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arXiv · 1406.6525

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
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Abstract

The hadronic shift in pionic hydrogen has been redetermined to be $\epsilon_{1s}=7.086\,\pm\,0.007(stat)\,\pm\,0.006(sys)$\,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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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. 2014-06-25. Hadronic shift in pionic hydrogen. https://doi.org/10.1140/epja/i2014-14190-x

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