Jet finding algorithms, as they are used in e + e − and hadron collisions, are reviewed and compared. It is suggested that a successive combination style algorithm, similar to that used in e + e − physics, might be useful also in hadron collisions, where cone style algorithms have been used previously.

No abstract

This report was prepared as an account of work sponsored by an agency of the United States ¢ Government. Neither the United States Government nor any agency thereof, nor any of their 4 employees, makes any warranty, express or implied, or assumes any legal liability or responsi-DOE/ER/4 0 2 2 4--2 4 3 bility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, DE 9 3 010.5 6 2 manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. Abstract;: :'.,,:, .,_! .. The study of intermittency in high-energy hadronic collisions by the MonteCarlo code ECCO is extended to 3-dimensional phase space. Strong intermittency is found in agreement with the data. Fluctuation in the impact parameter is responsible for the intermittency in lnpT, and the transversemomentum conservation leads to negative intermittency slopes in the azimuthal angle ¢. The Ochs-Wosiek plots are linear in all dimensions having universal slopes. An exponent u = 1.448 emerges to characterize multiparticle production in pp collisions. The properties of G moments are also examined, and the fractal dimensions determined.

We discuss virtual photon scattering in the region dominated by BFKL exchange, and report results for the cross sections at present and future e + e − colliders.

This report was prepared as an account of work sponsored by an agency of the United States ¢ Government. Neither the United States Government nor any agency thereof, nor any of their 4 employees, makes any warranty, express or implied, or assumes any legal liability or responsi-DOE/ER/4 0 2 2 4-2 4 3 bility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, DE 9 3 010.5 6 2 manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.