Sentences with phrase «wimp models»

The decaying theoretical underpinnings for simple WIMP models, paired with the growing list of empty - handed detection efforts, have led Feng and many others to propose that WIMPs are part of a more complicated picture: a hidden realm of the universe filled with varieties of dark particles interacting with one another through a suite of dark forces, perhaps exchanging dark charges through bursts of dark light.

On the other, they have ruled out some of the simplest and most cherished WIMP models, raising fresh fears that WIMPs might be a multidecadal detour in the search for dark matter.

On the other, they have ruled out some of the simplest and most cherished WIMP models, raising fresh fears that the long - postulated particles might be a multidecadal detour in the search for dark matter.

«There's a simplistic beauty to the WIMP model.

Not exact matches

Dark matter is not necessarily composed of WIMPs — theorists have identified a host of other possible dark - matter particles — but they are the leading candidates because their presence would close a loophole in the reigning theory of particle physics, called the standard model.

The results back up intriguing models which say dark matter could be akin to normal matter in that it could be made of many kinds of particle, with low - mass WIMPs only one component.

It could also flesh out recent models that suggest WIMPs are less able to interact with normal matter than once thought.

Other models say that dark matter may be a mix of classic WIMPs and WIMP - like cousins that would interact with each other via a hypothetical dark force.

Straightforward extrapolation of the Standard Model to that primordial epoch suggests that WIMPs should have been produced in enormous numbers in the dense, hot plasma that filled the universe immediately after the big bang.

So they plump for a model in which the brown dwarfs revealed by microlensing are part of the relatively small but heavy spheroid, while the even heavier extended dark halo is made up of the more exotic particles variously known as WIMPs or cold dark matter.

In this model, WIMPs that crash into other WIMPs mutually annihilate and convert into gamma rays, the most energetic form of light.

In a paper published in Physical Review D on March 22, Caputo and her colleagues modeled the dark matter content of the SMC, showing it possessed enough to produce detectable signals for two WIMP types.

Some models predict that EGB gamma rays could arise from distant interactions of dark matter particles, such as the annihilation or decay of WIMPs.

In many models, a WIMP is its own anti-particle, meaning that when two dark matter particles meet, they annihilate to produce more - familiar particles, including gamma rays detectable by Earth - and space - based telescopes.

The first is that WIMPs are a natural consequence of the most popular extensions to the Standard Model of particle physics, which predicts their production shortly after the big bang.

The simplest models predict there should be only a certain amount of dark matter hanging around, and that WIMPs should rarely meet.

«Changing the dark matter model enlarges the lamp post you're looking under,» he says, upping our chances of finding WIMPs — and other things besides.

In one new model of dark matter, most WIMPs in our galaxy live in a diffuse spherical cloud, while about 15 per cent have been drawn into a disc, like a shadow Milky Way (see «Twist in dark matter tale hints at shadow Milky Way «-RRB-.

The published results of these studies have set stringent limits on the mass ranges and interaction rates for many proposed WIMPs, even eliminating some models.

There are no particles in the Standard Model of Particle Physics that are WIMPs, so the nature of dark matter has been one major problem pushing physicists to explore extensions of the Standard Model.

As mentioned in the previous section, models that use «cold dark matter» of «WIMPs» provide the best fit to the observed structures.

First - guess models for what it is suggests that it is one particle that doesn't really interact with much of anything — WIMPs.