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Tracks passing a selection designed to identify photon conversions were given a shortcut through the ambi for a small efficiency gain. This had the unwanted side-effect of allowing electron brem tracks (mostly in the forward direction) to have incorrect hits and overshare IBL hits lowering the EM LH identification rate. Simple fix - remove short cut Impact on digest - 3 tracks over 3 events
Tracks passing a selection designed to identify photon conversions were given a shortcut through the ambi for a small efficiency gain. This had the unwanted side-effect of allowing electron brem tracks (mostly in the forward direction) to have incorrect hits and overshare IBL hits lowering the EM LH identification rate. Simple fix - remove short cut Impact on digest - 3 tracks over 3 events
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