TY  - JOUR
AU  - Gotta, Detlev
AU  - Amaro, F. D.
AU  - Anagnostopoulos, D. F.
AU  - Bühler, P.
AU  - Covita, D. S.
AU  - Fuhrmann, H.
AU  - Gorke, H.
AU  - Hennebach, M.
AU  - Hirtl, A.
AU  - Ishiwatari, T.
AU  - Indelicato, P.
AU  - Jensen, T. S.
AU  - Le Bigot, E.-O.
AU  - Manil, B.
AU  - Markushin, V. E.
AU  - Marton, J.
AU  - Nekipelov, M.
AU  - Pomerantsev, V. N.
AU  - Popov, V. P.
AU  - el Hassani, A. J. Rusi
AU  - Schlesser, S.
AU  - Schmid, Ph.
AU  - Strauch, Th.
AU  - Theisen, M.
AU  - Trassinelli, M.
AU  - Veloso, J. F. C. A.
AU  - Zmeskal, J.
AU  - Gruber, A.
AU  - Simons, L. M.
AU  - dos Santos, J. M. F.
AU  - Liu, Y.-W.
TI  - Pionic hydrogen and deuterium
JO  - The European physical journal / Web of Conferences
VL  - 262
SN  - 2100-014X
CY  - Les Ulis
PB  - EDP Sciences
M1  - FZJ-2023-00422
SP  - 01005 -
PY  - 2022
AB  - The strong-interaction effects both in pionic hydrogen and deuteriumatoms have been re-determined with improved precision. The hadronicshift and width in pionic hydrogen together with the hadronic shift in pionicdeuterium constitute a one-fold constraint for the two independent pion-nucleonscattering lengths. Furthermore, the hadronic width in pionic deuterium measuresthe transition strength of s-wave pions on an isoscalar nucleon-nucleonpair which is an independent quantity not related to the pion-nucleon scatteringlengths. The experiment was performed at the Paul Scherrer Institute bystopping a high-intensity low-energy pion beam in gaseous targets using thecyclotron trap. The X-rays emitted by the H and D atoms were analysedwith a high resolution Bragg spectrometer equipped with spherically bent crystals.The pion-nucleon scattering lengths and other physical quantities extractedfrom the atom data are in good agreement with the results obtained from pion-nucleonand nucleon-nucleon scattering experiments and confirm that a consistentpicture is achieved for the low-energy pion-nucleon sector with respect tothe expectations of chiral perturbation theory.
T2  - International Conference on Exotic Atoms and Related Topics
CY  - 13 Sep 2021 - 17 Sep 2021, Vienna (Austria)
Y2  - 13 Sep 2021 - 17 Sep 2021
M2  - Vienna, Austria
LB  - PUB:(DE-HGF)8 ; PUB:(DE-HGF)16
DO  - DOI:10.1051/epjconf/202226201005
UR  - https://juser.fz-juelich.de/record/917190
ER  -