Measurement of the charged pion mass using a low-density target of light atoms
| Autor: | J.-P Egger, Martino Trassinelli, B Manil, M. Hennebach, Paul Indelicato, Alan A. Wells, Dimitrios F. Anagnostopoulos, N. Nelms, Yi-Wei Liu, L. M. Simons, Detlev Gotta, Andreas Dax, G. Borchert |
|---|---|
| Přispěvatelé: | Agrégats et surfaces sous excitations intenses (INSP-E10), Institut des Nanosciences de Paris (INSP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Department of Material Science and Engineering (DMSE), University of Ioannina, Institut für Kernphysik (KFA), Forschungszentrum Jülich GmbH | Centre de recherche de Juliers, Helmholtz-Gemeinschaft = Helmholtz Association-Helmholtz-Gemeinschaft = Helmholtz Association, Paul Scherrer Institute (PSI), Université de Neuchâtel (UNINE), Laboratoire Kastler Brossel (LKB (Jussieu)), Université Pierre et Marie Curie - Paris 6 (UPMC)-Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique des Lasers (LPL), Université Paris 13 (UP13)-Centre National de la Recherche Scientifique (CNRS), Department of Physics and Astronomy [Leicester], University of Leicester, Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Atomic Physics (physics.atom-ph)
QC1-999 FOS: Physical sciences chemistry.chemical_element Electron 7. Clean energy 01 natural sciences Spectral line Physics - Atomic Physics High Energy Physics - Experiment High Energy Physics - Experiment (hep-ex) Pion 0103 physical sciences Low density Radiative transfer [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] 010306 general physics 010303 astronomy & astrophysics Physics [PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph] Order (ring theory) Nitrogen chemistry Atomic physics Bar (unit) |
| Zdroj: | EPJ Web of Conferences EPJ Web of Conferences, EDP Sciences, 2016, 130, pp.01022. ⟨10.1051/epjconf/201613001022⟩ EPJ Web of Conferences, 2016, 130, pp.01022. ⟨10.1051/epjconf/201613001022⟩ EPJ Web of Conferences, Vol 130, p 01022 (2016) |
| ISSN: | 2100-014X |
| Popis: | International audience; We present a new evaluation of the negatively charged pion mass based on the simultaneous spec-troscopy of pionic nitrogen and muonic oxygen transitions using a gaseous target composed by a N 2 /O 2 mixture at 1.4 bar. We present the experimental setup and the methods for deriving the pion mass value from the spatial separation from the 5g − 4 f πN transition line and the 5g − 4 f µO transition line used as reference. Moreover, we discuss the importance to use dilute targets in order to minimize the influence of additional spectral lines from the presence of remaining electrons during the radiative emission. The occurrence of possible satellite lines is investigated via hypothesis testing methods using the Bayes factor. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|