Photon 2003: a theorist's summary and outlook

Abstract

In this talk I present a summary of some of the discussions at the conference on various topics in Photon physics, selected with a view to give a theorist's perspective, of the current status and future prospects, of the developments in the field. After discussing some of the recent theoretical developments in the subject of Photon Structure function, I will focus on what the photon has helped us learn about the spin structure of a proton, aspects of perturbative and nonperturbative QCD as well as forward and diffractive physics. I will discuss the challenges that the data on heavy flavour production in the two photon reactions and in photo production, seem to have presented to the theorists. Then I discuss the direction in which photon physics is likely to go in future and what we {\em need} the photons to still tell us. I will end by talking about the newer developments in prospects for photon studies at future colliders and opportunities that these will provide us to learn about the physics beyond the Standard Model.

17 pages, LaTeX, uses espcrc2.sty, 12 figures, Summary talk presented by R.M. Godbole at PHOTON-2003, International Meeting on Structure and Interactions of the Photon, Frascati, Italy, April 7-11, 2003

Cited by in corpus (11)

• The Virtual Photon Structure to the Next-to-next-to-leading Order in QCD
• The $alphaalph{a}_s^2$ corrections to the first moment of the polarized virtual photon structure function $g_1^{g}amma(x,Q^2,P^2)$
• Target Mass Corrections for the Virtual Photon Structure Functions to the Next-to-next-to-leading Order in QCD
• Heavy quark effects on parton distribution functions in the unpolarized virtual photon up to the next-to-leading order in QCD
• Top quark effects on the virtual photon structure function at ILC
• Physics Possibilities at a Linear Collider
• Resummation of large logarithms in the heavy quark effects on the parton distributions inside the virtual photon
• Squark Contributions to Photon Structure Functions and Positivity Constraints
• Photon Structure Function in Supersymmetric QCD Revisited
• The real photon structure functions in massive parton model in NLO
• Parton distributions in the virtual photon target up to NNLO in QCD