In our recent paper, we presented a fit to neutron-proton and proton-proton scattering data below the pion production threshold. A new data selection process was used to obtain the largest mutually consistent database from all data reported during the years 1950-2013. However, the provided information was not enough to reconstruct the full database.In Tables II and III we list the total measurements n i and the final number o f measurements actually used in the fit «2 for pp and np data, respectively. For some sets of data in the table, n\ > ri2 due to the rejection of individual outliers, but the specific data were not given. Below we give the outliers not provided in the paper. This information should provide the reader with the full information needed to reconstruct the complete database used in our analysis.We list in Tables I and II below the outliers specifically not considered in the final fit. These tables together with the original cited papers provide complete information on our analysis.The results and conclusion of the article are not affected.
We undertake a simultaneous partial wave analysis of proton-proton and neutron-proton scattering data below the pion production threshold up to laboratory energies of 350 MeV. We represent the interaction as a sum of δ shells in configuration space below 3 fm and a charge dependent one pion exchange potential above 3 fm together with electromagnetic effects. We obtain a chi square value of 2813, for pp, and 3985, for nn, with a total of 2747 and 3691 pp and nn data, respectively, obtained till 2013 and a total number of 46 fitting parameters yielding a chi square value by degree of freedom of χ 2 /d.o.f = 1.06. Special attention is payed to estimate the errors of the phenomenological interaction as well as the derived effects on the phase shifts and scattering amplitudes.
International audienceWe describe the new version 3.00 of the code hfbtho that solves the nuclear Hartree–Fock (HF) or Hartree–Fock–Bogolyubov (HFB) problem by using the cylindrical transformed deformed harmonic oscillator basis. In the new version, we have implemented the following features: (i) the full Gogny force in both particle–hole and particle–particle channels, (ii) the calculation of the nuclear collective inertia at the perturbative cranking approximation, (iii) the calculation of fission fragment charge, mass and deformations based on the determination of the neck, (iv) the regularization of zero-range pairing forces, (v) the calculation of localization functions, (vi) a MPI interface for large-scale mass table calculations
We present a minimal nuclear energy density functional (NEDF) called "SeaLL1" that has the smallest number of possible phenomenological parameters to date. SeaLL1 is defined by 7 significant phenomenological parameters, each related to a specific nuclear property. It describes the nuclear masses of even-even nuclei with a mean energy error of 0.97 MeV and a standard deviation 1.46 MeV, two-neutron and two-proton separation energies with rms errors of 0.69 MeV and 0.59 MeV respectively, and the charge radii of 345 even-even nuclei with a mean error r = 0.022 fm and a standard deviation σ r = 0.025 fm. SeaLL1 incorporates constraints on the equation of state (EoS) of pure neutron matter from quantum Monte Carlo calculations with chiral effective field theory two-body (NN) interactions at next-to-next-to-next-to leading order (N2LO) level and three-body (NNN) interactions at the next-to-next-to leading order (N2LO) level. Two of the seven parameters are related to the saturation density and the energy per particle of the homogeneous symmetric nuclear matter, one is related to the nuclear surface tension, two are related to the symmetry energy and its density dependence, one is related to the strength of the spin-orbit interaction, and one is the coupling constant of the pairing interaction. We identify additional phenomenological parameters that have little effect on ground-state properties, but can be used to fine-tune features such as the Thomas-Reiche-Kuhn sum rule, the excitation energy of the giant dipole and Gamow-Teller resonances, the static dipole electric polarizability, and the neutron skin thickness.
There exist four pion nucleon coupling constants, f π 0 pp , −f π 0 nn , f π + pn / √ 2 and f π − np / √ 2 which coincide when up and down quark masses are identical and the electron charge is zero. While there is no reason why the pion-nucleon-nucleon coupling constants should be identical in the real world, one expects that the small differences might be pinned down from a sufficiently large number of independent and mutually consistent data. Our discussion provides a rationale for our recent determination
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