Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-25484
Allkofer, Y (2009). Observation of πK-atoms with DIRAC-II. Hyperfine Interactions, 193(1-3):39-45.
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We present evidence for the first observation of electromagnetically bound π ± K ∓ -pairs (πK-atoms) with the DIRAC-II experiment at the CERN-PS. The πK-atoms are produced by the 24 GeV/c proton beam in a thin Pt-target and the dissociated π ± and K ∓ -mesons analyzed in a two-arm magnetic spectrometer. The observed enhancement at low relative momentum corresponds to the production of 173±54 πK-atoms. The mean life of πK-atoms is related to the s-wave πK-scattering lengths. From these first data we derive a lower limit for the mean life of 1.5 fs at 84% confidence level.
|Item Type:||Journal Article, refereed, original work|
|Communities & Collections:||07 Faculty of Science > Physics Institute|
|Deposited On:||05 Jan 2010 13:59|
|Last Modified:||23 Nov 2012 13:26|
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