scholarly journals Weakly interacting massive particle dark matter and radiative neutrino mass from Peccei-Quinn symmetry

2014 ◽  
Vol 89 (4) ◽  
Author(s):  
Basudeb Dasgupta ◽  
Ernest Ma ◽  
Koji Tsumura
Keyword(s):  
Dark Matter ◽  
Neutrino Mass ◽  
Massive Particle ◽  
Weakly Interacting ◽  
Particle Dark Matter

scholarly journals WEAKLY INTERACTING MASSIVE PARTICLE DARK MATTER AND FIRST STARS: SUPPRESSION OF FRAGMENTATION IN PRIMORDIAL STAR FORMATION

2012 ◽  
Vol 761 (2) ◽  
pp. 154 ◽  
Author(s):  
Rowan J. Smith ◽  
Fabio Iocco ◽  
Simon C. O. Glover ◽  
Dominik R. G. Schleicher ◽  
Ralf S. Klessen ◽  
...  
Keyword(s):  
Dark Matter ◽  
Star Formation ◽  
Massive Particle ◽  
First Stars ◽  
Weakly Interacting ◽  
Particle Dark Matter

NEUTRINO MASS AND COLD DARK MATTER PARTICLES IN BIG-BANG NUCLEOSYNTHESIS

2008 ◽  
Vol 23 (27n30) ◽  
pp. 2427-2442 ◽  
Author(s):  
TOSHITAKA KAJINO ◽  
MOTOHIKO KUSAKABE ◽  
KAZUHIKO KOJIMA ◽  
TAKASHI YOSHIDA ◽  
DAI G. YAMAZAKI ◽  
...  
Keyword(s):  
Dark Matter ◽  
Neutrino Mass ◽  
Critical Role ◽  
Massive Particle ◽  
Light Element ◽  
Dark Matter Particle ◽  
Big Bang ◽  
Particle Model ◽  
Mass Hierarchy ◽  
Big Bang Nucleosynthesis

Neutrino is a tiny weakly interacting massive particle, but it has strong impacts on various cosmological and astrophysical phenomena. Neutrinos play a critical role in nucleosynthesis of light-to-heavy mass elements in core-collapse supernovae. The light element synthesis is particularly affected by neutrino oscillation (MSW) effect through the ν-process. We propose first that precise determination of sin 2 2θ13 and mass hierarchy can be made by a theoretical study of the observed 7 Li /11 B ratio in stars and presolar grains which are produced from SN ejecta. Theoretical sensitivity in our proposed method is shown to be superior to ongoing long-baseline neutrino experiments for the parameter region 10−4 ≤ sin22θ13 ≤ 10−2. We secondly discuss how to constrain the neutrino mass Σmν from precise analysis of cosmic microwave background anisotropies in the presence of primordial magnetic field. We obtain an upper limit Σmν < 1.3 eV (2σ). Thirdly, we discuss decaying dark-matter particle model in order to solve the primordial lithium problems that the standard Big-Bang nucleosynthesis theory predicts extremely different 6 Li and 7 Li abundances from observations.

scholarly journals Dark matter candidate with well-defined mass and couplings

2017 ◽  
Vol 32 (25) ◽  
pp. 1730022 ◽  
Author(s):  
Roland E. Allen ◽  
Aritra Saha
Keyword(s):  
Dark Matter ◽  
Z Bosons ◽  
Massive Particle ◽  
Dark Matter Candidate ◽  
Weakly Interacting

We propose a Higgs-related but spin-[Formula: see text] dark matter candidate with a mass that is comparable to that of the Higgs. This particle is a weakly interacting massive particle (WIMP) with an R-parity of [Formula: see text], but it can be distinguished from a neutralino by its unconventional couplings to W and Z bosons. Other neutral and charged spin-[Formula: see text] particles of a new kind are also predicted at higher energy.

scholarly journals UV complete framework of freeze-in massive particle dark matter

2019 ◽  
Vol 99 (1) ◽  
Author(s):  
Anirban Biswas ◽  
Debasish Borah ◽  
Arnab Dasgupta
Keyword(s):  
Dark Matter ◽  
Massive Particle ◽  
Particle Dark Matter ◽  
Complete Framework

scholarly journals Experimental Progress in the Direct Detection of Dark Matter

2005 ◽  
Vol 13 ◽  
pp. 38-41
Author(s):  
Nigel J.T. Smith
Keyword(s):  
Dark Matter ◽  
Direct Detection ◽  
Massive Particle ◽  
Experimental Techniques ◽  
Current Status ◽  
Weakly Interacting ◽  
The Galaxy ◽  
Experimental Approaches

AbstractSeveral experimental approaches are being utilised for the direct detection of the hypothetical weakly interacting massive particle which may constitute the majority of the non-luminous component of the Galaxy. These experimental techniques exploit the coherent recoil of target nuclei during an interaction and include thermal, ionisation, scintillation and tracking detectors. The challenges associated with this detection, the techniques employed and the current status of these searches are reviewed.

scholarly journals Small Scale Isocurvature Perturbation of Weakly Interacting Massive Particle

2016 ◽  
Vol 43 ◽  
pp. 1660202
Author(s):  
Ki-Young Choi ◽  
Jinn-Ouk Gong ◽  
Chang Sub Shin
Keyword(s):  
Dark Matter ◽  
Massive Particle ◽  
Indirect Detection ◽  
Small Scale ◽  
Weakly Interacting ◽  
Small Scales ◽  
Collisional Damping ◽  
Hubble Horizon ◽  
The Universe

It is known that the smallest size of the structures of the Universe with the weakly interacting massive dark matter is determined by the scale that enters the Hubble horizon at the time of kinetic decoupling of WIMP. This comes from the fact that the perturbation at smaller scales is erased due to the collisional damping during the kinetic decoupling. However the isocurvature mode is not affected and continue to be constant. We discuss about the generation of the isocurvature mode of WIMP dark matter at small scales recently found by Choi, Gong, and Shin1 and its implications for the indirect detection of dark matter through the formation of the small size of halos.

scholarly journals Indirect searches for dark matter with the Fermi LAT instrument

2014 ◽  
Vol 29 (22) ◽  
pp. 1430030 ◽  
Author(s):  
M. N. Mazziotta ◽  
Keyword(s):  
Dark Matter ◽  
Gamma Ray ◽  
Cosmic Ray ◽  
Weakly Interacting Massive Particles ◽  
Current Status ◽  
Large Area ◽  
Weakly Interacting ◽  
Electron Positron ◽  
Massive Particles ◽  
Particle Dark Matter

In this review the current status of several searches for particle dark matter with the Fermi Large Area Telescope instrument is presented. In particular, the current limits on the weakly interacting massive particles, obtained from the analyses of gamma-ray and cosmic ray electron/positron data, will be illustrated.

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