PARIS N(N)OVER-BAR POTENTIAL AND RECENT PROTON-ANTIPROTON LOW-ENERGY DATA

被引：57

作者：

PIGNONE, M

LACOMBE, M

LOISEAU, B

MAU, RV

机构：

[1] INST PHYS NUCL LYON, DIV PHYS THEOR, F-91406 ORSAY, FRANCE

[2] UNIV PARIS 06, LPTPE, F-75252 PARIS 05, FRANCE

来源：

PHYSICAL REVIEW C | 1994年 / 50卷 / 06期

关键词：

D O I：

10.1103/PhysRevC.50.2710

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The inner part of the Paris nucleon-antinucleon optical potential has been reanalyzed in view of new experimental constraints. These are mainly provided by accurate measurements of the analyzing power in charge-exchange scattering, p̄p→n̄n, together with elastic p̄p→p̄p polarization data, allowing a better determination of the isospin dependence of the short-range forces. The fit is performed with a set of 3632 data. The good quality of the fit is illustrated over a large sample of observables for laboratory momenta from 180 to 910 MeV/c. Curves of the potentials and of the phase shifts are shown as well as the parameters of the potentials and effective range formula coefficients for the S and P waves. The spectrum of resonances and bound states predicted by our potential is also displayed. In particular, a bound state having the AX(1565) quantum numbers is found with the right mass. © 1994 The American Physical Society.

引用

页码：2710 / 2730

页数：21

共 57 条

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