Maximilian Attems

Nieuw kunstwerk bij de ingang van het @nikhef.bsky.social. Gisteren onthuld door de kunstenaar, Jop Vissers Vorstenbosch

Successful expansion of the KM3NeT underwater neutrino telescope - Nikhef With a successful operation on the high seas last week, the French segment of the KM3NeT neutrino telescope was further expanded to 33 detector lines. A total of...

With a successful operation on the high seas last week, the French segment of the KM3NeT neutrino telescope was further expanded to 33 detector lines. www.nikhef.nl/en/news/succ... @km3net.bsky.social

InitialStages conference in Taipei strikes with new light ion data from O-O and Ne-Ne collisions

#LHC #CERN #initialstagestw2025

#GW230814 is such a beautifully loud signal. An signal-to-noise ration of 42 using just one detector! That is louder than GW170817 observed with three. It is amazing the progress the detectors are making, and the science that these measurements can bring

🧪⚛️☄️🔭

new luminosity records at #LHC proton proton collisions both per 24 hours and 7 day rate:

Petra Cini, composer and pianist, gave a special @nikhef.bsky.social theory seminar on musical representations: violence, purity and mathematics

#MusicalMetaphors #GroupTheory #SO3

A view of the remnants of a supernova explosion, featuring two concentric rings of ejected material. The outer ring glows in warm orange tones, while the inner ring is blue. The object is set against a dark backdrop sprinkled with distant stars.

💥💥 Double detonation! 

For the first time, astronomers have obtained visual evidence that a star met its end by detonating twice.

The fingerprint that points to this mechanism is represented by two separate shells of calcium.  

Read more: https://www.eso.org/public/news/eso2511/

🔭 🧪 ☄️ 1/

Great news at #LHC @CERN with proton-Oxygen and O-O collisions happening:
home.web.cern.ch/news/news/ac...

Licia Verde with her Jocelyn Bell Burnell medal.

#EAS2025

The European Space Agency 1975-2025 anniversary logo, white text on deep space blue background, large five and zero figures.

🎉 We’re celebrating our 50th birthday on 30 May! For half a century, we’ve been serving Europe, inspiring its citizens and exploring the cosmos. Check out our #50YearsOfESA web site for stories, archive images and details of events coming up in the year.

🔗 esa.int/About_Us/50_...

On June 17th, 2025 @nikhef.bsky.social celebrates its 50th anniversary 🥳 

In 1998 when the accelerator MEA-AmPS stopped the sections K&H were integrated. The institute name changed to: National Institute for Subatomic Physics.
NIKHEF will built at DESY detectors for the ZEUS & HERMES experiments.

💣 The Muon g-2 theory initiative dropped their update. Bottom line: the g-2 anomaly is gone. arxiv.org/abs/2505.21476

🧪⚛️

Trump Has Cut Science Funding to Its Lowest Level in Decades (Gift Article) The lag in funding extends far beyond D.E.I. initiatives, affecting almost every area of science: chemistry, computing, engineering, materials and more.

Devastating news for science funding 🧪

Physics funding in particular is down 85% ⚛️

Please consider calling your representatives if you haven't already

www.nytimes.com/interactive/...

Jets, particle sprays coming from quarks and gluons, can't easily pass through the blob that is the quark-gluon plasma, a phenomenon called "jet quenching". This #CMSPaper investigates if that also happens with an alternative method where the angles between two jets are used arxiv.org/abs/2504.08507

A graphic for the Marie Skłodowska-Curie Actions (MSCA), showing a historical portrait of Marie Skłodowska-Curie overlaid with an image of four young researchers walking down a hallway. The European Commission logo is in the top left. Text reads: "Marie Skłodowska-Curie Actions – €404.3 million to support postdoctoral researchers”

Choose Science. Choose Europe.

A new Marie Skłodowska-Curie Actions Postdoctoral Fellowships 2025 call is now open.

With a budget of €404.3 million, it will support around 1,650 researchers from Europe and beyond.

Apply by 10 September → europa.eu/!fBTMgF

Jets, particle sprays coming from quarks and gluons, can't easily pass through the blob that is the quark-gluon plasma, a phenomenon called "jet quenching". This #CMSPaper investigates if that also happens with an alternative method where the angles between two jets are used arxiv.org/abs/2504.08507

Great to have the US push forward a muon collider.

In 20 years!? 😀

bsky.app/profile/simo...

Measurement of the branching fraction ratio Rk at large dilepton invariant mass arxiv.org/abs/2505.03483 - A test of lepton universality between muons and electrons using B⁺→K⁺ℓ⁺ℓ⁻ decays with the dilepton invariant-mass-squared region above 14.3 GeV²/c⁴ is consistent with the prediction of unity.

definition of delta R and change between the perturbative and non-perturbative calculation range for QCD (Quantum Chromodynamics, the physics theory of the strong nuclear force)

One of the problems with the standard model is that we use different mathematics for low-energy than for high-energy strong force calculations. The transition region is not so easy. #CMSPaper 1392 measures the transition region for the first time in LHC heavy ion collisions arxiv.org/abs/2503.19993

📣 We have beam in the tunnel 💫

Today, the Large Hadron Collider received the first particle beams of 2025. #BeamTime

The LHC experiment collaborations #AtCERN receive Breakthrough Prize

The prize is awarded to ALICE, ATLAS, CMS and LHCb, which unite thousands of researchers from more than 70 countries, and concerns the papers authored based on #LHCRun2 data up to July 2024.

Read more: home.cern/news/press-r...

KM3NeT detects the highest energy neutrino ever observed - Nikhef The KM3NeT Collaboration announces the detection from the abyss of the Mediterranean Sea of a cosmic neutrino with a record-breaking energy of about 220 PeV An extraordinary event...

KM3NeT detects the highest energy neutrino ever observed
The KM3NeT Collaboration announces the detection from the abyss of the Mediterranean Sea of a cosmic neutrino with a record-breaking energy of about 220 PeV
www.nikhef.nl/en/news/km3net-detects-the-highest-energy-neutrino-ever-observed

The CMS result with not an as heavy W boson as the experiment that prompted this interesting result using improved theory input.

Congratulations to Bob Wald for winning the Albert Einstein medal!

physicalsciences.uchicago.edu/news/article...

Happy International Day of Women and Girls in Science 🔬

On 11 February, we celebrate the important contributions of women to the STEM disciplines.

On this occasion, we asked six female scientists what science means to them: home.cern/news/news/cern/international-day-women-and-girls-science-2025

📢 Big news coming up!

🗓️ Tune into it on Wednesday 12th of Feb, at 16:50 CET to hear about some exciting KM3NeT results!

🔗 Details can be found on the website: www.km3net.org/km3net-webin...

Andreas Juettner @cern.bsky.social gives @nikhef.bsky.social theory seminar on "Exclusive or inclusive? The lattice might have the answer..."

#LatticeQCD #CKMmatrix #V_cb

76 new particles have been discovered at the LHC so far: the Higgs boson, 52 conventional hadrons and a bestiary of 23 exotic hadrons whose structure cannot reliably be explained or their existence predicted.

If you're sketchy about the 23...

cerncourier.com/a/a-bestiary... @koppenburg.ch

signal is us based.. : |

White Paper on Software Infrastructure for Advanced Nuclear Physics Computing This White Paper documents the discussion and consensus conclusions of the workshop "Software Infrastructure for Advanced Nuclear Physics Computing" (SANPC 24), which was held at Jefferson Lab on June...

Check out our white paper on software infrastructure for advancing nuclear physics computing! We welcome input from the community until February 14th! arxiv.org/abs/2501.00905