Implications of the Strange Spin of the Nucleon for the Neutron Electric Dipole Moment in Supersymmetric Theories
arXiv:hep-ph/9602211 · doi:10.1016/0370-2693(96)00312-7
Abstract
Supersymmetric model contributions to the neutron electric dipole moment arise via quark electric dipole moment operators, whose matrix elements are usually calculated using the Naive Quark Model (NQM). However, experiments indicate that the NQM does not describe well the quark contributions to the nucleon spin, and so may provide misleading estimates of electric dipole operator matrix elements. Taking the from experiment, we indeed find consistently smaller estimates of the neutron electric dipole moment for given values of the supersymmetric model parameters. This weakens previous constraints on CP violation in supersymmetric models, which we exemplify analytically in the case where the lightest supersymmetric particle (LSP) is a gaugino , and display numerically for other LSP candidates.
11 pages, uuencoded compressed postscript file including text and 3 figures
References in corpus (1)
Cited by in corpus (37)
- An Improved Experimental Limit on the Electric Dipole Moment of the Neutron
- QCD and strongly coupled gauge theories: challenges and perspectives
- Electric Dipole Moments of Nucleons, Nuclei, and Atoms: The Standard Model and Beyond
- Renormalization-Group-Improved Effective Potential for the MSSM Higgs Sector with Explicit CP Violation
- EDM Constraints in Supersymmetric Theories
- Electric Dipole Moments in the MSSM Reloaded
- CP-Violating MSSM Higgs Bosons in the Light of LEP 2
- MSSM Predictions for the Electric Dipole Moment of the Hg Atom
- Soft Yukawa couplings in supersymmetric theories
- Electron and Neutron Electric Dipole Moments in the Constrained MSSM
- CP Violation in Top Physics
- Constraints on Phases of Supersymmetric Flavour Conserving Couplings
- Neutron Electric Dipole Moment and Tensor Charges from Lattice QCD
- More on Electric Dipole Moment Constraints on Phases in the Constrained MSSM
- General Flavor Blind MSSM and CP Violation
- Dimension-5 CP-odd operators: QCD mixing and renormalization
- Constraints on supersymmetric soft phases from renormalization group relations
- Higgs-Higgsino-Gaugino Induced Two Loop Electric Dipole Moments
- Exploring the CP-violating NMSSM: EDM Constraints and Phenomenology
- Neutron-Electron EDM Correlations in Supersymmetry and Prospects for EDM Searches
- CP Violation In Single Top Production And Decay Via p p-bar -> t b-bar +X -> W^+ b b-bar +X Within The MSSM: A Possible Application For Measuring \arg(A_t) At Hadron Colliders
- New physics in CP violation experiments
- Electric dipole moments from Yukawa phases in supersymmetric theories
- Experimental constraint on quark electric dipole moments
- FCNC and CP Violation Observables in a SU(3)-flavoured MSSM
- Higgs Mediated EDMs in the Next-to-MSSM: An Application to Electroweak Baryogenesis
- CP violation in supersymmetric theories
- Reevaluating Bounds on Flavor-Changing Neutral Current Parameters in R-parity Conserving and R-parity Violating Supersymmetry from B0 - bar(B0) Mixing
- The limits on CP-odd four-fermion operators containing strange quark field
- Constraining beyond the Standard Model nucleon isovector charges
- Flavour and Collider Interplay for SUSY at LHC7
- Constrained MSSM and the electric dipole moment of the neutron
- Nucleon tensor form factors in a relativistic confined quark model
- Supersymmetric Baryogenesis from Exotic Quark Decays
- CP Violation in SUSY
- CP violation
- Light Gauginos - a Solution to More than the EDMs?