Four quark interpretation of Y(4260)

Journal Article · Mon Aug 01 00:00:00 EDT 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.72.031502· OSTI ID:20711184

Maiani, L; Piccinini, F; Polosa, A D; Riquer, V ^[1]

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1. Universita di Roma 'La Sapienza' and I.N.F.N., Rome (Italy)

We propose that the Y(4260) particle recently announced by BABAR is the first orbital excitation of a diquark-antidiquark state ([cs][cs]). Using parameters recently determined to describe the X(3872) and X(3940) we show that the Y mass is compatible with the orbital excitation picture. A crucial prediction is that Y(4260) should decay predominantly in D{sub s}D{sub s}. The Y(4260) should also be seen in B nonleptonic decays in association with one kaon. We consider the full nonet of related four-quark states and their predicted properties. Finally, we comment on a possible narrow resonance in the same channel.

• OSTI ID: 20711184
• Journal Information: Physical Review. D, Particles Fields, Vol. 72, Issue 3; Other Information: DOI: 10.1103/PhysRevD.72.031502; (c) 2005 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
BAG MODEL
EXCITATION
HADRONIC PARTICLE DECAY
KAONS
PARTICLE IDENTIFICATION
QUARKS
RESONANCE PARTICLES
REST MASS
WEAK HADRONIC DECAY