1. [Untitled]
- Author
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V. A. Andreev, G. N. Schapkin, An.A. Vorobyov, F. J. Hartmann, V. I. Jatsoura, Jules Deutsch, B. Gartner, S. J. Freedman, N. I. Voropaev, C. J. G. Onderwater, S. M. Sadetsky, W. D. Herold, V.A. Ganzha, A. Dijksman, B. Lauss, Oleg Maev, P. U. Dick, Frederick Gray, P. T. Debevec, Richard Schmidt, P. Kammel, D. V. Balin, T. Case, V. E. Markushin, A. G. Krivshich, G. E. Petrov, S. M. Clayton, D. B. Chitwood, G. G. Semenchuk, J. Egger, A. A. Fetisov, R. M. Carey, E. M. Maev, C. C. Polly, René Prieels, Jan Govaerts, D. W. Hertzog, Kenneth M. Crowe, C. Petitjean, M. A. Soroka, and D. Fahrni
- Subjects
Physics ,Nuclear and High Energy Physics ,Muon-catalyzed fusion ,Particle physics ,Muon ,Time projection chamber ,Proton ,Condensed Matter Physics ,Atomic and Molecular Physics, and Optics ,Muon capture ,Nuclear physics ,Particle decay ,Physical and Theoretical Chemistry ,Exotic atom ,Lepton - Abstract
The aim of the MuCap experiment is a 1% measurement of the singlet capture rate Lambda_S for the basic electro-weak reaction mu + p -> n + nu_mu. This observable is sensitive to the weak form-factors of the nucleon, in particular to the induced pseudoscalar coupling constant g_P. It will provide a rigorous test of theoretical predictions based on the Standard Model and effective theories of QCD. The present method is based on high precision lifetime measurements of mu^- in hydrogen gas and the comparison with the free mu^+ lifetime. The mu^- experiment will be performed in ultra-clean, deuterium-depleted H_2 gas at 10 bar. Low density compared to liquid H_2 is chosen to avoid uncertainties due to ppmu formation. A time projection chamber acts as a pure hydrogen active target. It defines the muon stop position in 3-D and detects rare background reactions. Decay electrons are tracked in cylindrical wire-chambers and a scintillator array covering 75% of 4 pi. Comment: Int. RIKEN Conf. on Muon Catalyzed Fusion and Related Exotic Atoms, April 2001, Shimoda, Japan, to be published in Hyperfine Interactions
- Published
- 2001
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