#particle-physics — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #particle-physics, aggregated by home.social.
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🚀 petrifyML v2.1.0 released!
New features include:
• Support for gradient-boosted TMVA BDTs
• TMVA MLP regressors
• Improved automatic feature-range estimation for BDTs
• Automatic compiler detectionAvailable now via pip or GitLab.
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What flings mysteriously powerful particles called 'cosmic rays' at Earth?
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'Like putting a microscope into the core of the sun': World's 1st space-based neutrino detector launches to orbit
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The fine-structure constant alpha ~ 1/137.036 is one of the most precisely measured numbers in physics, yet its origin remains unexplained. A new preprint reframes alpha not as an abstract coupling constant, but as a projective cross-ratio: the classical electron radius divided by the reduced Compton wavelength.
Full preprint: https://doi.org/10.5281/zenodo.20100109
#Physics #QuantumMechanics #Mathematics #ProjectiveGeometry #Science #Research #Academic #ParticlePhysics
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Molecules shed light on #DarkMatter: Analysis of precision measurements of unexplored interactions between electrons and atomic nuclei give information of new particles 👉 https://prisma.uni-mainz.de/en/2026/05/11/molecules-shed-light-on-dark-matter/
#ParticlePhysics #physics #antimatter #universe #cosmology #ClusterOfExcellencePRISMA
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Researchers are utilizing precision measurements of barium monofluoride (BaF) molecules to explore unmapped interactions between electrons and atomic nuclei, yielding new constraints on particles that may constitute dark matter.
#ParticlePhysics #MolecularPhysics #Astrophysics #DarkMatter #sflorg
https://www.sflorg.com/2026/05/phy05112601.html -
⚛️ #QuantumPhysics – Why we just can't seem to understand it!🤔
In the #Zoomposium with #GerdGanteför, we’ll be discussing precisely this fascinating boundary between #Mathematics, #Physics, and #Metaphysics.
📎 https://philosophies.de/index.php/2023/04/16/zoomposium-gerd-gantefoer/
📺 https://youtu.be/V4pUEEtFCUo
#Reality #BoundariesOfPhysics #QuantumMechanics #Science #NaturalScience #Philosophy #ScienceAndPhilosophy #QuantumInformation #ParticlePhysics #BoundariesOfKnowledge #PhysicsAndPhilosophy #MetaphysicsOfPhysics
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A photon was teleported across 270 meters in stunning quantum breakthrough. Via @sciencedaily_official #Science #Physics #QuantumPhysics #QuantumMechanics #ParticlePhysics 🔭🔬🧪🥼🧑🔬
A photon was teleported across... -
Lectures’ End
At last we’ve made it to the end of term. This morning I delivered my last particle physics lecture. Given that it is the last day of the semester I was half-expecting no students would turn up, but in the end I had about 60% attendance. At the end of my lecture there was even a smattering of applause, which I interpreted as meaning that the students were happy that I’d finished.
I thought I would end this module with some topics that I didn’t have time to cover in any detail, but thought the students should know at least something about. These loose ends included:
- Renormalization
- Grand Unified Theories (GUTS)
- Supersymmetry (SUSY)
- Particle candidates for Dark Matter
- Baryogenesis
I only had time for a superficial treatment of these topics, but felt the class should at least hear the words. There are some very good unanswered research questions under those headings, which I think is an appropriate way to end a final-year module, given that at least some of the class are intending to carry on to further study in physics.
Today was also the deadline for Computational Physics projects. I’ll be grading them next week. Even then the term won’t quite be over – there is the small matter of exam marking to be done – but at least I’ve got no more formal teaching to do until September.
Last night on the way home I decided to buy a nice bottle of white wine and put it in the fridge so I could drink it in celebration of the end of term when I get home, with a nice fish supper.
#MaynoothUniversity #ParticlePhysics #Physics -
@ravenbrook
It's the half-integer ones that really matter. -
⏰ ICHEP 2026 early registration has been extended to May 15!
A little more time to secure the reduced fee and join us in Natal 🇧🇷⚛️
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The Askaryan Radio Array, a grid of sensors buried deep within Antarctic ice, has successfully detected incoming high-energy cosmic rays by capturing the distinct radio wave bursts generated when these particles impact the ice.
#ParticlePhysics #Astrophysics #Astronomy #sflorg
https://www.sflorg.com/2026/05/phy05062601.html -
https://nebula.tv/videos/bobbybroccoli-the-21000000000-hole-in-texas
This was an amazingly in-depth watch. So many nuances. Highly recommend.
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Scientists catch antimatter “atom” acting like a wave for the first time. Via @sciencedaily_official #Science #Physics #ParticlePhysics 🔭🔬🧪🥼🧑🔬
Scientists catch antimatter “a... -
OBSERVATIONS OF THE ELUSIVE
Scientists are using new, smaller detectors at Fermilab to see neutrinos, also called 'ghost particles'. This helps us learn more about the universe.
#neutrinos, #particlephysics, #fermilab, #sciencedetector, #universestudy
https://newsletter.tf/new-detectors-see-ghost-particles-neutrinos-fermilab/
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Scientists are detecting neutrinos with new, smaller devices. This is a big step compared to older, larger detectors.
#neutrinos, #particlephysics, #fermilab, #sciencedetector, #universestudy
https://newsletter.tf/new-detectors-see-ghost-particles-neutrinos-fermilab/ -
👨🏫 #Einstein – The “Absolute Nature” of #LightSpeed🚀
What if one of the greatest #revolutions in #physics were based on a seemingly illogical #observation?
This #Zoomposium with #ThomasNaumann and #IljaBohnet explores precisely these kinds of open-ended and #fundamental questions.
📎https://philosophies.de/index.php/2022/10/26/zoomposium-naumann-bohnet-das-raetselhafte-universum/
#OpenQuestionsInPhysics #NaturalSciences #Cosmology #Philosophy #PhilosophyOfScience #ParticlePhysics #Order #CriticismOfScience #Research #Physics #Cosmos
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Is There Something Smaller Than Quarks? Experimental Test - YouTube
https://www.youtube.com/watch?v=THuOlazRwx4 -
This exotic particle could finally explain why matter has mass. Via @sciencedaily_official #Science #Physics #ParticlePhysics 🔭🔬🧪🥼🧑🔬
This exotic particle could fin... -
M.C. Escher and CP Violation
I’ve had these pictures for quite a while and can’t remember where I got them from, but I used to show them in my lectures on Theoretical Particle Physics when I was in Nottingham to illustrate CP-violation and used them in this morning’s lecture at Maynooth.
The following picture by M.C. Escher is called Day and Night:
If you look at it you can see two kinds of symmetry emerging. One is a kind of reflection symmetry about a vertical axis drawn through the centre of the picture that applies to shapes but not to colour. The other is between black and white. But it is obvious that the picture doesn’t display these symmetries separately: to get a picture unchanged from the original you would have to do the mirror reflection and change black to white (and vice-versa).
The mirror reflection in the image can be taken to represent parity (P). Strictly speaking parity refers to a reflection through the origin in 3D rather than a mirror reflection, but it’s just for illustration. We know that a parity symmetry is violated in weak interactions just as it is in the picture.
The other possible symmetry, between black and white can be taken to represent charge-conjugation (C), the operation that converts particles into anti-particles and vice-versa.
While P is not an exact symmetry of weak interactions, it was long thought that the combination of C and P (CP) would be. Actually it isn’t. The story of the discovery of CP-violation is fascinating but I don’t have time to go into it here. It suffices to say that the Escher print also displays CP violation.
First lets do `C’, i.e. convert black to white and vice-versa. The result is:
Now reflect about the vertical mid-line to illustrate `P’:
If `CP’ were an exact symmetry then that image would be identical to the original, which I reproduce here:
You can see, however, that while some elements of the picture do look the same after this combined operation (e.g. the birds), others (e.g. the buildings at the bottom) do not. Although CP is not an exact symmetry of this picture, it is almost (just like it is in particle physics).
#CPViolation #DayAndNight #MCEscher #ParticlePhysics
