TY - JOUR
T1 - Coupled channel Faddeev calculations of a K̄Nπ quasibound state
AU - Gal, A.
AU - Garcilazo, H.
N1 - Funding Information:
This work was supported in part by the EU initiative FP7, HadronPhysics2, under Project No. 227431, and in part by COFAA-IPN (México).
PY - 2011/8/1
Y1 - 2011/8/1
N2 - The K̄Nπ system is studied using separable interactions fitted to data available on the s-wave K̄N-πY subsystem and the p-wave πN, πY, ππ and πK̄ subsystems. Three-body K̄Nπ-πYπ coupled channel Faddeev equations with relativistic kinematics are solved in search for poles in the complex energy plane. A K̄Nπ quasibound pole with quantum numbers I(JP)=1(3/2π) is found near and below the K̄Nπ threshold, its precise location depending sensitively on the poorly known shape of the p-wave πY interaction. This K̄Nπ quasibound state suggests the existence of a D13 π resonance with width about 60 MeV near threshold (Mπ1570 MeV), excluding meson absorption contributions.
AB - The K̄Nπ system is studied using separable interactions fitted to data available on the s-wave K̄N-πY subsystem and the p-wave πN, πY, ππ and πK̄ subsystems. Three-body K̄Nπ-πYπ coupled channel Faddeev equations with relativistic kinematics are solved in search for poles in the complex energy plane. A K̄Nπ quasibound pole with quantum numbers I(JP)=1(3/2π) is found near and below the K̄Nπ threshold, its precise location depending sensitively on the poorly known shape of the p-wave πY interaction. This K̄Nπ quasibound state suggests the existence of a D13 π resonance with width about 60 MeV near threshold (Mπ1570 MeV), excluding meson absorption contributions.
KW - Faddeev equations
KW - Kaon-baryon interactions
KW - Meson-meson interactions
KW - Pion-baryon interactions
UR - http://www.scopus.com/inward/record.url?scp=79960640278&partnerID=8YFLogxK
U2 - 10.1016/j.nuclphysa.2011.06.022
DO - 10.1016/j.nuclphysa.2011.06.022
M3 - Artículo
SN - 0375-9474
VL - 864
SP - 153
EP - 166
JO - Nuclear Physics, Section A
JF - Nuclear Physics, Section A
IS - 1
ER -