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13 papers · 2 filters
Nonlocal calculation for nonstrange dibaryons and tribaryons
R. D. Mota, A. Valcarce, F. Fernández +2
We study the possible existence of nonstrange dibaryons and tribaryons by solving the bound-state problem of the two- and three-body systems composed of nucleons and deltas. The tw…
Two-body correlations in N=8 and 10 nuclei and effective neutron-neutron interactions in Tamm-Dancoff and two-particle RPA models
J. C. Pacheco, N. Vinh Mau
We apply a particle-particle RPA model to study the properties of the two-neutron valence wave function in nuclei 14-C, 12-Be, 11-Li and 14-Be. The RPA model takes account of two b…
Extended van Royen-Weisskopf formalism for lepton-antilepton meson decay widths within non-relativistic quark models
L. A. Blanco, R. Bonnaz, B. Silvestre-Brac +2
The classical van Royen-Weisskopf formula for the decay width of a meson into a lepton-antilepton pair is modified in order to include non-zero quark momentum contributions within…
Effect of higher orbital angular momenta in the baryon spectrum
H. Garcilazo, A. Valcarce, F. Fernandez
We have performed a Faddeev calculation of the baryon spectrum for the chiral constituent quark model including higher orbital angular momentum states. We have found that the effec…
Deeply bound pionic atoms from the reaction in nuclei
S. Hirenzaki, E. Oset
We study the reaction on leading to with a bound pion attached to it in the lowest 1s or 2p pionic levels. The reaction can be made recoilless to opti…
Low lying S=-1 excited baryons and chiral symmetry
E. Oset, A. Ramos, C. Bennhold
The s-wave meson-baryon interaction in the sector is studied by means of coupled-channels, using the lowest-order chiral Lagrangian and the N/D method to implement unitari…