scholarly journals A4-based neutrino masses with Majoron decaying dark matter

2010 ◽  
Vol 82 (7) ◽  
Author(s):  
J. N. Esteves ◽  
F. R. Joaquim ◽  
A. S. Joshipura ◽  
J. C. Romão ◽  
M. A. Tórtola ◽  
...  
Keyword(s):  
Dark Matter ◽  
Neutrino Masses ◽  
Decaying Dark Matter

scholarly journals Neutrino masses, leptogenesis and decaying dark matter

2009 ◽  
Vol 2009 (10) ◽  
pp. 001-001 ◽  
Author(s):  
Chuan-Hung Chen ◽  
Chao-Qiang Geng ◽  
Dmitry V Zhuridov
Keyword(s):  
Dark Matter ◽  
Neutrino Masses ◽  
Decaying Dark Matter

scholarly journals Dark matter candidates in a type-II radiative neutrino mass model

2021 ◽  
Vol 2021 (6) ◽  
Author(s):  
Roberto A. Lineros ◽  
Mathias Pierre
Keyword(s):  
Dark Matter ◽  
Neutral Particle ◽  
Matter Density ◽  
Indirect Detection ◽  
Dark Matter Candidate ◽  
Neutrino Masses ◽  
Type Ii ◽  
Mass Model ◽  
Direct And Indirect Detection

Abstract We explore the connection between Dark Matter and neutrinos in a model inspired by radiative Type-II seessaw and scotogenic scenarios. In our model, we introduce new electroweakly charged states (scalars and a vector-like fermion) and impose a discrete ℤ2 symmetry. Neutrino masses are generated at the loop level and the lightest ℤ2-odd neutral particle is stable and it can play the role of a Dark Matter candidate. We perform a numerical analysis of the model showing that neutrino masses and flavour structure can be reproduced in addition to the correct dark matter density, with viable DM masses from 700 GeV to 30 TeV. We explore direct and indirect detection signatures and show interesting detection prospects by CTA, Darwin and KM3Net and highlight the complementarity between these observables.

scholarly journals Deep Search for Decaying Dark Matter with XMM-Newton Blank-Sky Observations

2021 ◽  
Vol 127 (5) ◽  
Author(s):  
Joshua W. Foster ◽  
Marius Kongsore ◽  
Christopher Dessert ◽  
Yujin Park ◽  
Nicholas L. Rodd ◽  
...  
Keyword(s):  
Dark Matter ◽  
Decaying Dark Matter

scholarly journals Minimal scoto-seesaw mechanism with spontaneous CP violation

2021 ◽  
Vol 2021 (4) ◽  
Author(s):  
D. M. Barreiros ◽  
F. R. Joaquim ◽  
R. Srivastava ◽  
J. W. F. Valle
Keyword(s):  
Dark Matter ◽  
Cp Violation ◽  
Vacuum Expectation ◽  
Vacuum Expectation Value ◽  
Discrete Symmetry ◽  
Double Beta Decay ◽  
Neutrino Masses ◽  
Seesaw Mechanism ◽  
Cosmological Observations ◽  
Scalar Singlet

Abstract We propose simple scoto-seesaw models to account for dark matter and neutrino masses with spontaneous CP violation. This is achieved with a single horizontal $$ {\mathcal{Z}}_8 $$ Z 8 discrete symmetry, broken to a residual $$ {\mathcal{Z}}_2 $$ Z 2 subgroup responsible for stabilizing dark matter. CP is broken spontaneously via the complex vacuum expectation value of a scalar singlet, inducing leptonic CP-violating effects. We find that the imposed $$ {\mathcal{Z}}_8 $$ Z 8 symmetry pushes the values of the Dirac CP phase and the lightest neutrino mass to ranges already probed by ongoing experiments, so that normal-ordered neutrino masses can be cornered by cosmological observations and neutrinoless double beta decay experiments.

scholarly journals THE DARK-MATTER WORLD: ARE THERE DARK-MATTER GALAXIES?

2012 ◽  
Vol 10 ◽  
pp. 1-12
Author(s):  
W-Y. PAUCHY HWANG
Keyword(s):  
Dark Matter ◽  
Time Span ◽  
Neutrino Masses ◽  
Ordinary Matter ◽  
Cosmic Neutrino Background ◽  
Cosmic Neutrino ◽  
Neutrino Background

We attempt to answer whether neutrinos and antineutrinos, such as those in the cosmic neutrino background, would clusterize among themselves or even with other dark-matter particles, under certain time span, say 1 Gyr. With neutrino masses in place, the similarity with the ordinary matter increases and so is our confidence for neutrino clustering if time is long enough. In particular, the clusterings could happen with some seeds (cf. see the text for definition), the chance in the dark-matter world to form dark-matter galaxies increases. If the dark-matter galaxies would exist in a time span of 1 Gyr, then they might even dictate the formation of the ordinary galaxies (i.e. the dark-matter galaxies get formed first); thus, the implications for the structure of our Universe would be tremendous.

scholarly journals Unifying Inflation and Dark Matter with Neutrino Masses

2007 ◽  
Vol 99 (26) ◽  
Author(s):  
Rouzbeh Allahverdi ◽  
Bhaskar Dutta ◽  
Anupam Mazumdar
Keyword(s):  
Dark Matter ◽  
Neutrino Masses

Decaying Dark Matter and the Deficit of Dwarf Halos

2009 ◽  
Author(s):  
Majd Abdelqader ◽  
Fulvio Melia ◽  
Shaaban Khalil
Keyword(s):  
Dark Matter ◽  
Decaying Dark Matter

scholarly journals Freeze-in production of decaying dark matter in five steps

2018 ◽  
Vol 2018 (11) ◽  
pp. 048-048 ◽  
Author(s):  
Saniya Heeba ◽  
Felix Kahlhoefer ◽  
Patrick Stöcker
Keyword(s):  
Dark Matter ◽  
Decaying Dark Matter
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