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Pionic Deuterium

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arxiv 1002.4277 v1 pith:TNGPODFD submitted 2010-02-23 nucl-ex

Pionic Deuterium

Th. Strauch , F. D. Amaro , D. F. Anagnostopoulos , P. B"\uhler , D. S. Covita , H. Gorke , D. Gotta , A. Gruber
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A. Hirtl P. Indelicato E.-O. Le Bigot M. Nekipelov J. M. F. dos Santos Ph. Schmid S. Schlesser L.M. Simons M. Trassinelli J. F. C. A. Veloso J. Zmeskal
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keywords deuteriumpionicshiftbeenbroadeningcrystalcyclotronhigh
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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.

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