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Title

ΛNN and ΣNN systems at threshold. II. The effect of D waves

AuthorsGarcilazo, H.; Valcarce, A.; Fernández Caramés, Teresa
Keywords[PACS] Hyperon–nucleon interactions (energy ≤ 10 GeV)
[PACS] Nonrelativistic quark model
[PACS] Nuclear few-body systems
Issue Date4-Sep-2007
PublisherAmerican Physical Society
CitationPhysical Review C 76(3): 034001 (2007)
AbstractUsing the two-body interactions obtained from a chiral constituent quark model, we study all ΛNN and ΣNN states with I=0,1,2 and J=1/2,3/2 at threshold, taking into account all three-body configurations with S and D wave components. We constrain further the limits for the ΛN spin-triplet scattering length a(1/2,1). Using the hypertriton binding energy, we find a narrow interval for the possible values of the ΛN spin-singlet scattering length a(1/2,0). We find that the ΣNN system has a quasibound state in the (I,J)=(1,1/2) channel very near threshold with a width of about 2.1 MeV.
Description7 pages, 5 figures.-- PACS nrs.: 13.75.Ev; 12.39.Jh; 21.45.+v.-- ISI Article Identifier: 000249786600005.-- ArXiv pre-print available at: http://arxiv.org/abs/0708.0199
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevC.76.034001
URIhttp://hdl.handle.net/10261/9101
DOI10.1103/PhysRevC.76.034001
ISSN0556-2813
Appears in Collections:(IFIC) Artículos
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