CAST Public Outreach

CAST and Axions in the News

Axions at the Virtual Institue for Astroparticle Physics - VIA

November 28, 2008 - CAST - Hunting Axions from Sun - Axions play an important role as Dark Matter candidate and are the most promising solution to the strong CP-problem. Markus Kuster presents a lecture on experimental axion searches and CAST at the Virtual Institute for Astroparticle Physics - VIA.

Lecture (follow the link and klick on 'Previous/Lectures')

Axions in the CERN courier

March 20, 2008 - The enigmatic Sun: a crucible for new physics - The nearest star to Earth harbours a surprising number of unexplained phenomena, despite its proximity. Could astroparticle physics, and in particular particles like the charismatic axion, hold the key? Konstantin Zioutas believes that they could.

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3rd Joint ILIAS-CERN-DESY Axion-WIMPs Training Workshop

November 20, 2007 - Fundamental physics re-explored in Patras - More than 50 participants from around the world and from experiment and theory alike met in Patras for the 3rd Joint ILIAS-CER-DESY Axion-WIMPs training workshop on 19.-25 June. Josef Jochum of the University of Tübingen and Axel Lindner of DESY organized the meeting with Konstantin Zioutas of the University of Patras and CERN. It provided stimulating talks with new results and much discussion.

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September, 2007 - Perfecting the Solar axion hunt at CERN - CAST is a CERN Astroparticle physics experiment, what searches for axions, particles that according to theory are abundantly produced in the sun's core. Axions were originally proposed to solve the strong CP problem, a serious problem in the prevailing theoretical framework of Particle Physics but were soon recognized to be one of the most important dark matter candidate particles. So far this new particle remains elusive, with all efforts to detect it producing null results.

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CAST in Welt der Physik

August 27, 2007 - CAST - Axions from Sun's core - Since 25 years physicists are searching for a hypothetical particle named axion. On the one hand as a relict of the big bang it could explain a fraction of the yet not identified dark matter, on the other hand it would solve a fundamental problem of the Standard Model of particle physics. The experiment CAST at CERN searches for axions, which are produced in the core of Sun.

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Axions in the CERN courier

March 02, 2007 - Axions create excitement and doubt at Princeton - The lightweight axion is one of the major candidates for dark matter in the universe, along with weakly interacting massive particles. It originally arrived on the scene about 30 years ago to explain CP conservation in QCD, but there has never been as much theoretical and experimental activity in axion physics as there is today. Last year, the PVLAS collaboration at INFN Legnaro reported an intriguing result, which might indicate the detection of an axion-like particle (ALP) and which has triggered many further theoretical and experimental activities worldwide. The international workshop Axions at the Institute for Advanced Study, held at Princeton on 20-22 October 2006, brought together theorists and experimentalists to discuss current understanding and plans for future experiments. The well organized workshop and the unique atmosphere at Princeton provided ideal conditions for fruitful discussions.

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Axions in the FAZ (a german newspaper)

February 18, 2007 - Was this an axion maybe? - Originally "Axion" was a detergent label. "I saw this at the end of the 70's and thought: That would be a nice name for a particle!" the Nobel prize laureate Frank Wilczek remembers. At that time he studied an idea of his colleagues Roberto Peccei and Helen Quinn, which could solve a problem in the theory of the "strong force". He recognized, that therefore the existence of a particle would result - and immediately had a name for it...

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CAST in the CERN Courier

July, 2006 - Let there be Axions - One of the biggest mysteries of science is the nature of dark matter, which first became apparent as astronomer Fritz Zwicky's "dunkle Materie" in 1933. The two leading particle candidates for this "missing matter" are weakly interacting massive particles (WIMPs) and axions - hypothesized uncharged particles that have a very small but unknown mass, which barely interact with other particles. To bring together the widespread axion community, the Integrated Large Infrastructure for Astroparticle Science (ILIAS), the CERN Axion Solar Telescope (CAST) collaboration and CERN have organized a series of training workshops on current axion research, including open discussions between theorists and experimentalists. The first two of these were held at CERN in November and at the University of Patras in Greece, in May. This article highlights the presentations at both meetings ...

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CAST in Science

April 15, 2005 - Magnetic Scope Angles for Axions - After 2 years of staring at the sun, an unconventional 'telescope' made from a leftover magnet has returned its first results. Although it hasn't yet found the quarry it was designed to spot - a particle that might or might not exist - physicists say the CERN Axion Solar Telescope (CAST) is beginning to glimpse uncharted terretory.

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CAST in sceneXX

April 14, 2005 - On the trail of relicts of Big Bang - A scientific team looks for Axions within the international experiment CAST (CERN Axion Solar Telescope) at the European research center CERN. These theoretical predicted and electric neutral particles could have survived, as relicts of the Big Bang, in the mysterious dark matter. This matter helps Scientists to explain mass distributions and movements in the universe.

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MPG Press Release

April 14, 2005 - In search of relicts of Big Bang - Scientists of the Max-Planck-Institutes for Physics in Munich and for Extraterrestrial Physics in Garching look for Axions within the international experiment CAST (CERN Axion Solar Telescope) at the European research center CERN. These theoretical predicted and electric neutral particles could have survived, as relicts of the Big Bang, in the mysterious dark matter. This matter helps Scientists to explain mass distributions and movements in the universe.

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CAST in Nature

April 14, 2005 - The elusive axion - An effect known as charge-parity violation is linked to the fact that the Universe contains far more matter than antimatter, and it is well documented in processes involving the so-called weak nuclear force, one of the four fundamental forces of nature. But it seems to be suppressed by the strong force, and this can be explained by postulating a hitherto undiscovered particle, the axion. Axions interact hardly at all with radiation or other matter, making them hot candidates to be the 'cold dark matter' that is thought to pervade the Universe.

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CAST in the CERN Weekly Bulletin

March, 2005 - CASTing light on dark matter particles - CERN's CAST collaboration recently released first results from its search for solar axions, a candidate dark matter particle. Though they haven't found any axions yet, they have done much to narrow the hunt.

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CAST in the CERN Courier

March, 2005 - CAST sheds some light on axions - The CERN Axion Solar Telescope (CAST) collaboration has released the first results from its search for the solar axion, a viable candidate for a dark-matter particle. The result from CAST's first year of operation, submitted to Physical Review Letters, does not show evidence for the axion but it narrows down the hunt for this elusive particle.

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CAST im Deutschen Fernsehen

December 12, 2004, 4 o'clock p.m., 3sat "HiTec" - The universe consists to 85% of matter, which eludes every known physical theory. Because one knows nothing about it, scientists have called it "Dark Matter". Actually nobody can tell what's going on with this matter, but it could be the key to the beginning of the Universe - and maybe the ignition spark of the future of modern sciences. If the secrets of Dark Matter have been disclosed the physical models will be on trail.

Dark Matter could consists of Axions. These are fundamental particles which are supposed to be lighter than WIMPS. In fact no interaction with normal matter is measurable due to its small mass. But if one cannot measure it, how does one proof its existence?

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CAST on PhysicsWeb

November 24, 2004 - An experiment built from components recycled from other experiments has put new limits on the properties of particles that might be the "dark matter" that makes up about 25% of the Universe. The CERN Axion Solar Telescope (CAST) was built to search for exotic particles called axions that might be produced inside the Sun. Although CAST did not see any axions, it improved the existing limit on the coupling between axions and photons, which is related to the mass of the hypothetical particles, by a factor of five for masses below 0.02 electron volts (hep-ex/0411033).

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CAST in the CERN Courier

April 2, 2001 - Solar telescope CASTs the net for solar axions - The CERN Solar Axion Telescope, CAST, aims to shed light on a 30-year-old riddle of particle physics by detecting axions originating from the15 million degree plasma in the Sun's core. Axions were proposed as an extension to the Standard Model of particle physics to explain why CP violation - a phenomenon linked to the dominance of matter over antimatter in the universe - is observed in weak but not strong interactions - the so-called strong-CP problem.

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CAST Collaboration Meeting, CERN
February, 22.-23. 2010

CAST Collaboration Meeting, CERN
February, 24. 2010

CAST in Wikipedia
The article on Wikipedia about CAST has been updated


University of Technology Darmstadt

Dr. Markus Kuster

+49 6151 16-2321
+49 6151 16-4321

Institut für Kernphysik

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Schlossgartenstraße 9
64289 Darmstadt

Max-Planck Institute for Physics

Dr. Rainer Kotthaus

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