منابع مشابه
Nucleon–nucleon and Pion–nucleon Potentials from Phase Shifts Using Quantum Inversion
NN and πN partial wave radial potentials have been generated using the latest SM94–VPI(NN) and FA93–VPI(πN) phase shifts. The potentials are used to determine the deuteron properties and to compute the H and He binding energies. The ε1 mixing angles of SM94–VPI and NY93–Nijmegen differ significantly and inversion potentials yield a Pd of 6.37% and 5.78%, respectively. Under–binding of H and He ...
متن کاملp–wave pion production from nucleon-nucleon collisions
1Institut für Kernphysik (Theorie) and Jülich Center for Hadron Physics, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany 2Institute for Theoretical and Experimental Physics, 117218, B. Cheremushkinskaya 25, Moscow, Russia 3Helmholtz-Institut für Strahlenund Kernphysik (Theorie), Bethe Center for Theoretical Physics, Universität Bonn, D-53115 Bonn, Germany 4Institute for Advanced Simulati...
متن کاملReanalysis of pion pion phase shifts from K → ππ decays
We re-investigate the impact of isospin violation for extracting the s-wave ππ scattering phase shift difference δ 0 (M K) − δ 2 (M K) from K → ππ decays. Compared to our previous analysis in 2003, more precise experimental data and improved knowledge of low-energy constants are used. In addition, we employ a more robust data-driven method to obtain the phase shift difference δ 0
متن کاملThe S-Wave Pion-Nucleon Scattering Lengths from Pionic Atoms using Effective Field Theory
The pion-deuteron scattering length is computed to next-to-next-to-leading order in baryon chiral perturbation theory. A modified power-counting is then formulated which properly accounts for infrared enhancements engendered by the large size of the deuteron, as compared to the pion Compton wavelength. We use the precise experimental value of the real part of the pion-deuteron scattering length...
متن کاملChiral three-nucleon forces from p-wave pion production.
Production of p-wave pions in nucleon-nucleon collisions is studied according to an improved power counting that embodies the constraints of chiral symmetry. Contributions from the first two nonvanishing orders are calculated. We find reasonable convergence and agreement with data for a spin-triplet cross section in pp-->pppi(0), with no free parameters. Agreement with existing data for a spin-...
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ژورنال
عنوان ژورنال: Progress of Theoretical Physics
سال: 1960
ISSN: 0033-068X
DOI: 10.1143/ptp.24.459