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Antihydrogen beams

Author: Yasunori Yamazaki; Michael Doser; Patrice Pérez; Institute of Physics (Great Britain),
Publisher: Bristol [England] (Temple Circus, Temple Way, Bristol BS1 6HG, UK) : IOP Publishing, [2018]
Series: Physics world discovery.
Edition/Format:   eBook : Document : EnglishView all editions and formats
Summary:
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  Read more...
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Genre/Form: Electronic books
Material Type: Document, Internet resource
Document Type: Internet Resource, Computer File
All Authors / Contributors: Yasunori Yamazaki; Michael Doser; Patrice Pérez; Institute of Physics (Great Britain),
ISBN: 9780750320214 0750320214
OCLC Number: 1030775299
Notes: "Version: 20180301"--Title page verso.
Title from PDF title page (viewed on April 5, 2018).
Target Audience: Final-year undergraduates, new PhD students and early-career scientists.
Description: 1 online resource (1 PDF (ix, 17 pages)) : color illustrations
Details: Mode of access: World Wide Web.; System requirements: Adobe Acrobat Reader, EPUB reader, or Kindle reader.
Contents: 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.
Series Title: Physics world discovery.
Responsibility: Yasunori Yamazaki, Michael Doser, Patrice Pérez.

Abstract:

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.

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