Paris nucleon-antinucleon potential constrained by recent antiprotonic-atom data and antineutron-proton total cross sections

Details Paris nucleon-antinucleon potential constrained by recent antiprotonic-atom data and antineutron-proton total cross sections Paris nucleon-antinucleon potential constrained by recent antiprotonic-atom data and antineutron-proton total cross sections

2008-07-28

arxiv.org/abs/0807.4454v2

Phys.Rev.C79:054001,2009

Physics

Nuclear Physics

Nuclear Theory

10 pages, 20 figures, expanded version with more details

Scientific paper

10.1103/PhysRevC.79.054001

We report on an updated Paris nucleon-antinucleon optical potential. The long- and intermediate-range real parts are obtained by G-parity transformation of the Paris nucleon-nucleon potential based on a theoretical dispersion-relation treatment of the correlated and uncorrelated two-pion exchange. The short-range imaginary potential parametrization results from the calculation of the nucleon-antinucleon annihilation box diagram into two mesons with a nucleon-antinucleon intermediate state in the crossed channel. The parametrized real and imaginary short range parts are determined by fitting not only the existing experimental data included in the 1999 version of the Paris nucleon-antinucleon potential, but also the recent antiprotonic-hydrogen data and antineutron-proton total cross sections. The description of these new observables is improved. Only this readjusted potential generates an isospin zero 1S0, 52 MeV broad quasibound state at 4.8 MeV below the threshold. Recent BES data on J/psi decays could support the existence of such a state.

Affiliated with

Also associated with

No associations

Rating

Paris nucleon-antinucleon potential constrained by recent antiprotonic-atom data and antineutron-proton total cross sections does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Paris nucleon-antinucleon potential constrained by recent antiprotonic-atom data and antineutron-proton total cross sections, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Paris nucleon-antinucleon potential constrained by recent antiprotonic-atom data and antineutron-proton total cross sections will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-313271