Hadronic shift in pionic hydrogen

M. Hennebach, D. F. Anagnostopoulos, A. Dax,H. Fuhrmann,D. Gotta, A. Gruber, A. Hirtl, P. Indelicato, Y. -W. Liu,B. Manil,V. E. Markushin, A. J. Rusi el Hassani, L. M. Simons, M. Trassinelli, J. Zmeskal

The European Physical Journal A（2014）

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摘要

The hadronic shift in pionic hydrogen has been redetermined to be ε 1 s = 7.086 ± 0.007(stat) ± 0.006(sys) eV by X-ray spectroscopy of ground-state transitions applying various energy calibration schemes. The experiment was performed at the high-intensity low-energy pion beam of the Paul Scherrer Institut by using the cyclotron trap and an ultimate-resolution Bragg spectrometer with bent crystals.

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关键词

Calibration Line,Energy Calibration,Baru,Muonic Hydrogen,Exotic Atom

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