CERN Accelerating science

LHC

LHC experiments restart

The LHC restarted this summer, after a period of upgrades (LS2) and is gearing up to probe new realms of physics during a third run, which will be its most powerful yet. Run 3 of the LHC will feature higher-energy particle beams and higher collision…

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Shaping the future of particle physics

*/ /*-->*/ Τhe ongoing update of the European Strategy for Particle Physics aims to identify the potential opportunities and challenges of the proposed research programme through an inclusive and evidence-driven process. Discussions focus on the…

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Exploring the Lifetime Frontier at the LHC and Beyond

By any reasonable measure, the first ten years of the LHC have been an unmitigated success.  But are we exploring everywhere in our data?  The overwhelming majority of the searches for particles beyond the Standard Model (BSM) conducted at ATLAS and…

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Particle colliders join the quest for dark energy.

The birth of a new science The beginning of the twentieth century was marked by two of the greatest scientific discoveries: quantum mechanics and the theory of relativity, which became the driving forces behind an array of new scientific…

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Axion-like particle searches at the LHC

The Standard Model (SM) of Particle Physics is plagued by some longstanding conceptual and practical questions, and we have to go beyond the Standard Model to address them. A guiding principle of the Standard Model is that we should expect to see…

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LHC's upgrade takes shape

A ground-breaking ceremony was held on the 15th of June, to celebrate the start of civil engineering work for a major upgrade to the LHC . When completed in 2026, the HL-LHC will produce a five to seven times higher rate of proton-proton collisions…

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A special Xenon run for NA61/SHINE

Earlier in October, the Large Hadron Collider had a special test run of colliding xenon nuclei; a new flavour compared to the standard proton and lead collisions foreseen in the LHC experimental programme. Xenon collisions were requested by NA61, a…

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Colliding photons at the LHC!

The interaction of photons with matter such as Compton and Thompson scattering are well-known at higher photon energies. What about the scattering events between photons? In classical Maxwell theory photons do not interact. In contrast, in quantum…

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The Lifetime Frontier

It bear repeating that there must be physics Beyond the Standard Model (BSM). The triumphant discovery of the 125 GeV Higgs Boson sharpens the Hierarch Problem, with naturalness suggesting new particles at the TeV scale. A multitude of interlocking…

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Hunting for right-handed neutrinos: the new game in town

What lies behind and beyond the Standard Model is an obsession of particle physicists today. The neutrino physicists have a somewhat different palette of opinions as compared to their colleagues working at the high energy frontier. They consider…

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