Direct X(3872) production in e+e− collisions

Abstract

Direct production of the charmonium-like state X(3872) in e+e− collisions is considered in the framework of the vector meson dominance model. An order-of-magnitude estimate for the width Γ(X→e+e−) is found to be ≳0.03 eV. The same approach applied to the χc1 charmonium decay predicts the corresponding width of the order 0.1 eV in agreement with earlier estimates. Experimental perspectives for the direct production of the 1++ charmonia in e+e− collisions are briefly discussed.

Keywords

• Exotic hadrons
• Charmonium