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 $\Gamma (X\to e^{+}{e}^{-})$ is found to be $\gtrsim$0.03 eV. The same approach applied to the ${\chi }_{c1}$ 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.

Comments: LaTeX2e, 11 pages, 1 figure, version published in Phys.Lett.B