2024-03-28T23:34:59Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1255742016-02-18T03:48:37Zcom_10261_61com_10261_4col_10261_314
(K)over-bar N N absorption within the framework of the fixed-center approximation to Faddeev equations
Bayar, M.
Oset, Eulogi
Generalitat Valenciana
Kaon-nucleon interactions
Meson-baryon scattering
Chiral dynamics
Bound states
Energy
Systems
We present a method to evaluate the (K) over bar absorption width in the bound (K) over bar N N system. Most calculations of this system ignore this channel and only consider the (K) over bar N -> pi Sigma conversion. Other works make a qualitative calculation using perturbative methods. Since the (1405) resonance is playing a role in the process, the same resonance is changed by the presence of the absorption channels andwe find that a full nonperturbative calculation is called for, which we present here. We employ the fixed center approximation to Faddeev equations to account for (K) over bar rescattering on the (NN) cluster and we find that the width of the states found previously for S = 0 and S = 1 increases by about 30 MeV due to the (K) over bar N N absorption, to a total width of about 80 MeV.
2015-11-24T08:04:09Z
2015-11-24T08:04:09Z
2013-10-23
artículo
Physical Review - Section C - Nuclear Physics 88 (4): 044003 - 8 (2013)
0556-2813
http://hdl.handle.net/10261/125574
10.1103/PhysRevC.88.044003
1089-490X
http://dx.doi.org/10.13039/501100003359
eng
Preprint
http://dx.doi.org/10.1103/PhysRevC.88.044003
Sí
openAccess
American Physical Society