Dark Photon Found by Hungarian Scientists in 2016

In summary: As a mere intellectual mortal, I have no problem with new "stuff", explaining, or trying to explain, the unexplained.In summary, in January 2016, Dr. Attila Krasznahorkay and his colleagues published a paper announcing the discovery of a dark photon with a mass of 17 megaelectronvolts (MeV) by firing protons at lithium-7. This particle was named 17-MeV and could potentially be evidence of a fifth fundamental force. However, this finding is still highly debated and not widely accepted in the scientific community. Occam's razor suggests that if existing theories can explain the data, no new entities should be added, but if they cannot, any additions
  • #1
Tollendal
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In January 2016, Dr. Attila Krasznahorkay (at the Hungarian Academy of Sciences’s Institute for Nuclear Research in Debrecen, Hungary) and his colleagues published a paper announcing he had found a dark photon by firing protons at lithium-7, which created unstable beryllium-8 nuclei that then decayed into pairs of electrons and positrons. The particle’s mass was 17 megaelectronvolts (MeV), earning it the name 17-MeV.
 
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  • #2
Tollendal said:
In January 2016, Dr. Attila Krasznahorkay (at the Hungarian Academy of Sciences’s Institute for Nuclear Research in Debrecen, Hungary) and his colleagues published a paper announcing he had found a dark photon by firing protons at lithium-7, which created unstable beryllium-8 nuclei that then decayed into pairs of electrons and positrons. The particle’s mass was 17 megaelectronvolts (MeV), earning it the name 17-MeV.
Link to the paper?
 
  • #4
But 17.6 MeV is so low, shouldn't it have been observed in the last say five decades at various places?
 
  • #5
fresh_42 said:
But 17.6 MeV is so low, shouldn't it have been observed in the last say five decades at various places?
I'm not a particle physicist, so I'm not quite sure.
All I know, is that if someone observes something new, and unexpected, they should report the finding.

I saw the article yesterday, via Scientific American. [ref]

Fun "Omic" thought process:

...this January in the journal Physical Review Letters. But the report – which posited the existence of a new, light boson only 34 times heavier than the electron—was largely overlooked.

aka, "whackadoodle". Ignore it.

Then, on April 25, a group of US theoretical physicists brought the finding to wider attention by publishing its own analysis of the result on arXiv. The theorists showed that the data didn’t conflict with any previous experiments—and concluded that it could be evidence for a fifth fundamental force.

Yay!

As a mere intellectual mortal, I have no problem with new "stuff", explaining, or trying to explain, the unexplained.
 
  • #6
All I know is that the sciencealert site isn't very trustful. They are a kind of Yellow Press among scientific alerts. I'm curious and open to new stuff as well and think there are really some fundamental discoveries to be made before we can lean on a "final" theory that properly describes spacetime or the symmetry breaks in the SM. I think new ideas are far too often labeled "crackpot" just because it needs an open mind to consider them. But this is probably as old as science itself. Nevertheless, 17.6MeV seems to be a lab size energy and it makes me wonder that something on this scale should have been overlooked by so many and over so many years.
 
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  • #10
OmCheeto said:
As a mere intellectual mortal, I have no problem with new "stuff", explaining, or trying to explain, the unexplained.
Fair enough, but be careful of Occam's razor.
 
  • #11
Occam's razor is, however, a human artefact. It is there because we like things that way. Of course, it does seem to work well in practice so we sort of rely on it. But can we always do so?
 
  • #12
sophiecentaur said:
Occam's razor is, however, a human artefact. It is there because we like things that way. Of course, it does seem to work well in practice so we sort of rely on it. But can we always do so?
The way people use Occam's razor today, makes it indispensable. People don't just say simplest is best, that would be stupid because the main criterion is to explain the experimental observations accurately. So people say among the theories that all explain the data accurately, the simplest should be accepted. In the level that there is no theory that explains the observations, it means you shouldn't make unnecessary assumptions and add unnecessary entities to your theory. But still, the main criterion of explaining the observations is there, its just a criterion to choose between theories that do explain the data. This way, I can't see how using Occam's razor can do any harm!
Using Occam's razor on this new piece of data means that if existing assumptions and entities in our theories can explain it, we shouldn't add anything, but if they don't, we have to add something but should do it in a minimalistic way.
 
  • #13
For reference purposes, this paper has been discussed at some length in at least two recent prior threads in this forum:

https://www.physicsforums.com/threa...new-17-mev-vector-boson-on-higgs-susy.875311/
and
https://www.physicsforums.com/threads/new-particle-to-explain-lithium-7-big-bang-prediction.878545/

I've discussed the topic there and won't repeat myself. Suffice it to say that I'm highly skeptical and that this hypothesis is not widely accepted at this point.

Also, for what it is worth, while it is canonical to talk about four fundamental forces (EM, Weak, Strong, Gravity), the Higgs field really deserves "force" status as well, so if there were a new force I think it would be fair to call it a sixth force.
 
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What is a dark photon?

A dark photon is a hypothetical particle that is believed to be a carrier of a force between dark matter particles. It is theorized to interact only with dark matter and not with regular matter, making it difficult to detect.

How did Hungarian scientists find the dark photon in 2016?

The Hungarian research team used a new technique called "light-shining-through-a-wall" to search for the dark photon. They directed a laser beam through an opaque wall and looked for any signs of the dark photon interacting with the light.

Is the discovery of the dark photon confirmed?

While the Hungarian research team did find some possible evidence of the dark photon, it has not been confirmed by other experiments. Further research and experimentation is needed to confirm the existence of the dark photon.

What implications does the discovery of the dark photon have?

If the existence of the dark photon is confirmed, it would provide more evidence for the existence of dark matter, which makes up about 85% of the total matter in the universe. It could also potentially lead to new understandings of the fundamental forces in the universe.

How does the discovery of the dark photon impact current theories of physics?

The discovery of the dark photon would support theories that propose the existence of dark matter and the presence of additional fundamental forces besides the four known forces (gravity, electromagnetism, strong nuclear force, and weak nuclear force). It could also potentially lead to the development of new theories that can better explain the fundamental workings of the universe.

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