Final results of μp capture rate ΛS and pseudoscalar coupling gP
We present the final results of muon capture on proton μ- + p → νμ + n, which were obtained by the MuCap Collaboration at the Paul Scherrer Institute. The singlet μp capture rate ΛS is determined as the difference between the lifetimes of μp and μ+. Our result is ΛSMuCap = 714.9 ± 5.4stat ± 5.1syst...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2014-03-01
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| Series: | EPJ Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/epjconf/20146605018 |
| Summary: | We present the final results of muon capture on proton μ- + p → νμ + n, which were obtained by the MuCap Collaboration at the Paul Scherrer Institute. The singlet μp capture rate ΛS is determined as the difference between the lifetimes of μp and μ+. Our result is ΛSMuCap = 714.9 ± 5.4stat ± 5.1syst s-1 in excellent agreement with the prediction of chiral perturbation theory ΛSCHPT = 712.7 ± 4.3 s-1. The induced pseudoscalar coupling constant results as gPMuCap = 8.06 ± 0.48exp ± 0.28th whereas gPCHPT = 8.26 ± 0.23. |
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| ISSN: | 2100-014X |