Kinetically-Enhanced Anomaly Mediation
arXiv:1109.1565 · doi:10.1007/JHEP12(2011)013
Abstract
We investigate a modification of anomaly-mediated supersymmetry breaking (AMSB) with an exotic U(1)_x gauge sector that can solve the tachyonic slepton problem of minimal AMSB scenarios. The new U(1)_x multiplet is assumed to couple directly to the source of supersymmetry breaking, but only indirectly to the minimal supersymmetric Standard Model (MSSM) through kinetic mixing with hypercharge. If the MSSM sector is also sequestered from the source of supersymmetry breaking, the contributions to the MSSM soft terms come from both AMSB and the U(1)_x kinetic coupling. We find that this arrangement can give rise to a flavour-universal, phenomenologically viable, and distinctive spectrum of MSSM superpartners. We also investigate the prospects for discovery and the most likely signatures of this scenario at the Large Hadron Collider (LHC).
29 pages, 10 figures; Added references, corrected ctau plot in Fig. 4, same general conclusions
References in corpus (13)
- PYTHIA 6.4 Physics and Manual
- Observation of an anomalous positron abundance in the cosmic radiation
- Dark Matter Results from 100 Live Days of XENON100 Data
- PAMELA results on the cosmic-ray antiproton flux from 60 MeV to 180 GeV in kinetic energy
- The Well-Tempered Neutralino
- Possible Signals of Wino LSP at the Large Hadron Collider
- PAMELA Satellite Data as a Signal of Non-Thermal Wino LSP Dark Matter
- Conformal Sequestering Simplified
- Sequestering in String Theory
- Hypercharged Anomaly Mediation
- Search for the Production of Scalar Bottom Quarks in ppbar collisions at sqrt(s) = 1.96 TeV
- Minimal Gaugomaly Mediation
- (Extra)Ordinary Gauge/Anomaly Mediation