Patrick Koppenburg 🐧
@koppenburg.ch
Nikhef physicist at LHCb Experiment at CERN. Exotic Hadrons, European strategy for particle physics, Sustainable Accelerators. Chair of CERN users committee ACCU.
🐧📷🎓💻💫.
Born at 327.55 ppm CO₂. Président du PVL La Côte. 🟢🔵
🐧📷🎓💻💫.
Born at 327.55 ppm CO₂. Président du PVL La Côte. 🟢🔵
ps: You may want to read Mary K. Gaillard's obituary www.nytimes.com/2025/07/31/s...
Mary Gaillard, Who Broke a Ceiling in Subatomic Research, Dies at 86
Overcoming discrimination in a mostly male preserve, she did groundbreaking work that showed experimentalist physicists where and how to look for new particles.
www.nytimes.com
November 7, 2025 at 8:43 AM
ps: You may want to read Mary K. Gaillard's obituary www.nytimes.com/2025/07/31/s...
Indeed the observation of the Higgs boson was announced 37 years later, on July 4 2012. John Ellis was in the room. I don't know where Gaillard and Nanopoulos were at that time. /end
November 7, 2025 at 8:43 AM
Indeed the observation of the Higgs boson was announced 37 years later, on July 4 2012. John Ellis was in the room. I don't know where Gaillard and Nanopoulos were at that time. /end
They ended the paper with a note of caution: Finding the Higgs boson will be hard.
November 7, 2025 at 8:42 AM
They ended the paper with a note of caution: Finding the Higgs boson will be hard.
At that times the heaviest known particles were charm bound states, like the ψ(2S), at masses around 4 GeV. Everything above was "new particles", including the now well known b quark, and the W and Z bosons.
November 7, 2025 at 8:42 AM
At that times the heaviest known particles were charm bound states, like the ψ(2S), at masses around 4 GeV. Everything above was "new particles", including the now well known b quark, and the W and Z bosons.
At that time nobody knew what the mass of the Higgs boson would be. It could be anything. So they computed the possible decay modes and their rates depending on the Higgs mass.
They didn't dare going beyond a mass of 100 GeV.
They didn't dare going beyond a mass of 100 GeV.
November 7, 2025 at 8:42 AM
At that time nobody knew what the mass of the Higgs boson would be. It could be anything. So they computed the possible decay modes and their rates depending on the Higgs mass.
They didn't dare going beyond a mass of 100 GeV.
They didn't dare going beyond a mass of 100 GeV.
A slightly updated version (with improved electroweak fits) is now on #arxiv arxiv.org/abs/2511.03883
Physics Briefing Book: Input for the 2026 update of the European Strategy for Particle Physics
The European Strategy for Particle Physics (ESPP) reflects the vision and presents concrete plans of the European particle physics community for advancing human knowledge in fundamental physics. The E...
arxiv.org
November 7, 2025 at 8:06 AM
A slightly updated version (with improved electroweak fits) is now on #arxiv arxiv.org/abs/2511.03883
Do you transform like a vector?
November 6, 2025 at 4:30 PM
Do you transform like a vector?
Nein, Nikon DSLR. Ich hab kein iPhone 🤷♂️
November 6, 2025 at 1:36 PM
Nein, Nikon DSLR. Ich hab kein iPhone 🤷♂️
Mond ist auch für eine gute Kamera schwierig. Es ist ein Tageslicht Bild (auf dem Mond ist es hell) im Dunkeln. Ich brauche immer Handeinstellungen.
November 6, 2025 at 11:15 AM
Mond ist auch für eine gute Kamera schwierig. Es ist ein Tageslicht Bild (auf dem Mond ist es hell) im Dunkeln. Ich brauche immer Handeinstellungen.
The 40 MHz input rate of the Large Hadron Collider would like a word
November 6, 2025 at 6:41 AM
The 40 MHz input rate of the Large Hadron Collider would like a word
Oui mais ça c'était vers 2006 quand il n'y avait que l'aimant. Maintenant on voit surtout les structures de support.
November 5, 2025 at 8:20 PM
Oui mais ça c'était vers 2006 quand il n'y avait que l'aimant. Maintenant on voit surtout les structures de support.
Ils sont chauffés par mon expérience, @lhcb.bsky.social , mais l'image montre @cmsexperiment.bsky.social à Cessy 😂. Faut dire que c'est la plus photogénique.
November 5, 2025 at 7:48 PM
Ils sont chauffés par mon expérience, @lhcb.bsky.social , mais l'image montre @cmsexperiment.bsky.social à Cessy 😂. Faut dire que c'est la plus photogénique.
I sympathise. And realise how lucky I am to live in my CERN bubble.
November 2, 2025 at 9:41 AM
I sympathise. And realise how lucky I am to live in my CERN bubble.
Aren't reviewers usually asked if they agree to see the manuscript again? I occasionally say no, for various reasons related to the paper.
October 31, 2025 at 9:44 AM
Aren't reviewers usually asked if they agree to see the manuscript again? I occasionally say no, for various reasons related to the paper.
Some would say `not even wrong` 😅
October 30, 2025 at 5:04 PM
Some would say `not even wrong` 😅