Isospin effects in antinucleon-nucleon scattering and annihilation

Journal Article · Mon Apr 01 04:00:00 EST 1991 · Physical Review, C (Nuclear Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevC.43.1610· OSTI ID:5609040

Bydzovsky, P; Mach, R ^[1]; Nichitiu, F ^[2]

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1. Institute of Nuclear Physics, 25068 Rez, Czechoslovakia (RO)
2. Nuclear Research Institute, Bucharest, (Romania)

Isospin effects in {ital N{bar N}} scattering and annihilation are studied here using the optical model. Real part of the effective {ital N{bar N}} potential was chosen to be the {ital G}-parity-transformed Bonn {ital NN} potential (OBEPQ). Parameters of the imaginary part of the optical potential were obtained by fitting the total {ital p{bar p}}{r arrow}{ital p{bar p}}, {ital p{bar p}}{r arrow}{ital n{bar n}}, and {ital {bar n}p}{r arrow}{ital {bar n}p} cross sections to averaged experimental data represented here by analytical formulas. The model reproduces reasonably well the differential and total cross sections of {ital N{bar N}} scattering and charge-exchange reactions as well as the characteristics of {ital {bar p}} atoms. There is no evident relationship between the peculiar behavior of the real-to-imaginary ratio of the {ital p{bar p}} forward elastic scattering amplitude and isospin effects.

• OSTI ID: 5609040
• Journal Information: Physical Review, C (Nuclear Physics); (USA), Journal Name: Physical Review, C (Nuclear Physics); (USA) Vol. 43:4; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

645204* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
BARYON-BARYON INTERACTIONS
BASIC INTERACTIONS
CHARGE-EXCHANGE INTERACTIONS
COUPLED CHANNEL THEORY
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
ELECTROMAGNETIC INTERACTIONS
G PARITY
HADRON-HADRON INTERACTIONS
INTERACTIONS
ISOSPIN
NUCLEON-ANTINUCLEON INTERACTIONS
OPTICAL MODELS
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
STRONG INTERACTIONS
TOTAL CROSS SECTIONS