Charge exchange of stopped π⁻ in deuterium
By using a pair of large Nal spectrometers in a coincidence configuration we have observed the charge exchange of stopped π⁻ in deuterium π⁻ + d → 2n + π°. We have measured the branching ratio of this reaction [equation omitted] and find R = (1.45 ± 0.19) x 10⁻⁴. This measurement is the first o...
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| Language: | English |
| Published: |
2010
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| Online Access: | http://hdl.handle.net/2429/20737 |
| Summary: | By using a pair of large Nal spectrometers in a coincidence configuration we have observed the charge exchange of stopped π⁻ in deuterium
π⁻ + d → 2n + π°.
We have measured the branching ratio of this reaction [equation omitted]
and find
R = (1.45 ± 0.19) x 10⁻⁴.
This measurement is the first observation of pion charge exchange at rest in deuterium and represents an increase in sensitivity of a factor of 40 over previous measurements. The measured value of R agrees well with the recent theoretical result of Beder(1.39 x 10⁻⁴ ≤ R ≤ 1.59 x 10⁻⁴). === Science, Faculty of === Physics and Astronomy, Department of === Graduate |
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