Closed rtysonCLAS12 closed 1 month ago
Spikes in ZVertex are due to the fact that there is no z-vertex position from the FT (no tracker). See https://github.com/JeffersonLab/iguana/pull/242#issuecomment-2225122654. and https://github.com/JeffersonLab/iguana/pull/246
Chris noticed spikes in certain distributions, for example the photon momentum and angles when looking at the photon filter, or in the electron z vertex (but not pion z vertex) when looking at the z vertex filter. See below for examples
We're not sure if these are related or not. The spikes in photon momentum/angles are at 0. Spikes in electron z vertex are at -3, the notional target position. This is only observed for electrons, maybe due to FT reconstruction? (Should check for photons).
Several hypothesis:
photon momentum and angles (cf https://github.com/JeffersonLab/iguana/pull/216)
e- Z Vertex (cf https://github.com/JeffersonLab/iguana/pull/242)
photon Z Vertex (cf https://github.com/JeffersonLab/iguana/pull/242)