Editorial Board Meeting (June 25, 2002)

Cutting out f-cracks

Motivation and relevant plots (by Marumi Kado and Robert Zitoun)

can be found on slide 19 of this presentation

Geometrically this cut leaves out 20% of the Central Calorimeter (a tower size in f is » 0.1 and the crack width cut out is 0.02) and needs to be studied.

For the moment this cut is included in current EMID certification.

Z/g*®ee Cross-Section

Currently LO cross-section from PYTHIA is used and a K-factor of 1.2 is applied.

Motivation for this number can be found in D0Note #3258 (bottom plot on page 27)

Initial Run2 measurement of Z cross-section (by Marumi Kado and Robert Zitoun) became available recently and I will try to use it instead.

Photon HMatrix. Photon ID vs Electron ID

Currently any Photon-specific EMID tools/variables are removed from the selection/ID cuts,

I rely entirely on certified (calorimeter info only, electron based) EMID ,

i.e. no Photon HMatrices, no track vetoes.

Higgs Workshop (June 28, 2002)

How EM fake rate was measured

EM fake rate was measured using the sample selected with muon-triggers-only by Shaohua Fu.

The advantage of using muon triggers only is ensuring that the sample is unbiased

(both EM-wise and Jet-wise). The disadvantage is low statistics. More to come when I understand this measurement better.

Why expected number of Wg events is small in comparison with gg

Still to be looked at.