The international MicroBooNE experiment uses a 170-ton detector placed in Fermilab’s neutrino beam. The experiment studies neutrino interactions and has found no hint of a theorized fourth neutrino called the sterile neutrino. Photo: Reidar Hahn, Fermilab.
MicroBooNE experiment’s first results show no hint of a sterile neutrino
New results from the MicroBooNE experiment at the U.S. Department of Energy’s Fermi National Accelerator Laboratory deal a blow to a theoretical particle known as the sterile neutrino. For more than two decades, this proposed fourth neutrino has remained a promising explanation for anomalies seen in earlier physics experiments. Finding a new particle would be a major discovery and a radical shift in our understanding of the universe.
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“Ask me anything” features panel of dark matter experts
In a Universe filled with the light from our sun and distant stars, it is difficult to conceive of it as mostly dark. When we look around our world and into space, we see enormous variety—trees, birds, planets, asteroids and stars. This visible matter accounts for about 15 percent of all the matter in the Universe. The rest is called dark matter. Although it doesn’t interact with light and may interact weakly with normal matter, scientists believe it exists because of its gravitational effects in the Universe. Think of dark matter as an enormous iceberg floating in the ocean—what you see is a mere fraction of what lies beneath the water.
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The picture is a modified variant of the original Veronika McQuade's computer centre shot (Image: CERN)
CERN Quantum Technology Initiative unveils strategic roadmap shaping CERN’s role in next quantum revolution
The CERN Quantum Technology Initiative (CERN QTI) reaches its next milestone today, with the unveiling of a first roadmap defining its medium- and long-term quantum research programme. The roadmap details the CERN QTI goals and strategy, and outlines its governing structure and the composition of its international advisory board, as well as the activities to support the exchange of knowledge and innovation with the high-energy physics community and beyond in the extensive field of quantum technologies. Through CERN QTI, CERN is disseminating its enabling technologies – such as quantum state sensors, time synchronisation protocols, and many more from the cryogenics, electronics, quantum theory and computing domains – to accelerate the development of quantum technologies.
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The PHENIX detector at the Relativistic Heavy Ion Collider at Brookhaven National Laboratory
Direct Photons Offer Glimpse of Gluons' Dynamic Motion
Scientists seeking to explore the teeming microcosm of quarks and gluons inside protons and neutrons report new data delivered by particles of light. The light particles, or photons, come directly from interactions of a quark in one proton colliding with a gluon in another at the Relativistic Heavy Ion Collider (RHIC). By tracking these “direct photons,” members of RHIC’s PHENIX Collaboration say they are getting a glimpse—albeit a blurry one—of gluons’ transverse motion within the building blocks of atomic nuclei.
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Dr. Masashi Hazumi (left) and Dr. Masanori Yamauchi (right)
KEK will launch a new world premier international research center
KEK is awarded to host a new world premier international research center for quantum-field measurement systems. It is the 14th World Premier International Research Center Initiative (WPI) promoted by the Ministry of Education, Culture, Sports, Science and Technology (MEXT) such as Kavli IPMU.
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Dark Matter Day aims to shed light on the missing matter of the universe
We live in a universe we know surprisingly little about. The normal matter we can see—like people, planets, stars, and even peanut butter—accounts for an estimated 20 percent of all the matter in the universe. The remaining approximately 80 percent is called dark matter. We can’t see it and we don’t know what is, yet this ubiquitous substance whizzes through the universe—and us—all the time. So how do we know dark matter exists?
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Professor Eliezer Rabinovici, 24th President of the CERN Council (Image: CERN)
Professor Eliezer Rabinovici elected as next President of the CERN Council
The CERN Council has today announced the election of Professor Eliezer Rabinovici as its 24th President, for a period of one year, renewable twice, with a mandate starting on 1 January 2022. He will be taking over from Dr Ursula Bassler, who concludes her three-year term at the end of December 2021.
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Physicists compared collisions of two different sets of isobars, which are ions that have the same overall mass but different numbers of protons—zirconium (96Zr), with 40 protons, and ruthenium (96Ru) with 44 protons. The higher proton number (and thus electric charge) in ruthenium should generate a stronger magnetic field during collisions than zirconium (indicated by size of gray arrows). Scientists expected the stronger magnetic field of ruthenium collisions to result in greater separation of charged particles emerging from those collisions than seen in zirconium collisions.
Results from Search for 'Chiral Magnetic Effect' at RHIC
Physicists from the STAR Collaboration of the Relativistic Heavy Ion Collider (RHIC), a U.S. Department of Energy (DOE) Office of Science user facility for nuclear physics research at DOE’s Brookhaven National Laboratory, presented long-awaited results from a “blind analysis” of how the strength of the magnetic field generated in certain collisions affects the particles streaming out. The experiment was designed to look for evidence of a predicted physics phenomenon known as the “chiral magnetic effect.” It didn’t come out as initially predicted.
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Dr.sc.ing. Torims, representative of Latvia at CERN, Dr Muizniece, Minister for Eduction and Science of the Republic of Latvia, Dr Gianotti, Director-General of CERN, H.E. Mr Hasans, Ambassador Extraordinary and Plenipotentiary, Permanent Representative of the Republic of Latvia to the UNO and other international organisations in Geneva (Image: CERN)
Latvia becomes Associate Member State of CERN
Today, the Republic of Latvia became an Associate Member State of CERN, following official notification that the country has completed its internal approval procedures in respect of the Agreement granting it that status and has acceded to the Protocol on Privileges and Immunities of the Organization.
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Making matter from light: Two gold (Au) ions (red) move in opposite direction at 99.995% of the speed of light (v, for velocity, = approximately c, the speed of light). As the ions pass one another without colliding, two photons (γ) from the electromagnetic cloud surrounding the ions can interact with each other to create a matter-antimatter pair: an electron (e-) and positron (e+).
Collisions of Light Produce Matter/Antimatter from Pure Energy
Scientists studying particle collisions at the Relativistic Heavy Ion Collider (RHIC)—a U.S. Department of Energy Office of Science user facility for nuclear physics research at DOE’s Brookhaven National Laboratory—have produced definitive evidence for two physics phenomena predicted more than 80 years ago. The results were derived from a detailed analysis of more than 6,000 pairs of electrons and positrons produced in glancing particle collisions at RHIC and are published in Physical Review Letters.
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