vertex distribution for background events

[sunxuhit]

If use pi+ as the beam, K+ and p as background, generated vertex distribution of K+ and p are not the same as input one. In gcard file, I have following commands:

But the generated vertex for K+ and p are much wider than input. Please find an example plot in attachment.
vertex_rich_pikpplus_flat.pdf

[maureeungaro]

Can you send me the gcard you used to create this plot? Also, I assume this was using the latest clas12 tag?

[maureeungaro]

Keep in mind if you do not select the parent to be "0", these could be secondaries particles produced somewhere else than the vertex you specified.

[sunxuhit]

please find my gcard file in the attachment. Not sure which tag I have used, it was a quick test, I didn't look into details.
det1_rich_batch_pikpplus.gcard.zip