Antihydrogen beams /

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"Version: 20180301"--Title page verso.Includes bibliographical references (page 17).1. Introduction -- 2. Background -- Discovery of the concept of antimatter -- CPT symmetry -- Antihydrogen formation processes -- 3. Current directions -- Antihydrogen beam with a cusp trap via three-body recombination -- Preparation of cold antiprotons and cold positrons -- Pulsed antihydrogen beam : the AEgIS experiment -- Producing antihydrogen ion beams outside traps -- 4. Outlook.Why does our universe consist purely of matter, even though the same amount of antimatter and matter should have been produced at the moment of the Big Bang 13.8 billion years ago? One of the most potentially fruitful approaches to address the mystery is to study the properties of antihydrogen and antiprotons. Because they are both stable, we can in principle make measurement precision as high as we need to see differences between these antimatter systems and their matter counterparts, i.e. hydrogen and protons. This is the goal of cold antihydrogen research. To study a fundamental symmetry--charge, parity, and time reversal (CPT) symmetry--which should lead to identical spectra in hydrogen and antihydrogen, as well as the weak equivalence principle (WEP), cold antihydrogen research seeks any discrepancies between matter and antimatter, which might also offer clues to the missing antimatter mystery. Precision tests of CPT have already been carried out in other systems, but antihydrogen spectroscopy offers the hope of reaching even higher sensitivity to violations of CPT. Meanwhile, utilizing the Earth and antihydrogen atoms as an experimental system, the WEP predicts a gravitational interaction between matter and antimatter that is identical to that between any two matter objects. The WEP has been tested to very high precision for a range of material compositions, but no such precision test using antimatter has yet been carried out, offering hope of a telltale inconsistency between matter and antimatter. In this Discovery book, we invite you to visit the frontiers of cold antimatter research, focusing on new technologies to form beams of antihydrogen atoms and antihydrogen ions, and new ways of interrogating the properties of antimatter.Final-year undergraduates, new PhD students and early-career scientists.Mode of access: World Wide Web.System requirements: Adobe Acrobat Reader, EPUB reader, or Kindle reader.Yasunori Yamazaki was a professor at the University of Tokyo from 1993 to 2011. In 1997, he received a joint-appointment as RIKEN Chief Scientist, and then continued his career at RIKEN as Distinguished Senior Scientist from 2011 to 2015. He was also appointed as a deputy Executive Research Director of RIKEN from 2014 till today, and was the International Chairperson of the International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC) from 2005 to 2007. Yamazaki studies fundamental physics via antimatter and radiation biology via micro-irradiation on living cells. Awards have included a Fellowship of the American Physical Society in 2011, 15th Matsuo Foundation Hiroshi Takuma Memorial Award in 2011 and 52nd Toray Science and Technology Prize in 2012. Michael Doser is a research physicist at CERN, the European Organization for Nuclear Research, in Geneva, Switzerland. Since 1983, he has worked with antimatter, using it either as a tool (to study the strong interaction, in the framework of the ASTERIX (Antiproton Stop Experiment with tRigger on Initial X-rays) and Crystal Barrel experiments at CERN, and the electron-positron colliders at KEK in Japan and SLAC in the US) or as an object of study itself (formation of the first 'cold' antihydrogen atoms in the framework of the ATHENA (AnTiHydrogEN Apparatus) experiment). Since 2009, he has been the spokesperson of the AEgIS (Antihydrogen Experiment: Gravity, Interferometry, Spectroscopy) experiment at CERN whose goals include measurement of the gravitational interaction between matter and antimatter. In addition, he is Editor of Physics Letters B and Review of Particle Properties. Patrice P?erez is a particle physicist at CEA-Saclay, France, in the Institute for Research into the Fundamental Laws of the Universe. He participated in experiments at CERN on proton-proton collisions then high energy neutrinos, at KEK in Japan on electron-positron collisions in 1987 then at the former Large Electron-Positron Collider. Since 2002, P?erez has been exploring ways to employ particle physics techniques to study the fourth force, i.e. gravitation, at the particle level. For intense antihydrogen formation, he proposed in 2003 with a colleague to use a particle accelerator to produce one of its ingredients, the positron. After several studies in Yamazaki's laboratory at RIKEN, he founded the GBAR (Gravitational Behaviour of Antihydrogen at Rest) collaboration at CERN.Title from PDF title page (viewed on April 5, 2018).

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Publisher

: .,

Collation

1 online resource (ix, 17 pages) :color illustrations.

Language

English

ISBN/ISSN

9780750320214

Classification

530

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-

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Subject(s)

SCIENCE / Physics / Quantum Theory.
Symmetry (Physics)
Antimatter.

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Statement of Responsibility

Yasunori Yamazaki, Michael Doser, Patrice P?erez.

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