Topics in supersymmetry breaking

Thesis/Dissertation · Wed Jan 01 04:00:00 EST 1986

OSTI ID:7104117

Ahn, Y J

The author reviews briefly the breaking of global and local supersymmetry. He considers the left-right symmetric model in the spontaneously broken low energy supergravity. The phases of the A parameters, complex gaugino masses and the unitary matrices which diagnalize the fermion mass matrices are new sources of CP violation. He evaluates the contributions to the neutron electric dipole moment. Provided that the left-right symmetry breaking scale is higher than 1 TeV, the author finds the upper bound of it to be approx.10/sup -25/ e cm x (CP violating phases). This limit is comparable to the experimental to the experimental bound 6 x 10/sup -25/ e cm and CP violating phases in this model need not be unnaturally small. This is in contrast to the ease of the supersymmetric standard model where CP phases must be smaller than 10/sup -3/ in order not to violate the experimental bound. Next the author describes briefly the field theory limit of superstring theories starting from 10-dimensional supergravity. Then he considers the N = 1 supersymmetry breaking using Witten's truncated Lagrangian as a low energy model of E/sub 8/ x E/sub 8/' heterotic superstrings.

• Research Organization: Pennsylvania Univ., Philadelphia (USA)
• OSTI ID: 7104117
• Country of Publication: United States
• Language: English

Related Subjects

645300* -- High Energy Physics-- Particle Invariance Principles & Symmetries
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
COMPOSITE MODELS
CP INVARIANCE
DIPOLE MOMENTS
ELEMENTARY PARTICLES
EXTENDED PARTICLE MODEL
FERMIONS
HADRONS
INVARIANCE PRINCIPLES
MANY-DIMENSIONAL CALCULATIONS
MASS
MATHEMATICAL MODELS
MATRICES
NEUTRONS
NUCLEONS
PARTICLE MODELS
QUARK MODEL
STRING MODELS
SUPERSYMMETRY
SYMMETRY
SYMMETRY BREAKING