September 2020 - November 2020
Closing the gap between beam dump and colliders ALPs searches with NA64
The axion was postulated to provide a solution to the "strong CP" problem. This pseudo-scalar particle emerges as a consequence of the breaking of the Peccei-Quinn (PQ) symmetry [1,2,3] (link to EP article on Axions). Typically, models of QCD axions…
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A timeline of the EP newsletter
Since its establishment, CERN's Experimental Physics department (EP) produces cutting-edge research supporting the activities of the laboratory and serving the international particle physics community. Since its establishment, EP continuously…
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A mobile antiproton reservoir for precision measurements
The BASE collaboration has performed the most precise measurements of the fundamental properties of the antiproton in order to test CPT invariance as fundamental symmetry of the Standard Model [1, 2] and to search for dark matter-antimatter…
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DT group publishes annual report
The mandate of the Detector Technologies (DT) group in the Experimental Physics department covers development, construction, operation and maintenance of particle detectors for the experiments at CERN. Recently, the group published its 2019…
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Exploring the physics opportunities of FCCs
The 4th FCC Physics and Experiments workshop is part of the FCC Innovation Study Kickoff event, which will address the mandate issued by the update of the European Strategy for Particle Physics: "Europe, together with its international partners,…
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NA62 experiment at CERN reports first evidence for ultra-rare process sensitive to new physics
The CERN NA62 collaboration presented at the ICHEP 2020 conference the first significant experimental evidence for the ultra-rare decay of the charged kaon into a charged pion and two neutrinos (K+ -> π+νν). The decay process is very sensitive to…
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Pinpointing the structure of the SnV centre in diamond using emission channelling at ISOLDE
Diamond – beyond its allure as a jewel – exhibits an array of unique physical characteristics such as its hardness, the highest room thermal conductivity of any material (while being electrically insulating when undoped); it can also be doped to…
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CERN experiments find first evidence for rare Higgs boson decay
The strength of the interaction between the Higgs field and a particle determines the mass it obtains from the Higgs and it is a mystery why the interaction strength is different for different particles. This puzzle is exacerbated as the leptons,…
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