The LHC tunnel at point 1 (Image: CERN)
Large Hadron Collider restarts
The world’s largest and most powerful particle accelerator has restarted after a break of more than three years for maintenance, consolidation and upgrade work. Today, 22 April, at 12:16 CEST, two beams of protons circulated in opposite directions around the Large Hadron Collider’s 27-kilometre ring at their injection energy of 450 billion electronvolts (450 GeV).
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The PIP-II project received CD-3 approval from the U.S. Department of Energy. When complete, it will provide more powerful beams of protons to Fermilab experiments. This rendering shows the site of the PIP-II complex on the Fermilab campus. Image: Fermilab
New accelerator at Fermilab approved for construction start
The U.S. Department of Energy has formally approved the start of full construction for the PIP-II project, an essential upgrade to the accelerator complex at Fermi National Accelerator Laboratory. The heart of the project is a powerful new superconducting linear accelerator that will enable the world’s most intense high-energy neutrino beam.
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A close-up view of a muon neutrino argon interaction within an event display at MicroBooNE, one out of 11,528 events used to extract energy-dependent muon neutrino argon interaction cross sections.
Breakthrough MicroBooNE Measurement Elucidates Neutrino Interactions
Physicists studying ghost-like particles called neutrinos from the international MicroBooNE collaboration have reported a first-of-its-kind measurement: a comprehensive set of the energy-dependent neutrino-argon interaction cross sections. This measurement marks an important step towards achieving the scientific goals of next-generation of neutrino experiments—namely, the Deep Underground Neutrino Experiment (DUNE).
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CERN Director-General Fabiola Gianotti and Brazilian Minister for Science, Technology and Innovation Marcos Pontes (Image: CERN)
Brazil to become an Associate Member State of CERN
On 3 March 2022, CERN Director-General Fabiola Gianotti and Brazilian Minister for Science, Technology and Innovation Marcos Pontes signed an agreement admitting Brazil as an Associate Member State of CERN
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ICFA Statement Regarding Higgs Factory Development and the ILC
The International Committee for Future Accelerators (ICFA) recently met to review global progress and plans in high-energy physics. ICFA reconfirms the international consensus on the importance of a Higgs Factory as the highest priority for realizing the scientific goals of particle physics. This view has only strengthened over time based on results from the world’s particle physics facilities.
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The Collider Detector at Fermilab recorded high-energy particle collisions produced by the Tevatron collider from 1985 to 2011. About 400 scientists at 54 institutions in 23 countries are still working on the wealth of data collected by the experiment.
CDF collaboration at Fermilab announces most precise ever measurement of W boson mass to be in tension with the Standard Model
Scientists of the Collider Detector at Fermilab collaboration have achieved the most precise measurement to date of the mass of the W boson, one of nature’s force-carrying particles. The measured value shows tension with the value expected based on the Standard Model of particle physics.
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A proton–proton collision event recorded by the LHCb detector, showing the track followed by an antiproton formed in the collision (Image: CERN)
LHCb reveals secret of antimatter creation in cosmic collisions
At the Quark Matter conference today and at the recent Rencontres de Moriond conference, the LHCb collaboration presented an analysis of particle collisions at the Large Hadron Collider (LHC) that may help determine whether or not any antimatter seen by experiments in space originates from the dark matter that holds galaxies such as the Milky Way together.
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CUORE scientists Dr. Paolo Gorla (LNGS, left) and Dr. Lucia Canonica (MIT, right) inspect the CUORE cryogenic systems. (Credit: Yury Suvorov and the CUORE Collaboration)
CUORE team places new limits on the bizarre behavior of neutrinos
In a laboratory under a mountain, physicists are using crystals far colder than frozen air to study ghostly particles, hoping to learn secrets from the beginning of the universe. Researchers at the Cryogenic Underground Observatory for Rare Events (CUORE) announced this week that they had placed some of the most stringent limits yet on the strange possibility that the neutrino is its own antiparticle.
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Lia Merminga has been named director of Fermi National Accelerator Laboratory, the nation’s premier particle physics and accelerator laboratory, effective April 18. Merminga will be the lab’s seventh director and the first woman to hold the position at Fermilab. Photo: Lynn Johnson, Fermilab
Lia Merminga appointed director of Fermi National Accelerator Laboratory
Lia Merminga, an internationally renowned physicist and scientific leader, has been appointed to lead Fermi National Accelerator Laboratory, effective April 18.
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Zhoudunming Tu explains the science of exploring gluon distributions and deuteron breakup in ultra-peripheral collisions of deuterons and gold ions while speaking with a group of students at Princeton University. Credit: Yingshi Peng, Princeton
Physicists 'Shine' Light on Inner Details and Breakup of Simple Nucleus
Scientists have found a new way to "see" inside the simplest atomic nuclei to better understand the "glue" that holds the building blocks of matter together. The results, just published in Physical Review Letters, come from collisions of photons (particles of light) with deuterons, the simplest atomic nuclei (made of just one proton bound to one neutron).
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