A search for single electron production in electron-positron annihilation at E = 29 GeV
This thesis presents experimental results from the ASP detector which took data on e{sup +}e{sup {minus}} interactions in the PEP storage ring at SLAC. Its design was particularly suitable for searching for production of supersymmetric particles. The motivations for and phenomenology of Supersymmetry are discussed. In particular, the production of a single supersymmetric electron ( selectron,' {tilde e}) in combination with a supersymmetric photon ( photino,' {tilde {gamma}}) would result in events in which a single electron and no other particles are observed in the detector at an e{sup +}e{sup {minus}} collider such as PEP, provided the masses of these particles are not too large. Such events would also result from the production of a single supersymmetric W-boson ( wino', {tilde W}) in combination with a supersymmetric neutrino ( sneutrino,' {tilde {nu}}). These process make it possible to search for selectrons and winos with masses greater than the beam energy. Observation of these unusual events would distinctly indicate the production of new particles. The ASP detector was designed to be hermetic and to provide efficient event reconstruction for low multiplicity events. The detector is described and its performance is evaluated; it is found to be well-suited to this study. No evidence for single-electron events was observed, allowing limits (95% CL) to be set on the supersymmetric particle masses.
- Research Organization:
- Stanford Univ., CA (United States)
- OSTI ID:
- 5261844
- Resource Relation:
- Other Information: Thesis (Ph.D.)
- Country of Publication:
- United States
- Language:
- English
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46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ELECTRON-POSITRON INTERACTIONS
ANNIHILATION
RADIATION DETECTORS
PERFORMANCE
SPARTICLES
PARTICLE PRODUCTION
DATA ANALYSIS
DETECTION
EXPERIMENTAL DATA
MASS
PARTICLE IDENTIFICATION
PEP STORAGE RINGS
PHOTONS
SUPERSYMMETRY
BASIC INTERACTIONS
BOSONS
DATA
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
INFORMATION
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
MASSLESS PARTICLES
MEASURING INSTRUMENTS
NUMERICAL DATA
PARTICLE INTERACTIONS
POSTULATED PARTICLES
STORAGE RINGS
SYMMETRY
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Conservation Laws
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