How Heavy Is Dark Matter? For the First Time Scientists Radically Narrow the Potential Mass Range

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Scientists have actually computed the mass variety for Dark Matter – and it’s tighter than the science world believed.   

Their findings – due to be released in Physical Letters B in March – significantly narrow the variety of possible masses for Dark Matter particles, and assist to focus the look for future Dark Matter-hunters.  The University of Sussex scientists utilized the recognized reality that gravity acts upon Dark Matter simply as it acts upon the noticeable universe to exercise the lower and ceilings of Dark Matter’s mass. 

The results program that Dark Matter cannot be either ‘ultra-light’ or ‘super-heavy’, as some have actually thought, unless an as-yet undiscovered force likewise acts on it.  

The group utilized the presumption that the only force acting upon Dark Matter is gravity, and computed that Dark Matter particles should have a mass in between 10-3 eV and 107 eV. That’s a much tighter variety than the 10-24 eV – 1019 GeV spectrum which is usually thought. 

What makes the discovery a lot more substantial is that if it ends up that the mass of Dark Matter is beyond the variety forecasted by the Sussex group, then it will likewise show that an extra force – along with gravity – acts upon Dark Matter.  

Professor Xavier Calmet from the School of Mathematical and Physical Sciences at the University of Sussex, stated: 

“This is the very first time that anybody has actually believed to utilize what we understand about quantum gravity as a method to compute the mass variety for Dark Matter. We were shocked when we understood no-one had actually done it previously – as were the fellow researchers evaluating our paper.  

“What we’ve done shows that Dark Matter cannot be either ‘ultra-light’ or ‘super-heavy’ as some theorize – unless there is an as-yet unknown additional force acting on it. This piece of research helps physicists in two ways: it focuses the search area for Dark Matter, and it will potentially also help reveal whether or not there is a mysterious unknown additional force in the universe.” 

Folkert Kuipers, a PhD trainee dealing with Professor Calmet, at the University of Sussex, stated: 

“As a PhD student, it’s great to be able to work on research as exciting and impactful as this. Our findings are very good news for experimentalists as it will help them to get closer to discovering the true nature of Dark Matter.” 

The noticeable universe – such as ourselves, the worlds and stars – represent 25 percent of all mass in deep space. The staying 75 percent is consisted of Dark Matter.  

It is understood that gravity acts upon Dark Matter since that’s what represent the shape of galaxies.

Reference: “Theoretical bounds on dark matter masses” by Xavier Calmet and Folkert Kuipers, 13 January 2021, Physics Letters B.
DOI: 10.1016/j.physletb.2021.136068



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