Line shape of the μH(3p - 1s) transition
- Covita, Daniel,
- Anagnostopoulos, Dimitri
- Gorke, H.
- Gotta, Detlev
- Gruber, A.
- Hirtl, Albert
- Ishiwatari, T.
- Indelicato, Paul
- Le Bigot, Eric-Olivier
- Nekipelov, M.
- dos Santos, Joaquim,
- Schmid, Ph.
- Simons, Leopold
- Trassinelli, Martino
- Veloso, João,
- Zmeskal, Johann
Publication date
September 2009
DOI Publisher
Springer Science and Business Media LLCAbstract
International audienceThe line shape of the (3p − 1s) X-ray transition in muonic hydrogen was measured for the first time with a high-resolution crystal spectrometer. The assumption of a statistical population of the hyperfine levels was directly confirmed by experiment, and a measured value for the hyperfine splitting is reported. An X-ray line broadening due to Doppler effect could be clearly identified and attributed to different Coulomb de-excitation transitions which precede the measured radiative transition. The results allow a decisive test of advanced cascade model calculations and establish an alternative and “model free” method to extract the strong-interaction parameters from pionic hydrogen data
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