First measurement of the Q^2 distribution of X(3915) single-tag two-photon production

We report the first measurement of the \(Q^2\) distribution of \(X(3915)\) produced by single-tag two-photon interactions. The decay mode used is \(X(3915) \rightarrow J/\psi\omega\). The covered \(Q^2\) region is from 1.5 (GeV/\(c\))\(^2\) to 10.0 (GeV/\(c\))\(^2\). We observe \(7.9\pm 3.1({\rm stat.})\pm 1.5({\rm syst.})\) events, where we expect \(4.1\pm 0.7\) events based on the \(Q^2=0\) result from the no-tag two-photon process, extrapolated to higher \(Q^2\) region using the \(c\bar{c}\) model of Schuler, Berends, and van Gulik. The shape of the distribution is also consistent with this model; we note that statistical uncertainties are large.