At the interaction vertex, is momentum conserved? If not, why not? Is it because of a fake particle in the event? How are we handling this strictly from a kinematics point of view (not a model question)? Prove we handle missing energy properly when we move to different frames. If this is not handled right it will really screw up a lot of analyses, especially xsec analyses.
The solid angle of the detector is 5 mrads. Do we correct for this rotation in the simulation in order to match data? In fact, we need to think about beam width and parallax, because a neutrino with a 400 m travel distance actually has an opening angle of 6.25 mrads. Note that this will be flavor dependent. A consequence of not getting this right is that your muon angle distribution in the xsecs will be wrong. It also affects any analysis looking for transverse momentum or
The deltas probably have too high of a threshold, since I can pick out data compared to MC in the DL LEE images from the amount of delta sparkle. Check this. This affects the multiple scattering energy measurement, all EM energy measurements, including the michels and also may explain the PIDA problem (and why truncated dQ/dx works better).
There is a claim that the case of 2 EM blobs near a 1mu1p always corresponds to a pi0, so we don’t need to worry about the mass peak. Prove to me that a relatively high energy photon splitting into 2 blobs that do not cluster is rare.
How often do you get a pi0 from cosmic right on top of your CCQE event? According to Kazu, who has done a lot of scanning, about 1 in 3 BNBEXT has a pi0. There are so many more cosmics and so many more CCQE than CCpi0 that it seems very likely there will be some. If that isn’t right, please explain.
Does every single xsec analysis use the right beam windows for data and MC? Are you aware of the window-length difference when doing the BNBEXT subtraction? Can you prove this is right for every single xsec analysis by making a plot for each?
Nearly all of the xsec analyses are making very tough cuts in order to get to a sample that is as pure as possible. When you do this, the error on the efficiency goes way up. How are you determining the error on your efficiency? Why should I think this is right? Prove to me it makes sense.