Monday, January 14, 2008

Plots for the meeting.

Here are some plots I'm going to talk about in today's meeting. I'll write something about them in the blog later, but the meeting starts in 5 minutes so I don't have time now.
Things as a function of kT up to 0.01 and up to 1.5. Note that the second set of plots has a double counting error if the positron and the electron are in the same jet (so the Z mass plot is double what it should be), I'm running up a corrected plot but it's not finished yet.

Addendum 15/Jan/08
Here's the corrected plot for the kT values up to 1.5, and also one for kT values up to 5*10^-4.
The reconstructed Z mass peak is still very low; I guess it will peak when every particle is in its own jet since the extra reconstructed neutrals are double counting energy (the charged particle gets its energy from the track momentum, so any counting of its clusters is double counting). You can sort of see this because the plot seems to spread higher more so than lower, although you can only see it for the first kT bin; I'm having "issues" getting Paida to rotate the plots appropriately.
I'll reverse the plots, i.e plot the kT as a function of the other stuff which should give me a decent kT cut to work with. I'll try and get some rudimentary electron selection done by the end of the week and then move on to the rest of the analysis framework, leaving someone else to worry about the details.

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