| Autor: |
Schlesser S., Schmid Ph., dos Santos J.M.F., Nekipelov M., Le Bigot E.-O., Indelicato P., Hirtl A., Gruber A., Gotta D., Gorke H., Covita D.S., Bühler P., Anagnostopoulos D.F., Amaro F.D., Strauch Th., Simons L.M., Trassinelli M., Veloso J.F.C.A., Zmeskal J. |
| Jazyk: |
angličtina |
| Rok vydání: |
2010 |
| Předmět: |
|
| Zdroj: |
EPJ Web of Conferences, Vol 3, p 03006 (2010) |
| Druh dokumentu: |
article |
| ISSN: |
2100-014X |
| DOI: |
10.1051/epjconf/20100303006 |
| Popis: |
The strong interaction shift ε1sπD and broadening Γ1sπD in pionic deuterium have been remeasured with high statistics by means of the πD(3p − 1s) X-ray transition using the cyclotron trap and a high-resolution crystal πD πD spectrometer. Preliminary results are ε1sπD = (−2325 ± 31) meV (repulsive) and Γ1sπD(1171+23-49) meV which yields for the πD scattering length aπD = [−(24.8 ± 0.3) + i (6.3-0.3+0.1)] · 10−3 mπ−1. From the imaginary part the threshold parameter for pion production is determined to be α = (252−11+15) µb. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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