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  Why a splitting in the final state cannot explain the GSI-Oscillations

Merle, A. (2009). Why a splitting in the final state cannot explain the GSI-Oscillations. Physical Review C, 80(5): 054616, pp. 1-9. doi:10.1103/PhysRevC.80.054616.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000E-F95A-0 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000E-F95B-E
Genre: Journal Article

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0907.3554 (Preprint), 219KB
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 Creators:
Merle, A.1, Author              
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1Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society, escidoc:904549              

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Free keywords: High Energy Physics - Phenomenology, hep-ph
 Abstract: In this paper, I give a pedagogical discussion of the GSI anomaly. Using two different formulations, namely the intuitive Quantum Field Theory language of the second quantized picture as well as the language of amplitudes, I clear up the analogies and differences between the GSI anomaly and other processes (the Double Slit experiment using photons, $e^+ e^- \to \mu^+ \mu^-$ scattering, and charged pion decay). In both formulations, the conclusion is reached that the decay rate measured at GSI cannot oscillate if only Standard Model physics is involved and the initial hydrogen-like ion is no coherent superposition of more than one state (in case there is no new, yet unknown, mechanism at work). Furthermore, a discussion of the Quantum Beat phenomenon will be given, which is often assumed to be able to cause the observed oscillations. This is, however, not possible for a splitting in the final state only.

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 Dates: 2009-07-212009-11-30
 Publication Status: Published online
 Pages: 10 pages, 3 figures; matches published version (except for some stylistic ambiguities)
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 Rev. Method: -
 Identifiers: arXiv: 0907.3554
DOI: 10.1103/PhysRevC.80.054616
URI: http://arxiv.org/abs/0907.3554
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Title: Physical Review C
Source Genre: Journal
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Publ. Info: New York, NY : Published for the American Physical Society by the American Institute of Physics
Pages: - Volume / Issue: 80 (5) Sequence Number: 054616 Start / End Page: 1 - 9 Identifier: ISSN: 0556-2813
CoNE: http://pubman.mpdl.mpg.de/cone/journals/resource/954925225009