## Measurement of the forward-backward Asymmetry with e+e- pairs: Winter 2004 |

e-mail authors

Here is my talk (powerpoint, pdf) from PHENO, which includes all the plots and tables from the analysis.

better understanding the analysis.

All the plots can be found in this tarball. You will find eps, gif, and root files for each plot for your convenience. Below

are brief explanations of the plots contained in the tarball.

These are the results assuming SM couplings (We usually show this one):

Afb_Results_SM_040422.eps

Afb_Results_SM_zoom_040422.eps

contourquarks_with_syst_3sig.eps

These are the results without any SM constraints (larger uncertainties near the Z-peak):

Afb_Fit_smooth_zoom_040422.eps

This shows the invariant mass distribution of the candidate events.

Mass_tot_040425.eps

Mass_Scale_Res_040425.eps

This shows how the sign mis-identification depends on Invariant Mass. Mis-ID rate is half of SS event rate

This shows a comparison of eta between Simulation and Data, we check the difference as a systematic, and it is negligible

Acceptance_costheta_040425.eps

This shows the acceptance/correction factor vs invariant mass for 4 different effects with no simulation

starting top left and going counter-clockwise: geometric, kinematic, resolution, internal radiation

This shows the total acceptance/correction factor including all effects in the simulation

This shows how events migrate from one bin to another. The rows are normalized to one. To see where events originate before detector effects, choose one row and read off the percentages. For example bin 15 is mostly coming from bin 15 at the

physics level. Bin 5 has a larger percentage of events coming from bin 7 (the Z-pole) than from the original bin 5.

Mass_Dijet_040425.eps

Cross-check of dijet background calculation in CC topology:

Mass_SSvOS_040425.eps

Asymmetry of Dijet background (plot shows that it is nearly zero):

Last updated Fri, 09 Jun 2004 by Gregory Veramendi