A Solution to the Strong {CP} Problem in Superstring Models

Casas, J.A.; Ross, Graham G.

doi:10.1016/0370-2693(87)91152-X

A Solution to the Strong {CP} Problem in Superstring Models

J.A. Casas
(
- Oxford U.
)
,
Graham G. Ross
(
- Oxford U.
)

May 12, 1987

6 pages

Published in:

Phys.Lett.B 192 (1987) 119-124

Published: 1987

DOI:

10.1016/0370-2693(87)91152-X

Report number:

Print-87-0400 (OXFORD)

View in:

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Abstract: (Elsevier)

We show how superstring models with simple discrete symmetries may have an approximate Peccei-Quinn symmetry in the low-energy effective lagrangian. The breaking of this symmetry is very small and as a consequence in models with intermediate scale breaking the strong CP violation is reduced to an acceptable level. The resultant “pseudo-axion” has properties indistinguishable from the usual “invisible axion” and the scale of its coupling lies naturally in the acceptable range 10 8 –10 12 GeV.

MODEL: STRING
SUPERSYMMETRY: MULTIPLET
MULTIPLET: SUPERSYMMETRY
GRAND UNIFIED THEORY: E(6)
SYMMETRY BREAKING
CP: violation
POSTULATED PARTICLE: AXION
SYMMETRY: DISCRETE
POTENTIAL: HIGGS
GROUP THEORY: REPRESENTATION

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Figures(0)

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