Measurement of theD*±cross section in two-photon processes

We have measured the inclusive ${\mathit{D}}^{\mathrm{*}\pm }$ production cross secton in a two-photon collision at the KEK ${\mathit{e}}^{+}$ ${\mathit{e}}^{\mathrm{-}}$ collider TRISTAN. The mean √s of the collider was 57.16 GeV and the integrated luminosity was 150 ${\mathrm{pb}}^{\mathrm{-}1}$. The differential cross section [dσ(${\mathit{D}}^{\mathrm{*}\pm }$)/${\mathit{dP}}_{\mathit{T}}$] was obtained in the ${\mathit{P}}_{\mathit{T}}$ range between 1.6 and 6.6 GeV and compared with theoretical predictions, such as those involving direct and resolved photon processes.