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

Title: Renormalization group study of the minimal Majoronic dark radiation and dark matter model

Abstract

We study the 1-loop renormalization group equation running in the simplest singlet Majoron model constructed by us earlier to accommodate the dark radiation and dark matter content in the universe. A comprehensive numerical study was performed to explore the whole model parameter space. A smaller effective number of neutrinos △N{sub eff}∼0.05, or a Majoron decoupling temperature higher than the charm quark mass, is preferred. We found that a heavy scalar dark matter, ρ, of mass 1.5–4 TeV is required by the stability of the scalar potential and an operational type-I see-saw mechanism for neutrino masses. A neutral scalar, S, of mass in the 10–100 GeV range and its mixing with the standard model Higgs as large as 0.1 is also predicted. The dominant decay modes are S into bb-bar and/or ωω. A sensitive search will come from rare Z decays via the chain Z→S+ff-bar, where f is a Standard Model fermion, followed by S into a pair of Majoron and/or b-quarks. The interesting consequences of dark matter bound state due to the sizable Sρρ-coupling are discussed as well. In particular, shower-like events with an apparent neutrino energy at M{sub ρ} could contribute to the observed effective neutrino flux in undergroundmore » neutrino detectors such as IceCube.« less

Authors:
 [1];  [2]
  1. Department of Physics, National Tsing Hua University,101, Sec. 2, KuangFu Rd., Hsinchu 300, Taiwan (China)
  2. Theory Group, TRIUMF,4004 Wesbrook Mall, Vancouver BC V6T 2A3 (Canada)
Publication Date:
Sponsoring Org.:
SCOAP3, CERN, Geneva (Switzerland)
OSTI Identifier:
22572118
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2016; Journal Issue: 07; Other Information: PUBLISHER-ID: JCAP07(2016)027; OAI: oai:repo.scoap3.org:16477; cc-by Article funded by SCOAP3. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BOUND STATE; C QUARKS; DECOUPLING; GEV RANGE 01-10; GEV RANGE 10-100; HIGGS BOSONS; MAJORONS; MATHEMATICAL OPERATORS; NEUTRINO MIXING ANGLE; NONLUMINOUS MATTER; NUMERICAL ANALYSIS; PARTICLE DECAY; RENORMALIZATION; REST MASS; SCALAR MESONS; STANDARD MODEL; TEV RANGE 01-10; Z NEUTRAL BOSONS

Citation Formats

Chang, We-Fu, and Ng, John N. Renormalization group study of the minimal Majoronic dark radiation and dark matter model. United States: N. p., 2016. Web. doi:10.1088/1475-7516/2016/07/027.
Chang, We-Fu, & Ng, John N. Renormalization group study of the minimal Majoronic dark radiation and dark matter model. United States. doi:10.1088/1475-7516/2016/07/027.
Chang, We-Fu, and Ng, John N. Mon . "Renormalization group study of the minimal Majoronic dark radiation and dark matter model". United States. doi:10.1088/1475-7516/2016/07/027.
@article{osti_22572118,
title = {Renormalization group study of the minimal Majoronic dark radiation and dark matter model},
author = {Chang, We-Fu and Ng, John N.},
abstractNote = {We study the 1-loop renormalization group equation running in the simplest singlet Majoron model constructed by us earlier to accommodate the dark radiation and dark matter content in the universe. A comprehensive numerical study was performed to explore the whole model parameter space. A smaller effective number of neutrinos △N{sub eff}∼0.05, or a Majoron decoupling temperature higher than the charm quark mass, is preferred. We found that a heavy scalar dark matter, ρ, of mass 1.5–4 TeV is required by the stability of the scalar potential and an operational type-I see-saw mechanism for neutrino masses. A neutral scalar, S, of mass in the 10–100 GeV range and its mixing with the standard model Higgs as large as 0.1 is also predicted. The dominant decay modes are S into bb-bar and/or ωω. A sensitive search will come from rare Z decays via the chain Z→S+ff-bar, where f is a Standard Model fermion, followed by S into a pair of Majoron and/or b-quarks. The interesting consequences of dark matter bound state due to the sizable Sρρ-coupling are discussed as well. In particular, shower-like events with an apparent neutrino energy at M{sub ρ} could contribute to the observed effective neutrino flux in underground neutrino detectors such as IceCube.},
doi = {10.1088/1475-7516/2016/07/027},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 07,
volume = 2016,
place = {United States},
year = {Mon Jul 18 00:00:00 EDT 2016},
month = {Mon Jul 18 00:00:00 EDT 2016}
}