Heavy quark spin selection rule and the properties of the X(3872)

Details Heavy quark spin selection rule and the properties of the X(3872) Heavy quark spin selection rule and the properties of the X(3872)

2004-08-27

arxiv.org/abs/hep-ph/0408321v2

Phys.Lett.B604:69-73,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages

Scientific paper

10.1016/j.physletb.2004.11.003

The properties of the resonance X(3872) are discussed under the assumption that this resonance is dominantly a `molecular' $J^{PC}=1^{++}$ state of neutral $D$ and $D^*$ mesons. It is argued that in these properties should dominate the states with the total spin of the charmed quark-antiquark pair equal to one. As a practical application of this observation the ratio of the rates of the decays $X \to \pi^0 \chi_{cJ}$ for different $J$ is predicted. It is also pointed out that the total rate of these decays is likely to be comparable to that of the observed transitions $X \to \pi^+ \pi^- J\psi$ and $X \to \pi^+ \pi^- \pi^0 J\psi$. The decays of the X into light hadrons and its production in hadronic processes are also briefly discussed.

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