eN measurement on 8 GeV data

[tvami]

Issue description

Tasks

• Look at the samples located in POD under

/home/vamitamas/Samples8GeV/eN-genie

• Make sure we can reconstruct the electron
• Measure the angles and energy transfer

Existing material to start off

• Run tracking on existing 8 GeV samples #25

[fdelzanno]

The sample has no reconstructed Tagger tracks, so we can only reconstruct the electron from the Recoil Tracks. There are 24420 particles in the sample, distributed as:

• 19041 Electrons (PDGID 11)
• 208 Positrons (PDGID -11)
• 2384 Protons (PDGID 2212 or -2212)
• 2587 Pions (PDGID 211 or -211)
• 181 Kaons (PDGID 321 or -321)
• 19 Sigma Baryons (PDGID 3112 or 3222)

There are 1173 events in which we fail to reconstruct any electron in the recoil tracker. For the remaining events, we can plot the momentum distribution for reconstructed electrons:

Additionally, there are 545 events in which the reconstructed electron has a high z-momentum (>10 GeV). Their pz distribution is below. These may be interesting events to investigate further:

[fdelzanno]

Angle of electron momentum off the beam axis (z) reconstructed from global perigee information (in radians and degrees):