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-- SaraKnaack - 11 Feb 2009

Electron Time Spectrum Results

Consistency with world expectation values.

Input Assumptions

  • phi = 0.0112 +/- .0001 (known to something like 1 % relative precision)
  • C_Ar = 18.5 +/- .5 ppm

Electron fit results.

  • R_ppmu = 1.999 (88) 10^-5 1/ns
  • R_pAr_ = 4.468 (17) 10^-5 1/ns
  • R_Ar = 1.423 (17) 10^-3 1/ns
  • Chi-square currently 1.16, slightly high
  • Subject to full consistency and understanding of the electron time spectrum and the assignment of appropriate cuts and systematic errors, mu-Ar-p kinetics and/or apparatus related.

Rate Results (Preliminary - subject to some reference checking and documentation)

  • r_ppmu = R_ppmu/phi = 1.776 (80) 10^-3 1/ns (or )
  • Compare to 2.34 (17) 10^-3 1/ns from Bystritsky
  • Compare to 1.89 (20) 10^-3 1/ns from Blasser
  • This is fairly consistent with a theoretical result ~ 1.8 (1) 10^-3 1/ns. (?)
  • Or 2.3 (2) 10^-3 1/ns world average
  • r_pAr = 2.156 (61) 10^2 1/ns
  • Which is quite higher than the earlier result of 1.63 (9) 10^2 1/ns
  • R_Ar = 1.423 (17) 10^-3 1/ns
  • Compare to 1.40 (1)10^-3 1/ns (? must double check)

El Time Spectrum Scans

  • 120-15000 ns fit window
  • "nocut" impact parameter condition


ElGondolaScan_Better.gif


ImpactParameterScan_Better.gif

El "nocut"


ElFit_nocut.gif
Csrtm_1mus_nocut.gif
Csrtm_7mus_nocut.gif

El "b120mm"


ElFit_b120mm.gif
Csrtm_1mus_b120mm.gif
Csrtm_7mus_b120mm.gif

Muon Decay Rate Fit Scan


ElMuDecayRateScan.gif
Topic attachments
I Attachment History Action Size Date Who Comment
GIFgif Csrtm_1mus_b120mm.gif r1 manage 25.7 K 2009-02-24 - 23:10 SaraKnaack  
GIFgif Csrtm_1mus_nocut.gif r1 manage 26.7 K 2009-02-24 - 23:11 SaraKnaack  
GIFgif Csrtm_7mus_b120mm.gif r1 manage 25.0 K 2009-02-24 - 23:11 SaraKnaack  
GIFgif Csrtm_7mus_nocut.gif r1 manage 25.6 K 2009-02-24 - 23:11 SaraKnaack  
GIFgif ElFit_b120mm.gif r1 manage 12.1 K 2009-02-24 - 23:12 SaraKnaack  
GIFgif ElFit_nocut.gif r1 manage 13.8 K 2009-02-24 - 23:12 SaraKnaack  
GIFgif ElGondolaScan_Better.gif r1 manage 18.0 K 2009-02-18 - 15:50 SaraKnaack  
GIFgif ElMuDecayRateScan.gif r1 manage 26.3 K 2009-02-24 - 23:13 SaraKnaack  
GIFgif ImpactParameterScan_Better.gif r1 manage 17.6 K 2009-02-18 - 15:52 SaraKnaack  
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Topic revision: r4 - 2009-02-24 - SaraKnaack
 
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