Angular signatures for galactic halo weakly interacting massive particle scattering in direct detectors: Prospects and challenges

2001 ◽  
Vol 63 (4) ◽  
Author(s):  
Craig J. Copi ◽  
Lawrence M. Krauss
Keyword(s):  
Galactic Halo ◽  
Massive Particle ◽  
Particle Scattering ◽  
Weakly Interacting

scholarly journals Detecting Cold Dark Matter Candidates

1987 ◽  
Vol 117 ◽  
pp. 490-490
Author(s):  
A. K. Drukier ◽  
K. Freese ◽  
D. N. Spergel
Keyword(s):  
Dark Matter ◽  
Cold Dark Matter ◽  
Galactic Halo ◽  
Dark Matter Particle ◽  
Low Energy ◽  
The Sun ◽  
Background Rate ◽  
System Noise ◽  
Weakly Interacting ◽  
Massive Neutrinos

We consider the use of superheated superconducting colloids as detectors of weakly interacting galactic halo candidate particles (e.g. photinos, massive neutrinos, and scalar neutrinos). These low temperature detectors are sensitive to the deposition of a few hundreds of eV's. The recoil of a dark matter particle off of a superheated superconducting grain in the detector causes the grain to make a transition to the normal state. Their low energy threshold makes this class of detectors ideal for detecting massive weakly interacting halo particles.We discuss realistic models for the detector and for the galactic halo. We show that the expected count rate (≈103 count/day for scalar and massive neutrinos) exceeds the expected background by several orders of magnitude. For photinos, we expect ≈1 count/day, more than 100 times the predicted background rate. We find that if the detector temperature is maintained at 50 mK and the system noise is reduced below 5 × 10−4 flux quanta, particles with mass as low as 2 GeV can be detected. We show that the earth's motion around the Sun can produce a significant annual modulation in the signal.

scholarly journals SINGLE-HIT CRITERION IN DAMA/LIBRA DM SEARCH AND DAEMONS — THEY ARE ANYTHING BUT WEAKLY INTERACTING

2008 ◽  
Vol 23 (40) ◽  
pp. 3367-3375 ◽  
Author(s):  
E. M. DROBYSHEVSKI
Keyword(s):  
Surface Area ◽  
Galactic Halo ◽  
Condensed Matter ◽  
Large Surface Area ◽  
Weakly Interacting ◽  
Multiple Interaction ◽  
Electrically Charged

Our prediction that the more massive DAMA/LIBRA detector would detect a smaller number of events per unit of mass and time than the DAMA/NaI system has got confirmation. It is easy to understand, because DM objects are by far not the WIMPs of the Galactic halo that interact only weakly with matter but are apparently electrically charged Planckian objects, i.e. daemons which fall from Earth-crossing orbits with V = 30–50 km/s and undergo multiple interaction with condensed matter already in its outer layers, on a path of a few tens of cm. Therefore, one should use not compact massive detectors but rather systems with a large surface area, as we did to detect daemons with thin ZnS ( Ag ) scintillators. There are grounds to believe that correct use of the single-hit criterion in LIBRA should reveal DM particles with V = 30–50 km/s, and subsequently, with V = 10–15 km/s as well.

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.

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