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Talk1 h 10 min

Statistical Issues in Searches for New Physics

Louis Lyons · CERN

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About

Given the cost, both financial and even more importantly in terms of human effort, in building High Energy Physics accelerators and detectors and running them, it is important to use good statistical techniques in analysing data. This talk covers some of the statistical issues that arise in searches for New Physics. They include topics such as:

Should we insist on the 5 sigma criterion for discovery claims?

What are the relative merits of a Raster Scan or a "2-D" approach?

P(A|B) is not the same as P(B|A)

The meaning of p-values

Example of a problematic likelihood

What is Wilks Theorem and when does it not apply?

How should we deal with the "Look Elsewhere Effect"?

Dealing with systematics such as background parametrisation

Coverage: What is it and does my method have the correct coverage?

The use of p0 vs. p1 plots

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The talk

  1. Statistical Issues in Searches for New Physics 2015-01-13 · 1 h 10 min · CERN's player

Credits and licence

Institution
CERN
Department
EP Seminar
Speaker
Louis Lyons
Year
2015
Language
English
Subjects
Physics
Source
CERN
Licence
CERN, as CERN states it. CERN's terms
Attribution
© CERN. CERN provides its audiovisual media free of charge for educational and informational use, credited to CERN; this lecture is shown in CERN's own player.
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