Virtual Photon Structure Functions

We discuss the perturbatively calculable virtual photon structure functions. First we present the framework for analyzing the structure functions of the virtual photon and derive a first moment of $g_1^\gamma$ of the virtual photon. We then investigate the three positivity constraints satisfied by the eight structure functions of the virtual photon.Comment: 5 pages, LaTeX, 5 eps figures, npb.sty file included Talk given at RADCOR/Loops and Legs 2002, Kloster Banz, Germany, September 8-13, 2002, to appear in the Proceeding

Policy Decision by Election

本稿は経済政策の3つの異質な原理の意義と限界とを指摘し（第I節），それを克服する方法としてダウンズの理論を紹介し（第II節），かつ主としてシェップルに依拠しながら，ダウンズ理論の定式化を試みた（第III節）ものである