X(3872) diagnostics with decays to D {\bar D} γ

Details X(3872) diagnostics with decays to D {\bar D} γ X(3872) diagnostics with decays to D {\bar D} γ

2005-09-19

arxiv.org/abs/hep-ph/0509192v2

Int.J.Mod.Phys.A21:1239-1250,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 2 figures, references updated

Scientific paper

10.1142/S0217751X06029041

It is pointed out that in the decays $X(3872) \to D {\bar D} \gamma$ the possible `molecular' component of the X(3872) should give rise essentially only to a $D^0 {\bar D}^0 \gamma$ final state with a predictable spectrum, and should yield virtually no contribution to decays into $D^+D^- \gamma$. The latter final state with charged $D$ mesons should however arise from the radiative decays of the short-distance core of the X(3872) through the transition $X(3872) \to \psi(3770) \gamma$. Thus an observation of the radiative decays of X(3872) to pairs of neutral and charged $D$ mesons would provide an insight into the internal dynamics of the X(3872) resonance.

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