Electron Energy Resolution
The electron energy resolution is measured by matching the observed width of the
Z mass peak in the data with the Monte Carlo. It is parametrized as
SigmaE/E = 0.130 / sqrt(ET) + CCCEM + NCC/E ( CC )
SigmaE/E = 0.157 / sqrt(ET) + CECEM + NEC/E ( EC )
The constant term is tuned by matching the observed width of the
Z mass peak in the data with the Monte Carlo. The Z invariant mass spectrum
is fitted with the Breit-Wigner convoluted with Gaussian and plus the Background shape.
| Fits to Monte Carlo to measure the Z width (P3).
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| The dielectron mass resolution for CC-EC Z events as a function
of the EC constant term. The horizontal lines show the data measurement and
uncertainty.
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| The dielectron mass resolution for EC-EC Z events as a function
of the EC constant term. The horizontal lines show the data measurement and
uncertainty.
|
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