Scientists at CERN observe three “exotic” particles for first time
GENEVA, July 5 (Reuters) – Scientists working with the Large Hadron Collider (LHC) have discovered three subatomic particles never seen before as they work to unlock the building blocks of the universe, the European nuclear research centre CERN said on Tuesday.
more…
https://www.theage.com.au/world/europe/ten-years-on-from-the-god-particle-we-may-have-found-a-fifth-force-of-nature-20220705-p5az5c.html
Tau.Neutrino said:
Scientists at CERN observe three “exotic” particles for first timeGENEVA, July 5 (Reuters) – Scientists working with the Large Hadron Collider (LHC) have discovered three subatomic particles never seen before as they work to unlock the building blocks of the universe, the European nuclear research centre CERN said on Tuesday.
more…
CERN press release at https://home.cern/news/news/physics/lhcb-discovers-three-new-exotic-particles
> say they have observed a new kind of “pentaquark” and the first-ever pair of “tetraquarks”
Most of the new particles found at CERN these days are pentaquarks and tetraquarks.
> a pentaquark made up of a charm quark and a charm antiquark and an up, a down and a strange quark. It is the first pentaquark found to contain a strange quark. The finding has a whopping statistical significance of 15 standard deviations, far beyond the 5 standard deviations that are required to claim the observation of a particle in particle physics.
15 sigma is huge.
> a doubly electrically charged tetraquark. It is an open-charm tetraquark composed of a charm quark, a strange antiquark, and an up quark and a down antiquark, and it was spotted together with its neutral counterpart in a joint analysis of decays of positively charged and neutral B mesons. The new tetraquarks, observed with a statistical significance of 6.5 (doubly charged particle) and 8 (neutral particle) standard deviations, represent the first time a pair of tetraquarks has been observed.
I’m not quite sure how many pentaquarks and tetraquarks have been discovered so far.
Possibly 17 tetraquarks?
Possibly 4 pentaquarks?
Margaret: Have you heard about CERN?
Me: *copies from this thread-“ENEVA, July 5 (Reuters) – Scientists working with the Large Hadron Collider (LHC) have discovered three subatomic particles never seen before as they work to unlock the building blocks of the universe, the European nuclear research centre CERN said on Tuesday.”
Me: *googles.
“oh. you have been watching conspiracy theories on tiktok again.” sigh.
“I was wondering what your new interest in particle physics was about.”
Margaret: “The black hole as Simpson’s predicted”
sarahs mum said:
Margaret: Have you heard about CERN?Me: *copies from this thread-“ENEVA, July 5 (Reuters) – Scientists working with the Large Hadron Collider (LHC) have discovered three subatomic particles never seen before as they work to unlock the building blocks of the universe, the European nuclear research centre CERN said on Tuesday.”
Me: *googles.
“oh. you have been watching conspiracy theories on tiktok again.” sigh.
“I was wondering what your new interest in particle physics was about.”
Margaret: “The black hole as Simpson’s predicted”
That’s actually a good point.
The black hole from the “large extra dimensions” version of string theory never turned up. It was very unlikely anyway because there were no reasons to suppose that those extra dimensions from string theory were large. It still remains a possibility although I think (nearly) everyone has given up on it now.
Another possibility would be particles from supersymmetry. They never showed up either. :-(
And we’re still looking for the particle responsible for dark matter. Heaps of attempts, no successes so far. Which makes me wonder. It’s just possible thar the James Webb could pin down velocities in the outer solar system well enough for us to find dark matter within our own solar system. No, I take that back. If New Horizons couldn’t find any sign of it at Pluto then it’s unlikely that Webb has the accuracy to spot it.
mollwollfumble said:
sarahs mum said:
Margaret: Have you heard about CERN?Me: *copies from this thread-“ENEVA, July 5 (Reuters) – Scientists working with the Large Hadron Collider (LHC) have discovered three subatomic particles never seen before as they work to unlock the building blocks of the universe, the European nuclear research centre CERN said on Tuesday.”
Me: *googles.
“oh. you have been watching conspiracy theories on tiktok again.” sigh.
“I was wondering what your new interest in particle physics was about.”
Margaret: “The black hole as Simpson’s predicted”
That’s actually a good point.
The black hole from the “large extra dimensions” version of string theory never turned up. It was very unlikely anyway because there were no reasons to suppose that those extra dimensions from string theory were large. It still remains a possibility although I think (nearly) everyone has given up on it now.
Another possibility would be particles from supersymmetry. They never showed up either. :-(
And we’re still looking for the particle responsible for dark matter. Heaps of attempts, no successes so far. Which makes me wonder. It’s just possible thar the James Webb could pin down velocities in the outer solar system well enough for us to find dark matter within our own solar system. No, I take that back. If New Horizons couldn’t find any sign of it at Pluto then it’s unlikely that Webb has the accuracy to spot it.
But what would this “black hole from the “large extra dimensions” version of string theory” look like and how would it be detected?
Also I don’t know why it seems to be an assumption that dark matter is made of particles.