Citation information
Download a table with our results
Papers where the database and PWA has been studied and used
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Educational PWA and demonstration and embedded database apps
A partial-wave decomposition of the potential allowed us to incorporate charge dependence in the 1S0 parameters. The rest of the parameters are charge independent. A comprehensive and ready-to-use review of the necessary theory to compute the full on-shell electromagnetic scattering amplitude was made. This includes every single EM contribution that turns out to be crucial for the correct description of pp and np scattering observables.
The 3*SIGMA criterion was used iteratively to obtain a fully consistent database with N=6713 data, including normalization data. The complete data selection process allowed us to recover a total of 300 data that a single application of the 3*SIGMA criterion would have rejected.
The fitting parameters, their uncertainties, and correlations were determined from the final consistent database. Errors in the potential can be propagated to other quantities obtained with the delta-shell representation. Phase shifts were extracted from the data and are presented here with the corresponding statistical error bars.
Partial-wave analysis of nucleon-nucleon scattering below the pion-production threshold
Physical Review C 88, 024002 (2013)
Coarse-grained potential analysis of neutron-proton and proton-proton scattering below the pion production threshold
Physical Review C 88, 064002 (2013)
Download a table of phase-shifts from our PWA of the database with delta-shell potential plus OPE for long distances
Our colaboration has published about 20 articles
related to the NN interaction and the Granada database.
Several papers are the results of scientific collaboration
with external researchers: Eduardo Garrido, Maria Piarulli, Rocco Schiavilla, and Luca Girlanda.
Papers published in peer-reviewed journals are listed below.
The articles below are posted with permission from their publishers.
Single copies of an article can be downloaded and printed only for the reader's personal research and study.
Phenomenological high precision neutron-proton delta-shell potential
Physics Letters B 724 (2013) 138
Partial-wave analysis of nucleon-nucleon scattering below the pion-production threshold
Physical Review C 88, 024002 (2013)
Coarse-grained potential analysis of neutron-proton and proton-proton scattering below the pion production threshold
Physical Review C 88, 064002 (2013)
Coarse-grained NN potential with chiral two-pion exchange
Physical Review C 89, 024004 (2014)
Statistical error analysis for phenomenological nucleon-nucleon potentials
Physical Review C 89, 064006 (2014)
Bootstrapping the statistical uncertainties of NN scattering data
Physics Letters B 738 (2014) 155
Triton binding energy with realistic statistical uncertainties
Physical Review C 90, 047001 (2014)
Error analysis of nuclear forces and effective interactions
Journal of Physics G (2014) to be published
The low energy structure of the nucleon-nucleon interaction: statistical vs. systematic uncertainties
Submitted
Low energy chiral two pion exchange with statistical uncertainties
Submitted
Minimally non-local nucleon-nucleon potentials in chiral-EFT at order Q4
Submitted
Complete PP and NP databases are available for free download as a zip file
This Android app is an educational demonstration of the phase-shifts partial wave analysis techniques. It is also a demonstration of the computational power of smartphones and tablets. The goal is to fit the NN interaction and to compute the binding energy of the helium nucleus and nuclear matter.
Download app from google play
Download source code
This Android app provides an embeded NN database. Don't need an internet connection to perform database queries. The result can be written in a local file in the mobile device.
Note that this is not the 2013 Granada database, but the 1993 database used in the Nijmegen PWA, that can be found in the NN-online web page.
Download app from google play
We welcome all feedback! Please e-mail us rnavarro@ugr.es, earriola@ugr.es, amaro@ugr.es