Study of rare muon decay modes with the crystal box

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We report on a search for the lepton family-number-nonconserving decays ..mu../sup +/..-->..e/sup +/e/sup -/e/sup +/, ..mu../sup +/..-->..e/sup +/..gamma.., and ..mu../sup +/..-->..e/sup +/..gamma gamma.., using the Crystal Box detector at LAMPF. The experiment was run in the stopped muon channel at LAMPF during the winter and summer of 1984. Muons were stopped in the middle of a detector system consisting of a cylindrical drift chamber, a plastic scintillator hodoscope, and a segmented array of sodium iodide crystals. The sodium iodide surrounded the hodoscope and drift chamber. Events consistent with any of the above decays were recorded. The off-line data analysis imposed ... continued below

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Pages: 43

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Sandberg, V.; Bolton, R.D.; Bowman, J.D.; Carlini, R.D.; Copper, M.D.; Doung-Van, M. et al. January 1, 1985.

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Description

We report on a search for the lepton family-number-nonconserving decays ..mu../sup +/..-->..e/sup +/e/sup -/e/sup +/, ..mu../sup +/..-->..e/sup +/..gamma.., and ..mu../sup +/..-->..e/sup +/..gamma gamma.., using the Crystal Box detector at LAMPF. The experiment was run in the stopped muon channel at LAMPF during the winter and summer of 1984. Muons were stopped in the middle of a detector system consisting of a cylindrical drift chamber, a plastic scintillator hodoscope, and a segmented array of sodium iodide crystals. The sodium iodide surrounded the hodoscope and drift chamber. Events consistent with any of the above decays were recorded. The off-line data analysis imposed requirements on the timing, vertex location, and energy and momentum conservation for each event. Radioactive sources, conventional muon decay spectra, and photons from the process ..pi../sup -/p..-->..n..gamma.. and ..pi../sup -/p..-->..n..pi../sup 0/ were used to provide energy calibration and resolution estimates. The inner bremsstrahlung processes ..mu../sup +/..-->.. e/sup +/..gamma nu..anti..nu.. and ..mu../sup +/..-->..e/sup +/e/sup -/e/sup +/..nu..anti..nu.. were observed at the expected rates. Details of the detector, the data analysis, and our latest bounds for the branching ratios will be presented. 33 figs.

Physical Description

Pages: 43

Notes

NTIS, PC A03/MF A01; 1.

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  • General meeting of the American Physical Society, Washington, DC, USA, 25 Apr 1985

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  • Other: DE85015678
  • Report No.: LA-UR-85-2346
  • Report No.: CONF-850414-1
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 5264177
  • Archival Resource Key: ark:/67531/metadc1065962

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  • January 1, 1985

Added to The UNT Digital Library

  • Feb. 4, 2018, 10:51 a.m.

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  • March 15, 2018, 5:04 p.m.

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Sandberg, V.; Bolton, R.D.; Bowman, J.D.; Carlini, R.D.; Copper, M.D.; Doung-Van, M. et al. Study of rare muon decay modes with the crystal box, article, January 1, 1985; New Mexico. (digital.library.unt.edu/ark:/67531/metadc1065962/: accessed December 13, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.