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Iowa State University

Elementary Particles and Fields and String Theory

1988

Articles 1 - 3 of 3

Full-Text Articles in Physics

Superstring-Inspired E6 Phenomenology , Joanne Lea Hewett Jan 1988

Superstring-Inspired E6 Phenomenology , Joanne Lea Hewett

Retrospective Theses and Dissertations

In this study, we examine the low energy phenomenological implications of superstring-inspired E6 models. The motivation for such models is reviewed. New particles, including new gauge bosons, exotic fermions, Higgs bosons, and their superpartners are expected to exist in models of this type. Techniques for producing these new particles directly at existing and planned colliders as well as searching for their indirect effects are examined. Other phenomenological implications of such models are also discussed.


Experimental Study Of Cham Quark Fragmentation , Sung Keun Park Jan 1988

Experimental Study Of Cham Quark Fragmentation , Sung Keun Park

Retrospective Theses and Dissertations

Charm quark fragmentation is studied in e[superscript]+ e[superscript]- annihilation at a center of mass energy of 29 GeV using the time-projection-chamber (TPC) detector at the SLAC storage ring PEP. The polarization of the D[superscript]* +, the energy dependency of the polarization, and the spin density matrix of D[superscript]* + are measured. In 147pb[superscript]-1 of data we see no evidence for polarization, alignment, or final state interaction in this fragmentation process;As a part of elementary particle detector improvement efforts a Radial Drift Chamber (RDC) has been built and studied. The RDC features the use of induced ...


Hamilton-Jacobi/Action-Angle-Variable Theory Of Scattering , Atulugamage Asiri Nanayakkara Jan 1988

Hamilton-Jacobi/Action-Angle-Variable Theory Of Scattering , Atulugamage Asiri Nanayakkara

Retrospective Theses and Dissertations

The classical and quantum action variable theory is extended to scattering by defining the action variable for the scattering region such that the new definition is consistent with the definition given earlier for the eigenstates. The forms of both the classical and the quantum action variables are maintained for both off-eigenstates and scattering states. The location of the turning points is studied in order to define the classical action variable and the location of the poles of the quantum momentum function is studied in order to define the quantum action variable. Two types of families of states are defined classically ...