scholarly journals New type of charged Q -ball dark matter in gauge mediated SUSY breaking models

2017 ◽  
Vol 95 (12) ◽  
Author(s):  
Jeong-Pyong Hong ◽  
Masahiro Kawasaki
Keyword(s):  
Dark Matter ◽  
Susy Breaking ◽  
New Type

The first results of PandaX-4T

2022 ◽  
Author(s):  
Jianglai Liu
Keyword(s):  
Dark Matter ◽  
Data Analysis ◽  
Liquid Xenon ◽  
Observable Universe ◽  
Fundamental Particle ◽  
Search Results ◽  
Visible Matter ◽  
First Results ◽  
New Type ◽  
Deep Underground

Dark matter, an invisible substance which constitutes 85% of the matter in the observable universe, is one of the greatest puzzles in physics and astronomy today. Dark matter can be made of a new type of fundamental particle, not yet observed due to its feeble interactions with visible matter. In this talk, we present the first results of PandaX-4T, a 4-ton-scale liquid xenon dark matter observatory, searching for these dark matter particles from deep underground. We will briefly summarize the performance of PandaX-4T, introduces details in the data analysis, and present the latest search results on dark matter-nucleon interactions.

scholarly journals An Instrument to Study the Diffuse EUV Astronomical Background

1996 ◽  
Vol 152 ◽  
pp. 611-616 ◽  
Author(s):  
S. Bowyer ◽  
J. Edelstein ◽  
M. Lampton ◽  
L. Morales ◽  
J. Perez Mercader ◽  
...  
Keyword(s):  
Dark Matter ◽  
Interstellar Medium ◽  
Extreme Ultraviolet ◽  
Unique Line ◽  
Upper Limits ◽  
Diffuse Background ◽  
Source Mechanisms ◽  
New Type

The extreme ultraviolet (EUV) diffuse background is the most poorly known of any of the diffuse astronomical backgrounds. Only upper limits to this flux exist, obtained with spectrometers with very crude (from ≈ 15 to 30 Å) resolution; these limits are generally one to two orders of magnitude larger than the expected sources of cosmic flux. A variety of source mechanisms have been postulated to radiate in this bandpass; the most discussed is the hot phase of the interstellar medium. A speculative possibility is that hot dark matter in the form of massive, radiatively unstable neutrinos in our Galaxy will produce a unique line in this bandpass. We describe an instrument employing a new type of spectrometer which will provide ~5 Å resolution and unprecedented sensitivity for diffuse EUV radiation. The instrument will be carried aboard the newly developed Spanish Minisat satellite.

scholarly journals SOFT LEPTOGENESIS AND GRAVITINO DARK MATTER IN GAUGE MEDIATION

2011 ◽  
Vol 20 (08) ◽  
pp. 1533-1538
Author(s):  
KOICHI HAMAGUCHI ◽  
N. YOKOZAKI
Keyword(s):  
Dark Matter ◽  
Baryon Asymmetry ◽  
Susy Breaking ◽  
Gauge Mediation ◽  
Susy Particle ◽  
The Universe

In gauge mediated SUSY breaking models, the gravitino is generally the lightest SUSY particle and can be a candidate for a dark matter. However the viable abundance of the gravitino requires rather low reheating temparature. With this low reheating temparature, it is difficult to explain the baryon asymmetry of the universe with thermal leptogenesis. We consider the extended scenario of the gauge mediation, which generates A-terms. In this extended scenario, soft leptogenesis works successfully with the low reheating temperature. Therefore we can explain the baryon asymmetry and gravitino dark matter simultaneously.

scholarly journals Dark matter from dynamical SUSY breaking

2010 ◽  
Vol 2010 (6) ◽  
Author(s):  
JiJi Fan ◽  
Jesse Thaler ◽  
Lian-Tao Wang
Keyword(s):  
Dark Matter ◽  
Susy Breaking
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