Isospin and a possible interpretation of the newly observed X(1576)

Journal Article · Wed Nov 01 00:00:00 EST 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.74.097503· OSTI ID:20873180

Fengkun, Guo ^[1]; Pengnian, Shen ^[2]

---

1. Institute of High Energy Physics, Chinese Academy of Sciences, P.O. Box 918(4), Beijing 100049 (China)
2. CCAST (World Laboratory), P.O. Box 8730, Beijing 100080 (China)

Recently, the BES Collaboration observed a broad resonant structure X(1576) with a large width being around 800 MeV and assigned its J{sup PC} number to 1{sup --}. We show that the isospin of this resonant structure should be assigned to 1. This state might be a molecule state or a tetraquark state. We study the consequences of a possible K*(892)-{kappa} molecular interpretation. In this scenario, the broad width can easily be understood. Carefully searching this resonant structure in the J/{psi}{yields}{pi}{sup +}{pi}{sup -}{pi}{sup 0} and J/{psi}{yields}K{sup +}K{sup -}{pi}{sup +}{pi}{sup -}{pi}{sup 0} decays should be important for understanding the structure of X(1567)

• OSTI ID: 20873180
• Journal Information: Physical Review. D, Particles Fields, Vol. 74, Issue 9; Other Information: DOI: 10.1103/PhysRevD.74.097503; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BEIJING ELECTRON-POSITRON COLLIDER
COLLIDING BEAMS
ELECTRON-POSITRON INTERACTIONS
ISOSPIN
J PSI-3097 MESONS
K*-892 MESONS
KAONS MINUS
KAONS PLUS
MEV RANGE
MULTIPARTICLE SPECTROMETERS
PARTICLE DECAY
PARTICLE WIDTHS
PIONS MINUS
PIONS NEUTRAL
PIONS PLUS