{"paper":{"title":"Single-pole nature of Lambda (1405) and structure of K-pp","arxiv_id":"1002.2560","primary_cat":"nucl-th","submitted_at":"2010-02-12T14:14:38+00:00","version_compiled":"v1"},"notice":"Every quoted sentence is the authors' text from the arXiv listing abstract. Labels and probabilities are the outputs of classifier-1.13-20260917 on the question bank abstract-p1-20260923, exactly as returned. No sentence in this record was written by a language model.","schema":"pith.compiled-record/v0","status":"compiled","abstract":{"source":"arXiv listing abstract v1","sentences":[{"i":0,"p":0.58,"id":"s0","own":true,"role":"method","text":"We have studied the structure of K- pp by solving this system in a variational treatment, starting from ansatz that Lambda(1405) is a K-p quasi-bound state, Lambda* with mass 1405 MeV/c2.","hedge":{"p":0.99,"label":"asserted"},"own_p":0.93,"main_claim_p":0.07,"quantitative":true,"quantitative_p":0.9,"role_probabilities":{"gap":0.0,"method":0.58,"result":0.0,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.42,"interpretation":0.0}},{"i":1,"p":0.59,"id":"s1","own":true,"role":"interpretation","text":"The structure of K-pp reveals a molecular feature, namely, the K- in an \"atomic center\", Lambda*, plays a key role in producing strong covalent bonding with the other proton.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.78,"main_claim_p":0.27,"quantitative":false,"quantitative_p":0.06,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.41,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.59}},{"i":2,"p":0.79,"id":"s2","own":false,"role":"interpretation","text":"Deeply bound Kbar nuclear systems are formed by this \"super-strong\" nuclear force due to migrating real bosons, Kbar, a la Heitler-London-Heisenberg, which overcompensates the stiff nuclear incompressibility.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.4,"main_claim_p":0.13,"quantitative":false,"quantitative_p":0.35,"role_probabilities":{"gap":0.0,"method":0.01,"result":0.19,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.01,"interpretation":0.79}},{"i":3,"p":0.99,"id":"s3","own":false,"role":"background","text":"Theoretical background of the Lambda (1405) ansatz is discussed in connection with the double-pole picture of Lambda (1405) based on chiral SU(3) dynamics.","hedge":{"p":0.75,"label":"asserted"},"own_p":0.23,"main_claim_p":0.04,"quantitative":false,"quantitative_p":0.15,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.0,"background":0.99,"limitation":0.0,"future_work":0.0,"contribution":0.01,"interpretation":0.0}},{"i":4,"p":0.99,"id":"s4","own":true,"role":"result","text":"Detailed analysis reveals single-pole nature of the observable Lambda (1405).","hedge":{"p":1.0,"label":"asserted"},"own_p":0.89,"main_claim_p":0.72,"quantitative":false,"quantitative_p":0.27,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.99,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.01}},{"i":5,"p":0.88,"id":"s5","own":false,"role":"background","text":"There are two kinds of Sigma pi invariant masses experimentally observable, the usual T22 invariant mass and the conversion T21 invariant mass.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.15,"main_claim_p":0.03,"quantitative":false,"quantitative_p":0.28,"role_probabilities":{"gap":0.01,"method":0.07,"result":0.01,"background":0.88,"limitation":0.0,"future_work":0.0,"contribution":0.03,"interpretation":0.0}},{"i":6,"p":0.74,"id":"s6","own":false,"role":"gap","text":"It is of vital importance to determine whether the Lambda* mass is 1405 MeV or 1420 MeV.","hedge":{"p":0.87,"label":"asserted"},"own_p":0.08,"main_claim_p":0.04,"quantitative":true,"quantitative_p":0.9,"role_probabilities":{"gap":0.74,"method":0.0,"result":0.0,"background":0.26,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.0}},{"i":7,"p":0.41,"id":"s7","own":false,"role":"method","text":"The T21 invariant mass from K- absorption at rest in deuteron can provide decisive information about this Lambda* mass 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