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Indications of a Four-Quark Structure for the X ( 3872 ) and X ( 3876 ) Particles from Recent Belle and BABAR Data

2007; American Physical Society; Volume: 99; Issue: 18 Linguagem: Inglês

10.1103/physrevlett.99.182003

ISSN

1092-0145

Autores

L. Maiani, A. D. Polosa, V. Riquer,

Tópico(s)

High-Energy Particle Collisions Research

Resumo

Recent results by Belle and BABAR point to the existence of a second X particle decaying in D(0)D(0)pi(0), a few MeV above the X(3872). We identify the two X states with the neutral particles predicted by the four-quark model and show that production and decays are consistent with this assignment. We consider the yet-to-be-observed charged partners and give new hints on how to look for them.

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