The NN interaction in a constituent quark model: Baryonium states and protonium level shifts

Journal Article · Sat Apr 15 00:00:00 EDT 2006 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.73.045214· OSTI ID:20771493

Entem, D R; Fernandez, F ^[1]

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1. Grupo de Fisica Nuclear, IUFFyM, Universidad de Salamanca, E-37008 Salamanca (Spain)

We derive a NN interaction from a constituent quark model constrained by the NN sector to investigate the possible baryonium resonant state X(1835) recently suggested as a possible interpretation of the near-threshold enhancement found in J/{psi}{yields}{gamma}pp by the BES Collaboration. The interaction does not show bound or quasibound states but a {sup 3}P{sub 0} resonance in the I=0 isospin channel. We analyze the shift of the antiprotonium hydrogen energy levels, finding that pp-nn mixing can explain the abnormally big value of the 2{sup 3}P{sub 0} energy shift.

• OSTI ID: 20771493
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 73, Issue 4; Other Information: DOI: 10.1103/PhysRevC.73.045214; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYONIUM
ENERGY LEVELS
HYDROGEN
ISOSPIN
MIXING
NUCLEON-NUCLEON INTERACTIONS
PROTONIUM
QUARK MODEL
QUASIBOUND STATE
RESONANCE PARTICLES