New Two-Loop Contribution to Electric Dipole Moments in Supersymmetric Theories
- 1. NCTS and Physics Department, National Tsing-Hua University, Hsinchu 30043, Taiwan, Republic of (China)
- 2. Fermilab, P.O. Box 500, Batavia , Illinois 60510 (United States)
- 3. Physics Department, University of Illinois at Chicago, Chicago, Illinois 60607-7059 (United States)
- 4. Theory Division, CERN, CH-1211 Geneva 23 (Switzerland)
Description
We calculate a new type of two-loop contribution to the electric dipole moments of the electron and neutron in supersymmetric theories. The new contributions are originated from the potential CP violation in the trilinear couplings of the Higgs bosons to the scalar-top or the scalar-bottom quarks. These couplings did not receive stringent constraints directly. The electric dipole moments are induced through a mechanism analogous to that due to Barr and Zee [Phys.thinspthinspRev.thinspthinspLett.thinspthinsp65, 21 (1990)]. We find observable effects for a sizable portion of the parameter space related to the third generation scalar quarks in the minimal supersymmetric standard model which cannot be excluded by earlier considerations. copyright 1999 The American Physical Society
Additional details
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 82
- Journal Issue
- 5
- Journal Page Range
- p. 900-903
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 30021519
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- CP INVARIANCE; DIPOLE MOMENTS; ELECTRIC MOMENTS; ELECTRONS; HIGGS BOSONS; NEUTRONS; QUARKS; STANDARD MODEL; SUPERSYMMETRY
- Descriptors DEC
- BARYONS; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; GRAND UNIFIED THEORY; HADRONS; INVARIANCE PRINCIPLES; LEPTONS; MATHEMATICAL MODELS; NUCLEONS; PARTICLE MODELS; POSTULATED PARTICLES; QUANTUM FIELD THEORY; SYMMETRY; UNIFIED GAUGE MODELS