S.Akar 2024 Bd_etapKS persistreco MC request

This request for made for trigger line development: !1058 (merged)

And the persistreco option was added

However as reported by Simon: "I've ran the new hlt2 line with the new set of MC samples produced with the persistreco option (supposed to be solving my issue), but I still get similar results, i.e. a signal efficiency for the trigger line below the percent... Please see below the efficiencies I get:

• TwoBodyCombiner/etaprime_gamma #=10000 Sum=2170 Eff=|( 21.70000 +- 0.412203)%|

• TwoBodyCombiner/BNOC_bbaryon_ks0_dd #=2170 Sum=1401 Eff=|( 64.56221 +- 1.02682 )%|

• TwoBodyCombiner/BNOC_BdsToEtapKS_Gamma_DD_Combiner #=1401 Sum=76 Eff=|( 5.424697 +- 0.605142)%|

Note that from the 76/10000 candidates, only less than half are actually truth-matched signal candidates.

So using the new MC samples I still cannot combine the KS and eta' candidates, as if only the tracks triggered from other trigger lines are saved (not the ones from my signal).

I do not know if this is an issue from the simulation, or from the procedure I'm using to build my candidates (looking in the wrong place for my candidates for instance)."