A New Limit On Vµ -> Vtau Oscillations

Brooijmans, Gustaaf
(1998)

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Authors
  • Brooijmans, Gustaaf
    author
Supervisors
Favart, D.
Abstract
Next, in chapter 6, we discuss our work on the tagging of muons with the Chorus detector. After explaining the various algorithms used we come to the efficiencies, understanding the found results through event kinematics. A study of non-tagged muons shows that the software efficiency is very close to maximal, and physics is the cause of nearly all the losses. The bulk of our study lies in the determination of the scanning efficiencies. Chapter 7 starts with the description of the interface emulsion sheets and the proof of a method we developed to extract the real scanning efficiency for these sheets from the data itself. We proceed to compare the found results with the results obtained by our simulation and comment on the possible causes for the observed discrepancy. Moving on, we explain how the search for the primary vertex and a possible decay kink is conducted and give the corresponding efficiencies we found using our Monte-Carlo. To close the chapter, we elaborate on the video image simulation, a tool we developed to help improve and determine the efficiency of video image analysis programs. These programs will be used intensively in the future to search for kinks. Last but not least, chapter 8 combines all these numbers with the present scanning status to put a new limit on Vµ -> Vtau oscillations. It also includes a few words on backgrounds and the results from a study of systematic uncertainties. We conclude with a new exclusion plot.
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Citations

Brooijmans, G. (1998). A New Limit On Vµ -> Vtau Oscillations. https://hdl.handle.net/2078.5/129910