Resonances and final state interactions in the reaction pp->pK^+Lambda

A study of the strangeness production reaction pp->pK^+Lambda for excess energies of epsilon \le 150 MeV, accessible at high-luminosity accelerator facilities like COSY, is presented. Methods to analyze the Dalitz plot distribution and angular spectra in the Jackson and helicity frames are worked out and suitable observables for extracting information on low lying resonances that couple to the K-Lambda system and for determining the Lambda-p effective-range parameters from the final state interaction are identified and discussed. Furthermore, the chances for identifying the reaction mechanism of strangeness production are investigated.Comment: 16 pages, 16 figure

Implications for (d,p) reaction theory from nonlocal dispersive optical model analysis of 40^{40}Ca(d,p)41^{41}Ca

The nonlocal dispersive optical model (NLDOM) nucleon potentials are used for the first time in the adiabatic analysis of a (d,p) reaction to generate distorted waves both in the entrance and exit channels. These potentials were designed and fitted by Mahzoon $et \text{ } al.$ [Phys. Rev. Lett. 112, 162502 (2014)] to constrain relevant single-particle physics in a consistent way by imposing the fundamental properties, such as nonlocality, energy-dependence and dispersive relations, that follow from the complex nature of nuclei. However, the NLDOM prediction for the $^{40}$Ca(d,p)$^{41}$Ca cross sections at low energy, typical for some modern radioactive beam ISOL facilities, is about 70$\%$ higher than the experimental data despite being reduced by the NLDOM spectroscopic factor of 0.73. This overestimation comes most likely either from insufficient absorption or due to constructive interference between ingoing and outgoing waves. This indicates strongly that additional physics arising from many-body effects is missing in the widely used current versions of (d,p) reaction theories.Comment: 14 pages, 15 figure

Spectroscopic factors and asymptotic normalization coefficients for 0p-shell nuclei: Recent updates

Extended tables are presented for spectroscopic factors, asymptotic normalization coefficients and rms radii of one-nucleon overlap functions for 0p-shell nuclei calculated in the source term approach using shell model wave functions. The tabulated data includes both new results and updates on previously published values. They are compared with recent results obtained in ab initio calculations, and with experimental data, where available. The reduction of spectroscopic factors with respect to traditional shell model values as well as its neutron-proton asymmetry is also discusse