Questions tagged [wimps]

Weakly Interacting Massive Particles

Filter by
Sorted by
Tagged with
0
votes
0answers
23 views

Phase space density function and Probability density function

I am reading a text which talks about the WIMP speed distribution in the galactic halo in the frame of the Sun and Earth. The point where I am stuck it is trying to explain the concept of ...
1
vote
1answer
59 views

Why use xenon in the search for dark matter?

The XENON dark matter research project is an interesting long-running project that strives to detect dark matter. I understand that the basic principle of the project design is that WIMPs are expected ...
3
votes
1answer
97 views

black dwarf stars and dark matter

Today we understand that a black dwarf star represents a hypothetical star that is the result of the complete consumption of the energy of a white dwarf which is the remnant of a star of little or ...
2
votes
1answer
25 views

How can I understand the reaction rate of WIMP dark matter intuitively?

I'm reading a cosmology textbook(sorry it's Japanese) and stacked at statement that If the mass of WIMP is enough smaller than 100GeV, the reaction rate is represented as $\langle \sigma_a |\mathbf{\...
3
votes
1answer
71 views

What formula is used to make exclusion plot in the direct detection of dark matter?

The idea of direct detection of dark matter is that a dark matter particle striking some underground target will cause the target nucleus to recoil. From the recoil, one can determine the scattering ...
2
votes
1answer
69 views

Why heavy bosons are unstable?

I'm​ working with dark matter and in the some of concepts is that shall exist WIMPs (weakly interacting massive particles) in which are made by baryons... However, we know that this cannot satisfy the ...
1
vote
1answer
66 views

Overlap between experimental searches for axion and WIMP dark matter

Are there experiments which search for WIMPs that also set limits for the axion? I'm doing a literature review on axions, and I've been told I should include a brief overview of WIMP searches as they ...
0
votes
1answer
96 views

When and where was WIMP dark matter formed?

Is the formation of WIMP dark matter confined to the high number densities associated with the early stages of the formation of the universe or are conditions in the collisions of black holes such ...
1
vote
2answers
67 views

Search for WIMPs

Apparently one means of detecting WIMPs is to search for a photon ejected when one interacts with matter. If we don't know its mass or velocity and the weak interaction implies the absence of charge, ...
3
votes
2answers
848 views

Spin-dependent and spin-independent interactions of the dark matter

What is meant by spin-dependent and spin-independent interactions of the dark matter with the nuclei? How is the interaction between nucleus and DM modeled? What can we conclude if the DM-nuclei ...
4
votes
1answer
133 views

Direct Dark Matter Detection: relative velocity between WIMPs & Nuclei

In direct dark matter detection it is said that the relative velocity between the WIMPs, which form a DM halo, and the target nuclei on earth is of order $100 \frac{\text{km}}{\text{s}}$. How does one ...
1
vote
1answer
132 views

How do funnels hinder (help?) detection of dark matter?

I came across some a new (to me) bit of terminology at a seminar recently. In the context of dark matter scattering off of atomic nuclei (but I think it may apply more generally for any particle ...
2
votes
2answers
159 views

ΧΕΝΟΝ1Τ: Will it fail to discover DM? Why is it necessary? What benefits for society?

Since a new experiment (ΧΕΝΟΝ1Τ) will take place in Italy to directly detect WIMPs and since there are already many experiments trying to do the same or something similar (e.g. CERN LHC, LUX, CoGent, ...
1
vote
0answers
35 views

Do clouds of dark matter cool and contract?

If dark matter participates in the weak interaction, clouds could cool via thermal neutrino radiation...? And even if does not participate in the weak interaction, clouds should contract via ...
3
votes
1answer
480 views

WIMPs - would they be charged?

I'm no expert in this stuff, it's just a hobby to me, but I've been reading up on the WIMP theory a bit - layman articles, not published research. From Wiki on Dark Matter: It also cannot ...
3
votes
1answer
304 views

Interpretation of the WIMP annihilation cross section graph

I have some trouble in the interpretation of the WIMP cross-section annihilation versus their mass. I understand that the lines represent a upper bound on the cross section from the observation. But ...
5
votes
2answers
840 views

Is cold dark matter made of Higgs bosons?

This paper (2010) hypothesizes that Higgs bosons might be absolutely stable, allowing them to serve as a cold dark matter candidate: The Higgs boson is in the backbone of the standard model of ...
8
votes
1answer
111 views

Temperature of WIMPs

As a dark matter candidate, what should be the temperature and kinetic energy (or also the speed) of the WIMPs (weakly interacting massive particles) to agree with the observed distribution of dark ...
5
votes
2answers
560 views

More on matter and anti-matter

Does every particle that has rest mass also have an anti-particle with which it would annihilate? Does annihilation only occur between like particles? For example what happens if a antineutron (anti ...