to-delta transition in chiral effective-field theory.","year":2005,"publication_date":"2005-08-04","venue":"Physical Review Letters","journal":{"name":"Physical review letters","pages":"\n          232001\n        ","volume":"95 23"},"journal_issn":null,"journal_title":null,"publication_types":["JournalArticle"],"pubmed_pub_types":["Journal Article"],"s2_fields_of_study":["Medicine","Physics"],"reference_count":3,"citation_count":53,"influential_citation_count":0,"is_open_access":true,"arxiv_categories":["hep-ph","hep-lat","nucl-th"],"arxiv_license":null,"arxiv_journal_ref":"Phys.Rev.Lett.95:232001,2005","mesh_headings":null,"chemicals":null,"comments_corrections":null,"source_flags":5,"s2_open_access_pdf_url":"https://arxiv.org/pdf/hep-ph/0508060","s2_open_access_landing_url":"https://www.semanticscholar.org/paper/d7e615c173ba97a52d93bb34bd998598717a6eb6","s2_open_access_license":null,"s2_open_access_status":"GREEN","pmc_open_access_pdf_url":null,"pmc_open_access_landing_url":null,"pmc_open_access_license":null,"pmc_open_access_status":null,"unpaywall_open_access_pdf_url":null,"unpaywall_open_access_landing_url":null,"unpaywall_open_access_license":null,"unpaywall_open_access_status":null,"abstract":"We perform a relativistic chiral effective-field theory calculation of pion electroproduction off the nucleon (e- N --> e- N(pi)) in the delta(1232)-resonance region. After fixing the three low-energy constants, corresponding to the magnetic (M1), electric (E2), and Coulomb (C2) gammaNdelta couplings, our calculation provides a prediction for the momentum transfer and pion-mass dependence of the gammaNdelta form factors. The prediction for the pion-mass dependence resolves the discrepancy between the recent lattice QCD results and the experimental value for the \"C2/M1 ratio\" at low Q2.","claims":[{"public_id":"cl_92b833515c896bab48160552db247c15","status":"active","text":"A relativistic chiral effective-field theory calculation of pion electroproduction in the delta(1232)-resonance region predicts the momentum-transfer and pion-mass dependence of the gammaNdelta form factors after fixing the M1, E2, and C2 low-energy constants.","confidence":0.97,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_92b833515c896bab48160552db247c15"},{"public_id":"cl_1bb8879fa7fddefa6dfac7619e7faf9c","status":"active","text":"The predicted pion-mass dependence resolves the discrepancy between recent lattice QCD results and the experimental value of the C2/M1 ratio at low 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