Jet Production In Photon Photon Collisions At Pep PDF Download

We have used the TPC/Two-Gamma Facility at the SLAC ee− storage ring PEP to study the photon-photon reaction e+e− 2!e+e− + hadrons, in both the single-tagged mode (one outgoing e{sup {plus_minus}} detected) and the untagged mode (neither e{sup {plus_minus}} detected). A thrust algorithm was used to find the jet axis in the hadronic center-of-mass, and this axis was used to calculate the transverse momentum with respect to the [gamma][gamma] collision axis (p{sub t}). The (preliminary) p{sub t} and thrust distributions of both tagged and untagged data are well-described by the predictions of vector meson dominance (VDM) at low p{sub t}. For 3