Emergent new symmetry from the Higgs shadow

Abstract

We show in this Letter how a new hidden gauge symmetry responsible for neutrino mass as well as dark matter (DM) in the Universe can be discovered through scalar mediators responsible for breaking the new symmetry. The new force mediator ($Z^{\prime }$) may be lighter than the Standard Model (SM) gauge bosons but cannot be observed in traditional searches for new gauge bosons. We highlight a novel way of discovering such a symmetry at the Large Hadron Collider (LHC) by incorporating an existing ATLAS analysis on four lepton final states which include the Higgs resonance. In addition, we show that the hidden sector also introduces flavor violation in the lepton sector which can become a significant channel of discovery for the new force.

8 pages, 4 figures, 4 tables

References in corpus (12)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• An Introduction to PYTHIA 8.2
• Dark Matter Search Results from the PandaX-4T Commissioning Run
• Robust Independent Validation of Experiment and Theory: Rivet version 3
• Constraining the Spin-Dependent WIMP-Nucleon Cross Sections with XENON1T
• Z'-mediated Supersymmetry Breaking
• Testing new physics models with global comparisons to collider measurements: the Contur toolkit
• Measurements of differential cross-sections in four-lepton events in 13 TeV proton-proton collisions with the ATLAS detector
• Electroweak phase transition in MSSM with $U(1{)}^{\prime }$ in explicit CP violation scenario
• Search for a light $Z^{\prime }$ at LHC in a neutrinophilic $U(1)$ model

Cited by in corpus (1)

• Indian Contributions to LHC Theory