Add exclusive hadronic doubly charmed baryon lines

Add exclusive hadronic doubly charmed baryon lines based on the Run2 implementations, including:

• Xi_cc++
• Xi_cc+
• Omega_cc+

decays to charmed-baryon and charmed-meson final states. Wrong-sign and doubly-Cabbibo-suppressed lines are also added for background study. There are 46 lines in total.

ThOr functors, ParticleFilter and ParticleCombiner are used to write the lines. A helper function require_one is added to simplify the use of logic |.

Signal efficiency is estimated with 1K simulated signal events for two benchmark lines:

• Hlt2XiccpToLcpKmPip_LcpToPpKmPipLine (Xi_cc+ -> Lambda_c+ K- pi+): 10%
• Hlt2XiccppToLcpKmPipPip_LcpToPpKmPipLine (Xi_cc++ -> Lambda_c+ K- pi+ pi+): 2%.

Rates are tested with 12K MinBias simulated events. For most lines, they are well below 100 Hz (calculated according to 1 MHz * Eff). The largest rate is 485 Hz, which can be further optimized when more realistic simulation samples are available.

Hlt2OmegaccToDpPpKmKmPip_Dp2KmPipPipLine             #=12373   Sum=0     Eff=|( 0.000000 +- 0.00000 )%|
Hlt2OmegaccToLcpKmKmPipPip_LcpToPpKmPipLine          #=12373   Sum=0     Eff=|( 0.000000 +- 0.00000 )%|
Hlt2OmegaccToOmegacPim_OmegacToPpKmKmPipLine         #=12373   Sum=0     Eff=|( 0.000000 +- 0.00000 )%|
Hlt2OmegaccToOmegacPip_OmegacToPpKmKmPipLine         #=12373   Sum=0     Eff=|( 0.000000 +- 0.00000 )%|
Hlt2OmegaccToXic0KmPipPip_Xic0ToPpKmKmPipLine        #=12373   Sum=0     Eff=|( 0.000000 +- 0.00000 )%|
Hlt2OmegaccToXipKmPim_XipToPpKmPipLine               #=12373   Sum=2     Eff=|(0.01616423 +- 0.0114289)%|
Hlt2OmegaccToXipKmPip_XipToPpKmPipLine               #=12373   Sum=2     Eff=|(0.01616423 +- 0.0114289)%|
Hlt2XiccpToD0PpKmPim_D02KmPipLine                    #=12373   Sum=0     Eff=|( 0.000000 +- 0.00000 )%|
Hlt2XiccpToD0PpKmPip_D02KmPipLine                    #=12373   Sum=1     Eff=|(0.008082114 +- 0.00808179)%|
Hlt2XiccpToD0PpKpPim_D02KmPipLine                    #=12373   Sum=1     Eff=|(0.008082114 +- 0.00808179)%|
Hlt2XiccpToD0Pp_D02KmPipLine                         #=12373   Sum=6     Eff=|(0.04849269 +- 0.0197923)%|
Hlt2XiccpToDpPpKm_Dp2KmPipPipLine                    #=12373   Sum=0     Eff=|( 0.000000 +- 0.00000 )%|
Hlt2XiccpToDpPpKp_Dp2KmPipPipLine                    #=12373   Sum=0     Eff=|( 0.000000 +- 0.00000 )%|
Hlt2XiccpToDpPpPim_Dp2KmPipPipLine                   #=12373   Sum=1     Eff=|(0.008082114 +- 0.00808179)%|
Hlt2XiccpToDspPpKm_Dsp2KmKpPipLine                   #=12373   Sum=0     Eff=|( 0.000000 +- 0.00000 )%|
Hlt2XiccpToLcpKmPim_LcpToPpKmPipLine                 #=12373   Sum=4     Eff=|(0.03232846 +- 0.0161616)%|
Hlt2XiccpToLcpKmPip_LcpToPpKmPipLine                 #=12373   Sum=3     Eff=|(0.02424634 +- 0.0139969)%|
Hlt2XiccpToLcpKpPim_LcpToPpKmPipLine                 #=12373   Sum=3     Eff=|(0.02424634 +- 0.0139969)%|
Hlt2XiccpToLcpPimPip_LcpToPpKmPipLine                #=12373   Sum=5     Eff=|(0.04041057 +- 0.0180685)%|
Hlt2XiccpToXic0Kp_Xic0ToPpKmKmPipLine                #=12373   Sum=0     Eff=|( 0.000000 +- 0.00000 )%|
Hlt2XiccpToXic0Pim_Xic0ToPpKmKmPipLine               #=12373   Sum=0     Eff=|( 0.000000 +- 0.00000 )%|
Hlt2XiccpToXic0Pip_Xic0ToPpKmKmPipLine               #=12373   Sum=0     Eff=|( 0.000000 +- 0.00000 )%|
Hlt2XiccpToXipKpPim_XipToPpKmPipLine                 #=12373   Sum=2     Eff=|(0.01616423 +- 0.0114289)%|
Hlt2XiccpToXipPimPim_XipToPpKmPipLine                #=12373   Sum=1     Eff=|(0.008082114 +- 0.00808179)%|
Hlt2XiccpToXipPimPip_XipToPpKmPipLine                #=12373   Sum=1     Eff=|(0.008082114 +- 0.00808179)%|
Hlt2XiccppToD0PpKmPipPim_D02KmPipLine                #=12373   Sum=0     Eff=|( 0.000000 +- 0.00000 )%|
Hlt2XiccppToD0PpKmPipPip_D02KmPipLine                #=12373   Sum=0     Eff=|( 0.000000 +- 0.00000 )%|
Hlt2XiccppToD0PpKpPipPim_D02KmPipLine                #=12373   Sum=0     Eff=|( 0.000000 +- 0.00000 )%|
Hlt2XiccppToD0PpPip_D02KmPipLine                     #=12373   Sum=0     Eff=|( 0.000000 +- 0.00000 )%|
Hlt2XiccppToDpPpKmPim_Dp2KmPipPipLine                #=12373   Sum=0     Eff=|( 0.000000 +- 0.00000 )%|
Hlt2XiccppToDpPpKmPip_Dp2KmPipPipLine                #=12373   Sum=0     Eff=|( 0.000000 +- 0.00000 )%|
Hlt2XiccppToDpPpKpPip_Dp2KmPipPipLine                #=12373   Sum=0     Eff=|( 0.000000 +- 0.00000 )%|
Hlt2XiccppToDpPp_Dp2KmPipPipLine                     #=12373   Sum=0     Eff=|( 0.000000 +- 0.00000 )%|
Hlt2XiccppToDspPpKmPip_Dsp2KmKpPipLine               #=12373   Sum=0     Eff=|( 0.000000 +- 0.00000 )%|
Hlt2XiccppToLcpKmPipPim_LcpToPpKmPipLine             #=12373   Sum=1     Eff=|(0.008082114 +- 0.00808179)%|
Hlt2XiccppToLcpKmPipPip_LcpToPpKmPipLine             #=12373   Sum=0     Eff=|( 0.000000 +- 0.00000 )%|
Hlt2XiccppToLcpKpPimPip_LcpToPpKmPipLine             #=12373   Sum=0     Eff=|( 0.000000 +- 0.00000 )%|
Hlt2XiccppToLcpPim_LcpToPpKmPipLine                  #=12373   Sum=3     Eff=|(0.02424634 +- 0.0139969)%|
Hlt2XiccppToLcpPip_LcpToPpKmPipLine                  #=12373   Sum=2     Eff=|(0.01616423 +- 0.0114289)%|
Hlt2XiccppToOmegacKpKp_OmegacToPpKmKmPipLine         #=12373   Sum=0     Eff=|( 0.000000 +- 0.00000 )%|
Hlt2XiccppToXic0KpPip_Xic0ToPpKmKmPipLine            #=12373   Sum=0     Eff=|( 0.000000 +- 0.00000 )%|
Hlt2XiccppToXic0PipPim_Xic0ToPpKmKmPipLine           #=12373   Sum=0     Eff=|( 0.000000 +- 0.00000 )%|
Hlt2XiccppToXic0PipPip_Xic0ToPpKmKmPipLine           #=12373   Sum=0     Eff=|( 0.000000 +- 0.00000 )%|
Hlt2XiccppToXipKp_XipToPpKmPipLine                   #=12373   Sum=1     Eff=|(0.008082114 +- 0.00808179)%|
Hlt2XiccppToXipPim_XipToPpKmPipLine                  #=12373   Sum=1     Eff=|(0.008082114 +- 0.00808179)%|
Hlt2XiccppToXipPip_XipToPpKmPipLine                  #=12373   Sum=1     Eff=|(0.008082114 +- 0.00808179)%|

Supersede !382 (closed).

added Charm RTA hlt2 selection labels

requested review from @mstahl, @tpajero, @fsouzade, @lpica, and @roneil

assigned to @axu

mentioned in merge request !382 (closed)

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Hi @tpajero, @mstahl, hi all. Sorry for my lack of response. This MR will supersede !382 (closed) which is too old to be merged.

This MR is designed to be self-consistent to avoid conflict with !1476 (merged).

This MR aims to have a first working version of doubly charmed baryon lines. Once it is ready, we can discuss further how to organize doubly charmed baryon lines (hadronic, semileptonic, hyperons) based on what we have got. I also see some potentials to incorporate singly-charmed spectroscopy lines, but this can be discussed in a later stage.

From my side, this MR is ready to go.

changed the description

Hi @axu, many thanks for the work! I've left a few comments regarding the particle ordering in the decay descriptors and about the control flow. Apart from that, as a general comment, it would be better to try to stick to the code design guidelines and to follow the line naming conventions. The rates you show were calculated with an hlt1 filtered minimum bias sample?

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• 328ef671 - apply charm prefilters and naming conventions

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• 00dc1d5d - follow convention and optimize control flow

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