The inclusive cross section of charged hadrons in 3-jet events at. sqrt. s = 29 GeV

Abstract

We examine the cross section for the production of charged hadrons in 3-jet events produced from e + e~ annihilation at 29 GeV center of mass energy. The data was taken at the Pep-4/Time Projection Chamber between 1983-1984. In particular we are interested in the production of hadrons by the particle which mediates the strong interaction, the gluon. We find that the number of protons produced by the fragmentation of the gluon is at variance with the LUND model of fragmentation. This work is supported by the United States Department of Energy under Contract DE-AC03-76SF0009SLike Rome, large experiments are not built in a day. The Time Projection Chamber (TPC) is no exception. There were well over 100 physicists, engineers and technicians involved directly in the design, fabrication, testing, installation, and running of the detector. In addition, the Stanford Linear Accelerator Center provided the site and yet more manpower to build and run the electron-positron storage ring. I thank them all.But in particular, I have a large debt of gratitude to many people who directly helped me with this thesis. Werner Hofmann provided the inspiration for the analysis technique presented here. I also wish to thank him for the helpful comments on the jet analysis itself. Similarly, Gerry Lynch and Orin Dahl kindly shared with me their thoughts on data analysis. I am also grateful to Nick Hadley, Bernard Gabioud and Marjorie Shapiro who did the early work on the TPC's resolution. The time I spent with Owen Chamberlain, Ray Fuzesy, Dave Nygren and Peter Robrish is invaluable. They graciously laid a solid foundation for my knowledge of experimental hardware and ionization chambers. I would also like to thank Glen Cowen for the many physics conversations we had.Additionally, I was one of many fellow students and colleagues who partici pated in the "battle" of the electronics house. I wish to thank Bill Gary, Kevin