Dilepton Signatures of Family Non-Universal U(1)'
arXiv:hep-ph/0703269 · doi:10.1016/j.physletb.2007.03.049
Abstract
The supersymmetric models extending the minimal supersymmetric standard model (MSSM) by an additional Abelian gauge factor U(1)' in order to solve the mu problem do generically suffer from anomalies disrupting the gauge coupling unification found in the MSSM. The anomalies are absent if the minimal matter content necessitated by the mu problem is augmented with exotic matter species having appropriate quantum numbers. Recently, it has been shown that anomaly cancellation can also be accomplished by introducing family non-universal U(1)' charges and non-holomoprhic soft-breaking terms. We discuss collider signatures of anomaly-free family non-universal U(1)' model by analyzing dilepton production in future colliders. We find that, both at LHC and NLC, one can establish existence/absence of such a Z' boson by simply comparing the number of dilepton production events for electron, muon and tau lepton. The signal is free of the SM background.
arXiv comment12 pages, 4 figures
References in corpus (29)
- Strong Dynamics and Electroweak Symmetry Breaking
- Z-prime Gauge Bosons at the Tevatron
- Implications of Generalized Z-Z' Mixing
- Nonexotic Neutral Gauge Bosons
- Electroweak Breaking and the mu problem in Supergravity Models with an Additional U(1)
- Implications of Abelian Extended Gauge Structures From String Models
- Gauge Unification, Yukawa Hierarchy and the Problem
- New Gauge Bosons from String Models
- Indications for an Extra Neutral Gauge Boson in Electroweak Precision Data
- Radiative Symmetry Breaking in a Supersymmetric Model with an Extra
- Constraints on Extended Neutral Gauge Structures
- Electroweak Baryogenesis in a Supersymmetric U(1)' Model
- Z' Discovery Limits For Supersymmetric E_6 Models
- Chiral Models of Weak Scale Supersymmetry
- The minimal U(1)' extension of the MSSM
- Measurement of the High-Mass Drell-Yan Cross Section and Limits on Quark-Electron Compositeness Scales
- The Higgs Sector in a Extension of the MSSM
- Reconstruction of the Extended Gauge Structure from Observables at Future Colliders
- Determination of Gauge Couplings to Quarks and Leptons at Future Hadron Colliders
- CP Violation in Supersymmetric U(1)' Models
- Search for heavy particles decaying into electron-positron pairs in p-pbar collisions
- One-Loop Effects in Supergravity Models with an Additional U(1)
- Diagnostic Power of Future Colliders for Z'Couplings to Quarks and Leptons: e+e- versus pp Colliders
- Radiative Corrections to Higgs Masses in Models
- Remark on Z' limits at hadron colliders
- U(1) Models of Fermion Masses Without a Problem
- Constraints on leptophobic gauge bosons with polarized neutrons and protons at RHIC
- Electroweak Physics
- An NMSSM Without Domain Walls