Add prompt multilepton lines

Adds a builder for prompt decays of neutral mesons (in mass regions of phi, Jpsi, Upsilon) to four leptons: SM decays to 4 muons, 4 electrons, (mumu)(ee), and LFV channels (mue)(mue), (mumu)(mue) and (ee)(mue).

Current rates: (tested on 25k mb events)

HLT rates: 
----------------------------------------------------------------------------------------------------
Line:	 Hlt2RD_JpsiTo2Mu2E_LineDecision                  	 Incl: 0.06674230794900889 +/- 0.06 kHz, Excl: 0.06674230794900889 +/- 0.06 kHz
Line:	 Hlt2RD_JpsiTo2Mup2Em_LineDecision                	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_JpsiTo3MuE_LineDecision                   	 Incl: 0.06674230794900889 +/- 0.06 kHz, Excl: 0.06674230794900889 +/- 0.06 kHz
Line:	 Hlt2RD_JpsiTo4E_LineDecision                     	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_JpsiTo4Mu_LineDecision                    	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_JpsiToMu3E_LineDecision                   	 Incl: 0.13348461589801777 +/- 0.09 kHz, Excl: 0.13348461589801777 +/- 0.09 kHz
Line:	 Hlt2RD_LowMassTo2Mu2E_LineDecision               	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_LowMassTo2Mup2Em_LineDecision             	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_LowMassTo3MuE_LineDecision                	 Incl: 0.06674230794900889 +/- 0.06 kHz, Excl: 0.06674230794900889 +/- 0.06 kHz
Line:	 Hlt2RD_LowMassTo4E_LineDecision                  	 Incl: 0.13348461589801777 +/- 0.09 kHz, Excl: 0.13348461589801777 +/- 0.09 kHz
Line:	 Hlt2RD_LowMassTo4Mu_LineDecision                 	 Incl: 0.06674230794900889 +/- 0.06 kHz, Excl: 0.06674230794900889 +/- 0.06 kHz
Line:	 Hlt2RD_LowMassToMu3E_LineDecision                	 Incl: 0.06674230794900889 +/- 0.06 kHz, Excl: 0.06674230794900889 +/- 0.06 kHz
Line:	 Hlt2RD_Psi2SToJpsiPiPi_JpsiTo2Mu2E_LineDecision  	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_Psi2SToJpsiPiPi_JpsiTo2Mup2Em_LineDecision	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_Psi2SToJpsiPiPi_JpsiTo3MuE_LineDecision   	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_Psi2SToJpsiPiPi_JpsiTo4E_LineDecision     	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_Psi2SToJpsiPiPi_JpsiTo4Mu_LineDecision    	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_Psi2SToJpsiPiPi_JpsiToMu3E_LineDecision   	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_UpsilonTo2Mu2E_LineDecision               	 Incl: 0.06674230794900889 +/- 0.06 kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_UpsilonTo2Mup2Em_LineDecision             	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_UpsilonTo3MuE_LineDecision                	 Incl: 0.13348461589801777 +/- 0.09 kHz, Excl: 0.06674230794900889 +/- 0.06 kHz
Line:	 Hlt2RD_UpsilonTo4E_LineDecision                  	 Incl: 0.06674230794900889 +/- 0.06 kHz, Excl: 0.06674230794900889 +/- 0.06 kHz
Line:	 Hlt2RD_UpsilonTo4Mu_LineDecision                 	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_UpsilonToMu3E_LineDecision                	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
----------------------------------------------------------------------------------------------------
Hlt2 Total:                                                   Rate:	 1 +/- 0.2 kHz
----------------------------------------------------------------------------------------------------

Testing the rate of the Hlt2RD_LowMassTo4Mu_Line using the phi->4mu simulation with the CanRecoChildren denominator:

Line:	 phi_Hlt2RD_LowMassTo4Mu_LineDecisionTrueSim	 Efficiency:	 0.051 +/- 0.007

(this is the best I can get without exploding the rate – mostly because the phi's are normally rather low-pT and a simple kinematic effect from the sum of muon momenta, given the PID cuts, is the main limitation in efficiency). On the phi->2mu2e simulation,

Line:	 phi_Hlt2RD_LowMassTo2Mu2E_LineDecisionTrueSim	 Efficiency:	 0.024 +/- 0.006

We unfortunately do not have MC for quarkonia decays (due to miscommunication some time ago), but there the efficiency should be larger.

Depends on !1454 (merged).

added RD label

assigned to @msaur, @yafan, and @fevolle

added RTA hlt2 labels

requested review from @msaur, @fevolle, and @yafan

assigned to @vlisovsk and unassigned @msaur, @yafan, and @fevolle

added 4 commits

• 8300d28a - more ideas
• 4b69e876 - initial version of the B23lnu lines
• 39d54d02 - undo the previous commit
• bf74f3fd - playing with cuts

Compare with previous version

changed the description

added 1 commit

• 6a324899 - pipeline

Compare with previous version

mentioned in merge request !1297 (merged)

Hi @vlisovsk , please do not forget to register your lines in the init file. The rates are a bit higher for the Hlt2RD_LowMassToEEEE_LineDecision line, but it's still okay.

mentioned in commit e082cd71

mentioned in commit b92d755e

requested review from @hvc, @tmombach, and @mmulder