The Search for Sterile Neutrinos in IceCube
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- čas přidán 11. 09. 2024
- In a study published today in the journal Physical Review Letters, IceCube researchers may have largely put to rest the notion of a light sterile neutrino. In two independent analyses of data from the massive Antarctic detector-each consisting of a year’s worth of data, or about 100,000 neutrino events-the striking feature associated with the sterile neutrino was nowhere to be found. The group concludes that, with 99 percent certainty, the eV-mass sterile neutrino hinted at by previous experiments does not exist.
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Great video, I'd love to work at a detector like this someday.
amazingly intriguing beginning and ending music :D
I'm trying to listen I really am. At about 3:43 does he say "evidence for nine sterile neutrino"? It's hard to make out.
EDIT: OK, closed captioning says "light sterile neutrino". Closed captioning actually works. Usually I turn on closed captioning and am disappointed.
Are neutrinos affected by gravity? Asking for a friend.
Anything with mass has to be affected by gravity, whatsoever small that affect may be -- quantum gravity might in future enlighten us on this!!
@@sudhakarreddy1453 even something without mass but having a momentum, e.g. photons, will be affected too.
So, how do you detect a sterile neutrino???
We don't detect them one by one. If they exist, we would see a disappearance of muon neutrinos in IceCube, because they would have changed (oscillated) into a sterile neutrino, which will leave no trace in IceCube.
How do you discern a muon neutrino just escaping IceCube undetected, from one that changes into a sterile neutrino?
You cannot distinguish them one by one. If a certain amount of muon neutrinos change into sterile neutrinos, then we will observe less muon neutrinos in IceCube.
Would it be possible to deliberately alter the expected statistical average of the neutrino flavor count in some way and use the source for a communication system?
great video. I subscribed.
I thought a nutrino was a fast muscle car
so what is the connection between neutrino and dark matter? I know neutrino is not a dominant candidate, but can it represent a part of dark matter?
Sterile neutrinos, if they exist and if they have a large mass, could account for some of the dark matter in our universe.
So, a hypothesis looking for data, NOT data looking for a hypothesis. I would call that backward science.
The hypothesis makes a prediction then you check if the data makes that prediction…
:D I'm not learning a thing!
So you dont have a clue.