Please use this identifier to cite or link to this item: http://hdl.handle.net/2381/38060
Title: Measurement of the charged pion mass using X-ray spectroscopy of exotic atoms
Authors: Trassinelli, M.
Anagnostopoulos, D. F.
Borchert, G.
Dax, A.
Egger, J.-P.
Gotta, D.
Hennebach, M.
Indelicato, P.
Liu, Y.-W.
Manil, B.
Nelms, Nicholas H.
Simons, L. M.
Wells, A.
First Published: 15-Jun-2016
Publisher: Elsevier: SCOAP3
Citation: Physics Letters B, 2016, 759, pp. 583-588
Abstract: The 5g−4f5g−4f transitions in pionic nitrogen and muonic oxygen were measured simultaneously by using a gaseous nitrogen–oxygen mixture at 1.4 bar. Due to the precise knowledge of the muon mass the muonic line provides the energy calibration for the pionic transition. A value of (139.57077 ± 0.00018) MeV/c2 (± 1.3 ppm) is derived for the mass of the negatively charged pion, which is 4.2 ppm larger than the present world average.
DOI Link: 10.1016/j.physletb.2016.06.025
ISSN: 0370-2693
eISSN: 1873-2445
Links: http://www.sciencedirect.com/science/article/pii/S0370269316302787
http://hdl.handle.net/2381/38060
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © the authors, 2016. This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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