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The delicate balance of lepton flavours

New ATLAS measurement of lepton flavour universality, a key feature of the Standard Model, in decays of the W boson is more precise than all previous measurements combined

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Physics
26 March, 2024
Physics
News
26 March, 2024

First observation of photons-to-taus in proton–proton collisions by CMS

Using the outstanding tracking capabilities of the CMS detector, the collaboration observed two photons producing two tau-leptons in proton–proton collisions

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Physics
25 March, 2024

Scientists use n_TOF to investigate how cerium is produced in the Universe

The CERN facility allowed scientists to see how this rare Earth metal is synthesised in stars. The results open up new questions about stellar nucleosynthesis and the chemical evolution of galaxies

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Physics
21 March, 2024

LHCb observes a new decay mode of the charmed beauty meson

The result has implications for future searches for rare beauty meson decays and for the interpretation of results from the Fermilab g-2 experiment

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Physics
04 March, 2024

AEgIS experiment paves the way for new set of antimatter studies by laser-cooling positronium

In cooling positronium with laser light for the first time, AEgIS may also have taken the first step towards a matter–antimatter system that emits laser-like gamma-ray light

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Physics
22 February, 2024

CMS collaboration explores how AI can be used to search for partner particles to the Higgs boson

This search uses computer vision techniques to look for collimated bursts of light, a potential signature of Higgs partner particles

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Physics
21 February, 2024

Hearing the sound of quark–gluon plasma

The CMS collaboration has measured the speed of sound in the quark–gluon plasma more precisely than ever before, offering new insights into this extremely hot state of matter

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Physics
16 February, 2024
Physics
News
16 February, 2024

The January/February issue of the CERN Courier is out

Announcement
Physics
15 January, 2024
Physics
Announcement
15 January, 2024

Charm is better than beauty at going with the flow

New ALICE measurements shed light on the dynamics of charm and beauty particles in quark–gluon plasma

News
Physics
15 December, 2023

CLOUD challenges current understanding of aerosol particle formation in polar and marine regions

The results imply that climate models are underestimating the formation rates of aerosol particles

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Physics
15 December, 2023