/ 01 05 27 6 v 1 2 6 M ay 2 00 1 TRANSVERSE RESUMMATION FOR DIRECT PHOTON PRODUCTION

05 22 6 v 1 2 3 M ay 2 00 0 Report of the Working Group on Photon and Weak Boson Production

This report discusses physics issues which can be addressed in photon and weak boson production in Run II at the Tevatron. The current understanding and the potential of Run II to expand our knowledge of direct photon production in hadronic collisions is discussed. We explore the prospects for using the W-boson cross section to measure the integrated luminosity, improving the measurement of the...

x / 04 05 01 6 v 1 1 2 M ay 2 00 4 Heavy meson production at a low - energy photon collider . Stephen Asztalos

A low-energy γγ collider has been discussed in the context of a testbed for a γγ interaction region at the Next Linear Collider (NLC). We consider the production of heavy mesons at such a testbed using Compton-backscattered photons and demonstrate that their production rivals or exceeds those by BELLE, BABAR or LEP where they are produced indirectly via virtual γγ luminosities.

x / 02 05 02 6 v 1 1 3 M ay 2 00 2 PROMPT PHOTONS AND DEEPLY VIRTUAL COMPTON SCATTERING AT HERA

Two results in ep physics using HERA data are discussed: a measurement of the effective transverse parton momentum in the proton by studying the production of prompt-photons in photoproduction events in the ZEUS collaboration and differential cross sections for Deeply Virtual Compton Scattering obtained by both the H1 and ZEUS collaborations.

ar X iv : h ep - p h / 02 05 01 6 v 1 2 M ay 2 00 2 Scalar a 0 ( 980 ) meson in φ → π 0 ηγ decay

ar X iv : h ep - p h / 01 05 27 3 v 1 2 5 M ay 2 00 1 Production of the D - wave bb̄ states 1

The first and second families of D-wave bb̄ quarkonium states are expected to have masses near 10.16 and 10.44 GeV/c. The accuracy of these predictions is discussed, and the prospects of two methods for producing these states in electron-positron collisions are updated. Direct scans in the ee center-of-mass can give rise to the D1 states. The 1 DJ states have also been searched for in the electr...