Paris [ital N[bar N]] potential and recent proton-antiproton low energy data

Journal Article · Thu Dec 01 04:00:00 EST 1994 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.50.2710· OSTI ID:6848016

Lacombe, M; Loiseau, B; Vinh Mau, R ^[1]

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1. Istituto Nazionale di Fisica Nucleare, Sezione di Torino, 10125 Torino (Italy) Division de Physique Theorique, Institut de Physique Nucleaire, 91406 Orsay Cedex (France) LPTPE, Universite Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05 (France)

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, [ital [bar p]p][r arrow][ital [bar n]n], together with elastic [ital [bar p]p][r arrow][ital [bar p]p] 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/[ital 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 [ital S] and [ital P] waves. The spectrum of resonances and bound states predicted by our potential is also displayed. In particular, a bound state having the [ital AX](1565) quantum numbers is found with the right mass.

• OSTI ID: 6848016
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 50:6; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANALYZING POWER
ANTINUCLEON REACTIONS
ANTIPROTON REACTIONS
BARYON REACTIONS
BARYON-BARYON INTERACTIONS
BOUND STATE
CHARGE-EXCHANGE REACTIONS
DATA ANALYSIS
ELASTIC SCATTERING
ENERGY RANGE
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
HYDROGEN 1 TARGET
INTERACTIONS
MEV RANGE
MEV RANGE 10-100
MEV RANGE 100-1000
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEON-ANTINUCLEON INTERACTIONS
OPTICAL MODELS
PARTIAL WAVES
PARTICLE INTERACTIONS
PHASE SHIFT
POLARIZATION
POTENTIALS
SCATTERING
TARGETS