Beams Document 1237-v1

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The Variation of CDF/D0 Luminosity Ratio with Time

Document #:
Beams-doc-1237-v1
Document type:
Note
Submitted by:
Aimin Xiao
Updated by:
Aimin Xiao
Document Created:
29 Jun 2004, 18:39
Contents Revised:
29 Jun 2004, 18:39
Metadata Revised:
29 Jun 2004, 18:39
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Abstract:
The two detectors installed at Tevatron, CDF and D0, have different luminosity due to optical function distortion at both IPs. This ratio also changes with time. The study we are taking out is to investigate this phenomenon and try to explain it with hourglass effects, beam separation at IP and crossing angle effects, etc. The measured data are also included in the analysis, and give out a predict luminosity ratio change with time. The results are mostly agree with our observation, but still some other effects we don’t understand very clear yet.
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