Publication: Evidence for [pi]K-atoms with DIRAC
Evidence for [pi]K-atoms with DIRAC
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Adeva, B., et al, Allkofer, Y., & Amsler, C. (2009). Evidence for [pi]K-atoms with DIRAC. Physics Letters B, 674(1), 11–16. https://doi.org/10.1016/j.physletb.2009.03.001
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We present evidence for the first observation of electromagnetically bound π±Kminus-or-plus sign-pairs (πK-atoms) with the DIRAC experiment at the CERN-PS. The πK-atoms are produced by the 24 GeV/c proton beam in a thin Pt-target and the π± and Kminus-or-plus sign-mesons from the atom dissociation are 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, the measurement of
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- Adeva, B
- Allkofer, Y
- Amsler, C
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Adeva, B., et al, Allkofer, Y., & Amsler, C. (2009). Evidence for [pi]K-atoms with DIRAC. Physics Letters B, 674(1), 11–16. https://doi.org/10.1016/j.physletb.2009.03.001
