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K¯NNquasibound state and theK¯Ninteraction: Coupled-channels Faddeev calculations of theK¯NN−πΣNsystem

N. V. Shevchenko, A. Gal, J. Mareš, J. Révai
2007 Physical Review C  

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2007 accepted arXiv:0706.4393v2 fatcat:xzbxqmm4kngoxm3zuc5wzmqlte

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2007 pre-print
arXiv:0706.4393v1 fatcat:b22asv6ps5bgnnq5p423okykfe
Coupled-channel three-body calculations of an I=1/2, J^π=0^- K̅NN quasi-bound state in the K̅NN - πΣ N system were performed and the dependence of the resulting three-body energy on the two-body K̅N - πΣ interaction was investigated. Earlier results of binding energy B_K^-pp∼ 50 -70 MeV and width Γ_K^-pp∼ 100 MeV are confirmed [N.V. Shevchenko et al., Phys. Rev. Lett. 98, 082301 (2007)]. It is shown that a suitably constructed energy-independent complex K̅N potential gives a considerably
more » ... er and narrower three-body quasi-bound state than the full coupled-channel calculation. Comparison with other calculations is made.
doi:10.1103/physrevc.76.044004 fatcat:cjupqxefdjdf3aedrha7sxhsg4
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N. V. Shevchenko, A. Gal, J. Mareš, J. Révai. "K¯NNquasibound state and theK¯Ninteraction: Coupled-channels Faddeev calculations of theK¯NN−πΣNsystem." Physical Review C 76.4 (2007)