GLAS-PPE/97-12November 1997

Abstract:

Energy flow distributions from tagged $\gamma$$\gamma$ events generated with HERWIG are presented for E_beam = 45.6 GeV (LEP1) and E_beam = 175 GeV (top-quark threshold at a future e⁺e^- Linear Collider). They have very similar shapes regardless of the beam energy. Using the present knowledge of the LEP F₂^$\gamma$ analyses, it is forseen that the understanding of the hadronic response of the forward region of the LC detector is vital to the development of the final state models in $\gamma$$\gamma$ Monte Carlos. Such models are relied upon to extract F₂^$\gamma$ from the data, and hence understanding the forward region well may be crucial in the determination of whether or not a low-x rise exists in the photon structure function.