Muon Capture in Gaseous Hydrogen
1969
15 pages
Published in:
- Phys.Rev. 177 (1969) 2118-2132
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Abstract: (APS)
An experiment to measure the muon nuclear capture rate in ultrapure gaseous hydrogen (8 atm, 293°K) has been performed using a special target in which a system of gas proportional counters, working with the pure hydrogen of the target itself, were operating. Neutrons from the capture reactions were detected using a scintillation-counter technique, and the γ-ray background was eliminated by pulse-shape discrimination. The working conditions ensured that the captures were taking place in μp atomic systems in a singlet total-spin state. The experimental result is Λexpt=651±57 sec−1, which has to be compared with the theoretical rate Λs, theor=626±26 sec−1. From the experimental capture rate, and within the framework of the currently accepted theory, we have obtained for the induced pseudoscalar coupling constant gp=(−7.3±3.7)gV. The results of the present experiment are analyzed, together with results obtained from stopping negative muons in liquid hydrogen.- MUON- P: CAPTURE
- CAPTURE: MUON- P
- HYDROGEN: GAS
- ATOM: MUONIC ATOM
- HYDROGEN: MUONIC ATOM
- COUPLING CONSTANT: VECTOR
- VECTOR: COUPLING CONSTANT
- EXPERIMENTAL RESULTS
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