Update HLT2 and Sprucing lines B -> X tau l

MR updated and ready to be reviewed.

This MR aims at:

• Introduce B0 -> Ks0 tau l lines
• Prepared also downstream tracks lines for Lambda and Ks (now in backup branch following !1399 (comment 5939082))
• Remove unnecessary lines (no differences in selecting B0 and B_s0 events)
• Persist reconstruction information
• Spruce from related HLT2 line
• Improve efficiencies for B0 -> K* tau l, used as a reference, keeping the same (or possibly lower) rates.

TODO:

• Evaluate rates for the latest introduced lines
• Compute efficiency and rates after changes on the requirements
• Add DD tracks for decays with Ks and Lambda

Rates

HLT rates: 
--------------------------------------------------------------------------------------------------------------
Line:	 Hlt2RD_BdToEtapTauE_EtapToPiPiGamma_TauTo3Pi_OSDecision  	 Incl: 0.06674 +/- 0.0667 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BdToEtapTauE_EtapToPiPiGamma_TauTo3Pi_SSDecision  	 Incl: 0.06674 +/- 0.0667 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BdToEtapTauMu_EtapToPiPiGamma_TauTo3Pi_OSDecision 	 Incl: 0.0 +/- 0.0 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BdToEtapTauMu_EtapToPiPiGamma_TauTo3Pi_SSDecision 	 Incl: 0.0 +/- 0.0 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BdToEtapTauTau_EtapToPiPiGamma_TauTo3Pi_OSDecision	 Incl: 0.0 +/- 0.0 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BdToEtapTauTau_EtapToPiPiGamma_TauTo3Pi_SSDecision	 Incl: 0.06674 +/- 0.0667 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BdToKsTauE_KsLLToPiPi_TauTo3Pi_OSDecision         	 Incl: 0.20022 +/- 0.1155 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BdToKsTauE_KsLLToPiPi_TauTo3Pi_SSDecision         	 Incl: 0.06674 +/- 0.0667 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BdToKsTauMu_KsLLToPiPi_TauTo3Pi_OSDecision        	 Incl: 0.13348 +/- 0.0943 kHz,	Excl: 0.06674 +/- 0.0667 kHz
Line:	 Hlt2RD_BdToKsTauMu_KsLLToPiPi_TauTo3Pi_SSDecision        	 Incl: 0.06674 +/- 0.0667 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BdToKsTauTau_KsLLToPiPi_TauTo3Pi_OSDecision       	 Incl: 0.06674 +/- 0.0667 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BdToKsTauTau_KsLLToPiPi_TauTo3Pi_SSDecision       	 Incl: 0.13348 +/- 0.0943 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BdToKstTauE_KstToKPi_TauTo3Pi_OSDecision          	 Incl: 0.13348 +/- 0.0943 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BdToKstTauE_KstToKPi_TauTo3Pi_SSDecision          	 Incl: 0.06674 +/- 0.0667 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BdToKstTauMu_KstToKPi_TauTo3Pi_OSDecision         	 Incl: 0.06674 +/- 0.0667 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BdToKstTauMu_KstToKPi_TauTo3Pi_SSDecision         	 Incl: 0.0 +/- 0.0 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BdToKstTauTau_KstToKPi_TauTo3Pi_OSDecision        	 Incl: 0.0 +/- 0.0 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BdToKstTauTau_KstToKPi_TauTo3Pi_SSDecision        	 Incl: 0.0 +/- 0.0 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BdToPhiTauE_PhiToKK_TauTo3Pi_OSDecision           	 Incl: 0.0 +/- 0.0 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BdToPhiTauE_PhiToKK_TauTo3Pi_SSDecision           	 Incl: 0.0 +/- 0.0 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BdToPhiTauMu_PhiToKK_TauTo3Pi_OSDecision          	 Incl: 0.0 +/- 0.0 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BdToPhiTauMu_PhiToKK_TauTo3Pi_SSDecision          	 Incl: 0.0 +/- 0.0 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BdToPhiTauTau_PhiToKK_TauTo3Pi_OSDecision         	 Incl: 0.0 +/- 0.0 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BdToPhiTauTau_PhiToKK_TauTo3Pi_SSDecision         	 Incl: 0.0 +/- 0.0 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BdToRhoTauE_RhoToPiPi_TauTo3Pi_OSDecision         	 Incl: 0.06674 +/- 0.0667 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BdToRhoTauE_RhoToPiPi_TauTo3Pi_SSDecision         	 Incl: 0.06674 +/- 0.0667 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BdToRhoTauMu_RhoToPiPi_TauTo3Pi_OSDecision        	 Incl: 0.0 +/- 0.0 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BdToRhoTauMu_RhoToPiPi_TauTo3Pi_SSDecision        	 Incl: 0.0 +/- 0.0 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BdToRhoTauTau_RhoToPiPi_TauTo3Pi_OSDecision       	 Incl: 0.0 +/- 0.0 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BdToRhoTauTau_RhoToPiPi_TauTo3Pi_SSDecision       	 Incl: 0.0 +/- 0.0 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BuToK1plTauE_K1plTo3Pi_TauTo3Pi_OSDecision        	 Incl: 0.13348 +/- 0.0943 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BuToK1plTauE_K1plTo3Pi_TauTo3Pi_SSDecision        	 Incl: 0.06674 +/- 0.0667 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BuToK1plTauMu_K1plTo3Pi_TauTo3Pi_OSDecision       	 Incl: 0.0 +/- 0.0 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BuToK1plTauMu_K1plTo3Pi_TauTo3Pi_SSDecision       	 Incl: 0.0 +/- 0.0 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BuToK1plTauTau_K1plTo3Pi_TauTo3Pi_OSDecision      	 Incl: 0.0 +/- 0.0 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BuToK1plTauTau_K1plTo3Pi_TauTo3Pi_SSDecision      	 Incl: 0.06674 +/- 0.0667 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BuToKplTauE_TauTo3Pi_OSDecision                   	 Incl: 0.13348 +/- 0.0943 kHz,	Excl: 0.06674 +/- 0.0667 kHz
Line:	 Hlt2RD_BuToKplTauE_TauTo3Pi_SSDecision                   	 Incl: 0.06674 +/- 0.0667 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BuToKplTauMu_TauTo3Pi_OSDecision                  	 Incl: 0.06674 +/- 0.0667 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BuToKplTauMu_TauTo3Pi_SSDecision                  	 Incl: 0.13348 +/- 0.0943 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_BuToKplTauTau_TauTo3Pi_OSDecision                 	 Incl: 0.13348 +/- 0.0943 kHz,	Excl: 0.06674 +/- 0.0667 kHz
Line:	 Hlt2RD_BuToKplTauTau_TauTo3Pi_SSDecision                 	 Incl: 0.06674 +/- 0.0667 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_LbToLambdaTauE_LambdaLLToPPi_TauTo3Pi_OSDecision  	 Incl: 0.06674 +/- 0.0667 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_LbToLambdaTauE_LambdaLLToPPi_TauTo3Pi_SSLDecision  	 Incl: 0.0 +/- 0.0 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_LbToLambdaTauMu_LambdaLLToPPi_TauTo3Pi_OSDecision 	 Incl: 0.0 +/- 0.0 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_LbToLambdaTauMu_LambdaLLToPPi_TauTo3Pi_SSDecision 	 Incl: 0.0 +/- 0.0 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_LbToLambdaTauTau_LambdaLLToPPi_TauTo3Pi_OSDecision	 Incl: 0.06674 +/- 0.0667 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_LbToLambdaTauTau_LambdaLLToPPi_TauTo3Pi_SSDecision	 Incl: 0.06674 +/- 0.0667 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_LbToPKTauE_TauTo3Pi_OSLineDecision                    	 Incl: 0.13348 +/- 0.0943 kHz,	Excl: 0.06674 +/- 0.0667 kHz
Line:	 Hlt2RD_LbToPKTauE_TauTo3Pi_SSDecision                    	 Incl: 0.06674 +/- 0.0667 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_LbToPKTauMu_TauTo3Pi_OSDecision                   	 Incl: 0.0 +/- 0.0 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_LbToPKTauMu_TauTo3Pi_SSDecision                   	 Incl: 0.06674 +/- 0.0667 kHz,	Excl: 0.0 +/- 0.0 kHz
Line:	 Hlt2RD_LbToPKTauTau_TauTo3Pi_OSDecision                  	 Incl: 0.13348 +/- 0.0943 kHz,	Excl: 0.06674 +/- 0.0667 kHz
Line:	 Hlt2RD_LbToPKTauTau_TauTo3Pi_SSDecision                  	 Incl: 0.0 +/- 0.0 kHz,	Excl: 0.0 +/- 0.0 kHz
--------------------------------------------------------------------------------------------------------------
Hlt2 Total:                                                               Rate:	 1 +/- 0.3 kHz
--------------------------------------------------------------------------------------------------------------

Signal rates

The new requirements introduced in this MR aims at improving the selection efficiencies for all the channels and the B->K* tau l is taken as reference for this purpose.

The signal rates are evaluated without MC matching on 10K events for each MC signal sample.

MC Signal	Eventtype	Line	SR [%]	CanRecoChildren
B->K* tau tau	11100014	Hlt2RD_BToKstTauTau_KstToKPi_TauTo3Pi_OSLine	0.4900000 +- 0.0698283	0.037 +/- 0.007
B->K* tau tau	11100014	Hlt2RD_BToKstTauTau_KstToKPi_TauTo3Pi_SSLine	0.1600000 +- 0.0399680	0.010 +/- 0.004
B->K* tau mu	11110010	Hlt2RD_BToKstTauMu_KstToKPi_TauTo3Pi_OSLine	n.a.	n.a.
B->K* tau mu	11110010	Hlt2RD_BToKstTauMu_KstToKPi_TauTo3Pi_SSLine	n.a.	n.a.
B->K* tau e	11123000	Hlt2RD_BToKstTauE_KstToKPi_TauTo3Pi_OSLine	0.8600000 +- 0.0923366	0.058 +/- 0.008
B->K* tau e	11123000	Hlt2RD_BToKstTauE_KstToKPi_TauTo3Pi_SSLine	0.2700000 +- 0.0518913	0.016 +/- 0.004

Signal rates for B->K* tau mu not yet evaluated because of #402 (closed)

PS: At the moment, sprucing is not introducing any additional selection wrt HLT2. Hope to add soon additional information from FT and isolation.

FYI: @fpolci, @vincentp

Related to DPA task https://gitlab.cern.ch/lhcb-dpa/project/-/issues/78 on ensemble of Sprucing lines.