2009/10/31 by Mu–Chun Chen, Mu-Chun Chen, Jinrui Huang · 15 citations
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Lepton #Lepton number #Neutrino #Neutrino Physics Research #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #hep-ph
paper · pdf · doi:10.1103/physrevd.81.055007
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 81(5) (American Physical Society) · 9 pages, 13 figures; v2: version to appear in Phys. Rev. D
arxiv created 2010/02/27 · openalex publication_date 2010/03/17 · arxiv updated 2010/04/29 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Small neutrino masses and their large mixing angles can be generated at the TeV scale by augmenting the standard model with an additional generation-dependent, anomaly-free U(1)_\ensuremathν symmetry, in the presence of three right-handed neutrinos. The Z^\ensuremath' gauge boson associated with the breaking of the U(1)_\ensuremathν symmetry can be produced at the LHC. The flavorful nature of the Z^\ensuremath' can be established by measuring its nonuniversal couplings to the charged leptons as determined by the lepton's U(1)_\ensuremathν charges, which also govern the neutrino flavor structure. While the LHC has the potential of discovering the Z^\ensuremath' up to M_Z^\ensuremath'=4.5 TeV with 100 fb^\ensuremath-1 data at the center of mass energy √(s)=14 TeV, to establish the flavorful nature of the Z^\ensuremath' requires much higher integrated luminosity. For our benchmark parameters that are consistent with neutrino oscillation data, at √(s)=14 TeV, a 5\ensuremathσ distinction between the dielectron and dimuon channels for M_Z^\ensuremath'=3 TeV requires 500 fb^\ensuremath-1 of data. We find that the forward backward asymmetry distributions can also be useful in distinguishing the dielectron and dimuon channels in the low invariant mass and transverse momentum regions.