skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Constraining A 4 leptonic flavour model parameters at colliders and beyond

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$$\left(\mu\to e\gamma\right)$$ and the reinterpretation of an 8 TeV ATLAS search for anomalous productions of multi-leptonic final states. We quantify the exclusionary power of each of these experiments and identify regions where the constraints from collider and MEG experimental data are complementary.

Authors:
 [1];  [2]; ORCiD logo [3]; ORCiD logo [4]
  1. New York Univ., New York, NY (United States)
  2. Univ. of Cincinnati, Cincinnati, OH (United States)
  3. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  4. Univ. of Southampton, Southampton (United Kingdom)
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1487403
Report Number(s):
arXiv:1810.05648; FERMILAB-PUB-18-548-CD-T; NSF ACI-1450310; PHY-1505463
Journal ID: ISSN 1029-8479; 1698425
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Volume: 2019; Journal Issue: 4; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Phenomenological Models

Citation Formats

Heinrich, Lukas, Schulz, Holger, Turner, Jessica, and Zhou, Ye -Ling. Constraining A4 leptonic flavour model parameters at colliders and beyond. United States: N. p., 2019. Web. doi:10.1007/JHEP04(2019)144.
Heinrich, Lukas, Schulz, Holger, Turner, Jessica, & Zhou, Ye -Ling. Constraining A4 leptonic flavour model parameters at colliders and beyond. United States. https://doi.org/10.1007/JHEP04(2019)144
Heinrich, Lukas, Schulz, Holger, Turner, Jessica, and Zhou, Ye -Ling. Wed . "Constraining A4 leptonic flavour model parameters at colliders and beyond". United States. https://doi.org/10.1007/JHEP04(2019)144. https://www.osti.gov/servlets/purl/1487403.
@article{osti_1487403,
title = {Constraining A4 leptonic flavour model parameters at colliders and beyond},
author = {Heinrich, Lukas and Schulz, Holger and Turner, Jessica and Zhou, Ye -Ling},
abstractNote = {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$\left(\mu\to e\gamma\right)$ and the reinterpretation of an 8 TeV ATLAS search for anomalous productions of multi-leptonic final states. We quantify the exclusionary power of each of these experiments and identify regions where the constraints from collider and MEG experimental data are complementary.},
doi = {10.1007/JHEP04(2019)144},
url = {https://www.osti.gov/biblio/1487403}, journal = {Journal of High Energy Physics (Online)},
issn = {1029-8479},
number = 4,
volume = 2019,
place = {United States},
year = {2019},
month = {4}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

Figures / Tables:

Figure 1 Figure 1: The tetrahedral group A 4 as the full flavour symmetry and its subgroups T = Z 3 and S = Z 2 as residual symmetries in the charged lepton and neutrino sectors, respectively.

Save / Share:

Works referenced in this record:

Hunting the flavon
journal, September 2016


Simplest neutrino mixing from S 4 symmetry
journal, April 2013


Emergence of the electroweak scale through the Higgs portal
journal, April 2013


The golden ratio prediction for the solar angle from a natural model with A 5 flavour symmetry
journal, March 2011


Phenomenology of flavon fields at the LHC
journal, February 2010


Quark and lepton flavor triality
journal, August 2010


Fermionic dark matter with pseudo-scalar Yukawa interaction
journal, January 2015


Rivet user manual
journal, December 2013


Comix, a new matrix element generator
journal, December 2008


Neutrino mixing and masses from a minimum principle
journal, November 2013


Neutrino physics with JUNO
journal, February 2016


A second Higgs from the Higgs portal
journal, May 2015


Higgs Bosons from Two-Gluon Annihilation in Proton-Proton Collisions
journal, March 1978


Determining Horizontal Symmetry from Neutrino Mixing
journal, September 2008


The role of flavon cross couplings in leptonic flavour mixing
journal, June 2016


A call for new physics: The muon anomalous magnetic moment and lepton flavor violation
journal, February 2018


Flavon-induced connections between lepton flavour mixing and charged lepton flavour violation processes
journal, October 2016


Collider constraints and prospects of a scalar singlet extension to Higgs portal dark matter
journal, July 2016


New physics contributions to the muon anomalous magnetic moment: A numerical code
journal, May 2014


Extending the Higgs sector: an extra singlet
journal, January 2016


Updated fit to three neutrino mixing: exploring the accelerator-reactor complementarity
journal, January 2017


Discrete flavor symmetries and models of neutrino mixing
journal, September 2010