Title

Upper limit for electron-positron decaying to neutral Lambda(baryon)-antineutral Lamba(baryon) cross section and R in the center-of-mass energy range from 11.230 to 11.382 GeV

Date of Award

2004

Degree Type

Dissertation

Degree Name

Doctor of Philosophy (PhD)

Department

Physics

Advisor(s)

Sheldon Stone

Keywords

Electron-positron, Hadron, Cross section, Lambdab

Subject Categories

Physical Sciences and Mathematics | Physics

Abstract

We have searched for [Special characters omitted.] resonance production using data taking by CLEO III detector and set an upper limit for such a cross section to be on the order of 0.05-0.10 units of R in 95% confidence level in the scanning range at Center Mass of Energies from 11.230 to 11.382 GeV. The measurement of R = σ( e + e - [arrow right] hadrons)/σ( e + e - [arrow right] μ + μ - ) has been made in this scan range as well. The measured R value near Λ b threshold is R = 4.01 ± 0.15

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