Scattering of charmed baryons on nucleons

Autor(es)

Haidenbauer, J. ^{[1, 2]} ; Krein, G. ^[3]

Afiliação do(s) autor(es)

^[1] Forschungszentrum Julich, Julich Ctr Hadron Phys, D-52425 Julich - Germany

^[2] Forschungszentrum Julich, Inst Kernphys, Inst Adv Simulat, D-52425 Julich - Germany

^[3] Univ Estadual Paulista, Inst Fis Teor, Rua Dr Bento Teobaldo Ferraz 271, Bloco 2, BR-01140070 Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: EUROPEAN PHYSICAL JOURNAL A; v. 54, n. 11 NOV 26 2018.
• Citações Web of Science: 5

Resumo

Chiral effective field theory is utilized for extrapolating results on the Lambda N-c interaction, obtained in lattice QCD at unphysical (large) quark masses, to the physical point. The pion-mass dependence of the components that constitute the Lambda N-c potential up to next-to-leading order (pion-exchange diagrams and four-baryon contact terms) is fixed by information from lattice QCD simulations. No recourse to SU(3) or SU(4) flavor symmetry is made. It is found that the results of the HAL QCD Collaboration for quark masses corresponding to m(pi) = 410-570MeV imply a moderately attractive Lambda N-c interaction at m(pi) = 138MeV with scattering lengths of a approximate to -1 fm for the S-1(0) as well as the S-3(1) partial waves. For such an interaction the existence of a charmed counterpart of the hypertriton seems unlikely but four- and/or five-baryons systems with a Lambda(c) baryon could be indeed bound. (AU)

• Processo FAPESP: 13/01907-0 - Centro de Pesquisa e Análise de São Paulo
• Beneficiário: Sergio Ferraz Novaes
• Modalidade de apoio: Auxílio à Pesquisa - Temático