{ital f}{sub 0}(1370) and {ital f}{sub 0}(1520) resonances found in {bar {ital N}}{ital N} annihilation at rest

Journal Article · Mon Apr 01 04:00:00 EST 1996 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.53.3559· OSTI ID:279825

Achasov, N N; Shestakov, G N ^[1]

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1. Laboratory of Theoretical Physics, S.L. Sobolev Institute for Mathematics, 630090, Novosibirsk 90 (Russia)

It is shown that (i) to describe the (4{pi}){sup 0} mass spectra in {bar {ital N}}{ital N}{r_arrow}(4{pi}){sup 0}{pi} at rest by an {ital f}{sub 0} resonance with an energy-dependent total width, the mass of the resonance cannot equal 1370 MeV but has to lie above 1500 MeV, (ii) the shape of these mass spectra is only weakly sensitive to the value of the {ital f}{sub 0} resonance mass if this is high, and (iii) they also readily tolerate a nonresonant interpretation. A possible relation between a heavy {ital f}{sub 0} resonance dominating the 4{pi} channel and the {ital f}{sub 0}(1520) state observed in the reactions {bar {ital N}}{ital N}{r_arrow}3{pi} and {bar {ital N}}{ital N}{r_arrow}2{eta}{pi} is pointed out. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 279825
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 7 Vol. 53; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANNIHILATION
ENERGY DEPENDENCE
F0-1300 MESONS
F0-1590 MESONS
MASS SPECTRA
NUCLEON-ANTINUCLEON INTERACTIONS
PIONS
RESONANCE
WIDTH