DØ Level 3
Algorithms Meeting: 5th February 2003 in the Farside
Talks
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p_t dependent errors for track impact
parameters: Per Jonsson
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Error currently implemented depends only on number of SMT hits
associated to a track.
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Need p_t dependent contribution to track errors to account for
multiple scattering.
This is particularly important for low p_t tracks (needed for
b-tagging, vertexing).
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Currently 45 micron p_t independent term added to impact parameter
error. This accounts in part for the beam size, but also for misalignment?
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Daniel and Per will implement this into the global tracking tool for p15.
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L3MEt studies: Lee Sawyer
Switching Nada on causes strange behaviour in the L3MEt tool. The
resolution degrades and the scalar Et sum increases!
Lee will investigate and will report at next week's meeting.
Scribe: Terry Wyatt.