DAMA is at it Again!

Remember how I told you earlier this week that DAMA was going to announce that they found dark matter, even though the signal that they found is not consistent with other experiments?

Looks like my powers of predicting the future are pretty damned good. They have a new plot with more data showing the continued modulation at a certain energy range:

and also one showing the fact that they see a bunch of extra events happening in that energy range:

So here's the stuff that DAMA has seen: a nuclear recoil that has many events in a certain energy range, and has a 2% annual modulation in that energy range. Do we know what causes it? No. Do we know that it isn't WIMPs of a certain type (from CDMS/Edelweiss)? Yes. But does this necessarily mean that it's dark matter? No, although it's possible. What we need is a way to identify what's actually causing the signal that they see, and they don't actually have that yet.

So in conclusion, they see more of the same signal they saw before, we still know that it isn't the dark matter that CDMS and Edelweiss are looking for, and we're still not sure what's causing their signal. It could be a lot of things, and although certain types of dark matter can be ruled out, not all of them can. Dark matter? Maybe. But if I had a farm, I wouldn't bet it on this.

More like this

The DAMA collaboration, an experimental team searching for dark matter via direct detection, is poised to report this week that they have discovered Dark Matter. And I'm here to pre-empt that by bringing you the truth: no, they haven't. They take some very cold (cryogenic) atoms, look for nuclear…
Today’s article comes courtesy of Sabine Hossenfelder. Sabine is an assistant professor for high energy physics at Nordita, Stockholm. She writes a blog called Backreaction and tweets as @skdh. Dark matter is one of the most elusive and puzzling entities in our Universe today. We have plenty of…
"By now you must know that your father can never be turned from the Dark Side. So will it be with you." -Emperor Palpatine, Return of the Jedi You've heard about dark matter. It's the notion that the Universe is somehow very much different than the small corner of it that we're most familiar with…
So I've been hanging out at the Indirect and Direct Detection of Dark Matter conference this week, and been struck by several things. It is a good meeting, enthusiastic crowd, definite excitement in the air.It would have read much better if the title had been "Direct and Indirect Detection of Dark…