Pionic Deuterium

Th. Strauch, F.D. Amaro, D.F. Anagnostopoulos, P. Bühler, D.S. Covita, H. Gorke, D. Gotta, A. Gruber, A. Hirtl, P. Indelicato, E.-O. Le Bigot, M. Nekipelov (+7 others)
2010 EPJ Web of Conferences  
The strong interaction shift and broadening in pionic deuterium have been remeasured with high statistics by means of the (3p-1s) X-ray transition using the cyclotron trap and a high-resolution crystal spectrometer. Preliminary results are (-2325+/-31) meV (repulsive) for the shift and (1171+23/-49} meV for the width, which yields precise values for the pion-deuteron scattering length and the threshold parameter for pion production.
doi:10.1051/epjconf/20100303006 fatcat:aqknnm7ybzbvhkdkijc4avo3t4