Opinion
CERNOpinion

CERN management structure for 2026–2030, part 3

Since my last message in June, I’m happy to say that my nominations for department heads have now been approved at the September session of the CERN Council. Once again, I’d like to thank the CERN ...
CERN

14 October: Annual Information Meeting of the Pension Fund

All members and beneficiaries of the Pension Fund are invited to attend the Annual Information Meeting, which will take place: on Tuesday, 14 October 2025 from 2.30 p.m. to 3.30 p.m. in the Council ...
CERN

Preserving particle physics data

About a billion pairs of particles collide every second within the Large Hadron Collider (LHC). With them, a petabyte of collision data floods the detectors and pours through highly selective filters, ...
CERN

CERN Health Insurance Scheme (CHIS) – UNIQA office moving back to the Main Building

From 1 October 2025, the UNIQA office will be located back in the Main Building in the newly refurbished CERN Community Support Centre (CCSC). Due to the move, the UNIQA office will be exceptionally ...
CERN

First measurement of the energy and Mandelstam-t dependence of incoherent J/ψ photonuclear production with ALICE

Quantum chromodynamics predicts that at sufficiently high energies the gluon density inside hadrons enters a regime, known as gluon saturation, where gluon splitting and recombination reach a dynamic ...
CERN

The Large Electron-Positron Collider

LEP – the largest electron-positron accelerator ever built – was dismantled in 2000. Its 27-kilometre tunnel now hosts the LHC With its 27-kilometre circumference, the Large Electron-Positron (LEP) ...
CERN

Witten Effect and Polarizability of the Magnetic Monopole

Using quantum arguments, Witten proposed that a magnetic monopole acquires electric charge in a theta vacuum. In a formulation where the theta vacua of a gauge theory are described by the vacua of a ...
CERN

Structure de direction du CERN pour les années 2026–2030, troisième partie

Pour faire suite à mon message de juin, j’ai le plaisir d’annoncer que mes propositions pour les postes de chef de département ont été approuvées à la session de septembre du Conseil du CERN. Je voudr ...
CERN

Nouvelles de la session du Conseil de septembre 2025

Le Conseil et ses organes subsidiaires, le Comité des directives scientifiques et le Comité des finances, se sont réunis du 22 au 26 septembre pour prendre connaissance et débattre des dernières évolu ...
CERN

14 octobre : Réunion d’information annuelle de la Caisse de pensions

Tous les membres et bénéficiaires de la Caisse de pensions sont invités à la réunion d’information annuelle qui se tiendra le mardi 14 octobre 2025 de 14h30 à 15h30 dans la Salle du Conseil (503-1-001 ...
CERN

Des collisions d’ions légers sondent la matière primordiale

Cet été, le Grand collisionneur de hadrons (LHC) s’est offert une bouffée d’air frais. Le grand anneau de 27 km, faisant ...