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arXiv · 1502.03311

Determination of the structure of the $X(3872)$ in $\bar p A$ collisions

A. B. Larionov·M. Strikman·M. Bleicher
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Abstract

Currently, the structure of the $X(3872)$ meson is unknown. Different competing models of the $c\bar c$ exotic state $X(3872)$ exist, including the possibilities that this state is either a mesonic molecule with dominating $D^0 \bar D^{*0} +c.c.$ composition, a $c \bar c q \bar q$ tetraquark, or a $c \bar c$-gluon hybrid state. It is expected that the $X(3872)$ state is rather strongly coupled to the $\bar p p$ channel and, therefore, can be produced in $\bar p p$ and $\bar pA$ collisions at PANDA. We propose to test the hypothetical molecular structure of $X(3872)$ by studying the $D$ or $\bar D^{*}$ stripping reactions on a nuclear residue.

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A. B. Larionov, M. Strikman, M. Bleicher. 2015-08-24. Determination of the structure of the $X(3872)$ in $\bar p A$ collisions. https://doi.org/10.1016/j.physletb.2015.07.045

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