Sneutrino in non minimal supersymmetric models: relevance as cold dark matter candidate

2009 ◽  
Author(s):  
Chiara Arina ◽  
Shaaban Khalil
Keyword(s):  
Dark Matter ◽  
Cold Dark Matter ◽  
Dark Matter Candidate ◽  
Supersymmetric Models

scholarly journals Is the stable tau-neutrino really an allowable cold dark matter candidate?

1996 ◽  
Vol 375 (1-4) ◽  
pp. 223-226 ◽  
Author(s):  
Daniele Fargion ◽  
Maxim Yu. Khlopov ◽  
Rostislav V. Konoplich ◽  
Roberto Mignani
Keyword(s):  
Dark Matter ◽  
Cold Dark Matter ◽  
Dark Matter Candidate ◽  
Tau Neutrino

scholarly journals DARK MATTER CANDIDATE IN A HEAVY HIGGS MODEL: DIRECT DETECTION RATES

2008 ◽  
Vol 23 (24) ◽  
pp. 2011-2022 ◽  
Author(s):  
DEBASISH MAJUMDAR ◽  
AMBAR GHOSAL
Keyword(s):  
Dark Matter ◽  
Higgs Boson ◽  
Cold Dark Matter ◽  
Direct Detection ◽  
Scalar Potential ◽  
Higgs Model ◽  
Boson Mass ◽  
Dark Matter Candidate ◽  
Detection Rates ◽  
200 Gev

We investigate direct detection rates for Dark Matter candidates arise in a SU (2)L× U (1)Y with an additional doublet Higgs proposed by Barbieri, Hall and Rychkov. We refer to this model as "Heavy Higgs Model". The Standard Model Higgs mass comes out from this model is very heavy, so there is very slim chance that there is no Higgs boson mass below 200 GeV. The additional Higgs boson develops neither any VEV due to the choice of coefficient of the scalar potential of the model nor it has any coupling with fermions due to the incorporation of a discrete parity symmetry. Thus, the neutral components of the extra doublet are stable and can be considered as probable candidate of Cold Dark Matter. We have made calculations for three different types of Dark Matter experiments, namely, 76 Ge (like GENIUS), DAMA (NaI) and XENON (131 Xe ). Also demonstrated the annual variation of Dark Matter detection in case of all three

scholarly journals Axion as a cold dark matter candidate: Low-mass case

2012 ◽  
Vol 86 (8) ◽  
Author(s):  
Chan-Gyung Park ◽  
Jai-chan Hwang ◽  
Hyerim Noh
Keyword(s):  
Dark Matter ◽  
Cold Dark Matter ◽  
Dark Matter Candidate ◽  
Low Mass ◽  
Mass Case

scholarly journals DARK MATTER PREDICTION FROM CANONICAL QUANTUM GRAVITY WITH FRAME FIXING

2004 ◽  
Vol 19 (37) ◽  
pp. 2777-2784 ◽  
Author(s):  
GIOVANNI CORVINO ◽  
GIOVANNI MONTANI
Keyword(s):  
Dark Matter ◽  
Cold Dark Matter ◽  
Dark Matter Candidate ◽  
New Energy ◽  
Frw Model ◽  
Canonical Quantum Gravity ◽  
The Universe ◽  
Matter Component ◽  
Canonical Quantum ◽  
Relativistic Matter

We show how, in canonical quantum cosmology, the frame fixing induces a new energy density contribution having features compatible with the (actual) cold dark matter component of the Universe. First we quantize the closed Friedmann–Robertson–Walker (FRW) model in a synchronous reference and determine the spectrum of the super-Hamiltonian in the presence of ultra-relativistic matter and a perfect gas contribution. Then we include in this model small inhomogeneous (spherical) perturbations in the spirit of the Lemaitre–Tolman cosmology. The main issue of our analysis consists in outlining that, in the classical limit, the nonzero eigenvalue of the super-Hamiltonian can account for the present value of the dark matter critical parameter. Furthermore we obtain a direct correlation between the inhomogeneities in our dark matter candidate and those that appear in the ultra-relativistic matter.

Axion as a cold dark matter candidate

2009 ◽  
Vol 680 (1) ◽  
pp. 1-3 ◽  
Author(s):  
Jai-chan Hwang ◽  
Hyerim Noh
Keyword(s):  
Dark Matter ◽  
Cold Dark Matter ◽  
Dark Matter Candidate

scholarly journals Axion as a cold dark matter candidate: Proof to second order

2013 ◽  
Vol 726 (4-5) ◽  
pp. 559-563 ◽  
Author(s):  
Hyerim Noh ◽  
Chan-Gyung Park ◽  
Jai-chan Hwang
Keyword(s):  
Dark Matter ◽  
Cold Dark Matter ◽  
Second Order ◽  
Dark Matter Candidate

scholarly journals Massive Graviton as a Testable Cold-Dark-Matter Candidate

2005 ◽  
Vol 94 (18) ◽  
Author(s):  
S. L. Dubovsky ◽  
P. G. Tinyakov ◽  
I. I. Tkachev
Keyword(s):  
Dark Matter ◽  
Cold Dark Matter ◽  
Dark Matter Candidate ◽  
Massive Graviton

scholarly journals STRUCTURE FORMATION WITH MIRROR DARK MATTER: CMB AND LSS

2005 ◽  
Vol 14 (01) ◽  
pp. 107-119 ◽  
Author(s):  
ZURAB BEREZHIANI ◽  
PAOLO CIARCELLUTI ◽  
DENIS COMELLI ◽  
FRANCESCO L. VILLANTE
Keyword(s):  
Dark Matter ◽  
Structure Formation ◽  
Large Scale ◽  
Cold Dark Matter ◽  
Big Bang ◽  
Dark Matter Candidate ◽  
Microwave Background ◽  
Quantitative Calculation ◽  
World Hypothesis ◽  
The Big Bang

In the mirror world hypothesis, the mirror baryonic component emerges as a possible dark matter candidate. An immediate question arises: how do the mirror baryons behave and what are their differences from the more familiar dark matter candidates such as cold dark matter? In this paper, we answer this question quantitatively. First, we discuss the dependence of the relevant scales for the structure formation (Jeans and Silk scales) on the two macroscopic parameters necessary to define the model: the temperature of the mirror plasma (limited by the Big Bang Nucleosynthesis) and the amount of mirror baryonic matter. Then we perform a complete quantitative calculation of the implications of mirror dark matter on the cosmic microwave background and large scale structure power spectrum. Finally, confronting with the present observational data, we obtain some bounds on the mirror parameter space.

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