publication . Preprint . Article . 2019

Constraining A4 leptonic flavour model parameters at colliders and beyond

Lukas Heinrich; Holger Schulz; Jessica Turner; Ye-Ling Zhou;
Open Access English
  • Published: 01 Apr 2019
  • Country: United States
Abstract
The observed pattern of mixing in the neutrino sector may be explained by the presence of a non-Abelian, discrete flavour symmetry broken into residual subgroups at low energies. Many flavour models require the presence of Standard Model singlet scalars which can promptly decay to charged leptons in a flavour-violating manner. We constrain the model parameters of a generic $A_4$ leptonic flavour model using a synergy of experimental data including limits from charged lepton flavour conversion, an 8 TeV collider analysis and constraints from the anomalous magnetic moment of the muon. The most powerful constraints derive from the MEG collaborations' limit on Br$\l...
Subjects
arXiv: High Energy Physics::ExperimentHigh Energy Physics::Phenomenology
free text keywords: High Energy Physics - Phenomenology, Phenomenological Models, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798, Nuclear and High Energy Physics, Physics, Muon, Lepton, Collider, law.invention, law, Scalar (mathematics), Neutrino, Standard Model, Flavour, Particle physics, Anomalous magnetic dipole moment
Funded by
NSF| Collaborative Research: SI2-SSI: Data-Intensive Analysis for High Energy Physics (DIANA/HEP)
Project
  • Funder: National Science Foundation (NSF)
  • Project Code: 1450310
,
EC| ELUSIVES
Project
ELUSIVES
The Elusives Enterprise: Asymmetries of the Invisible Universe
  • Funder: European Commission (EC)
  • Project Code: 674896
  • Funding stream: H2020 | MSCA-ITN-ETN
,
EC| InvisiblesPlus
Project
InvisiblesPlus
InvisiblesPlus
  • Funder: European Commission (EC)
  • Project Code: 690575
  • Funding stream: H2020 | MSCA-RISE
,
NSF| Elementary Particle Physics with ATLAS
Project
  • Funder: National Science Foundation (NSF)
  • Project Code: 1505463
,
RCUK| Exploring the limits of the standard model and beyond
Project
  • Funder: Research Council UK (RCUK)
  • Project Code: ST/L000296/1
  • Funding stream: STFC
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