One-loop neutron electric dipole moment from supersymmetry without R parity

Y. Y. Keum, Otto C.W. Kong

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

We present a detailed analysis together with exact numerical calculations on one-loop contributions to the neutron electric dipole moment from supersymmetry without R parity, focusing on the gluino, chargino, and neutralino contributions. Apart from the neglected family mixing among quarks, complete formulas are given for the various contributions through the quark dipole operators, to which the present study is restricted. We discuss the structure and main features of the R-parity violating contributions and the interplay between the R-parity conserving and violating parameters. In particular, the parameter combination (Formula presented) under the optimal parametrization adopted, is shown to be solely responsible for the R-parity violating contributions in the supersymmetric loop diagrams. While (Formula presented) could bear a complex phase, the latter is not necessary to have a R-parity violating contribution.

Original languageEnglish
Pages (from-to)17
Number of pages1
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume63
Issue number11
DOIs
StatePublished - 2001

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