Include missing HLT2 lines for strange decays

Following !1527 (merged), this MR aims at implementing remaining lines described in https://arxiv.org/abs/1808.03477 for decays that are of interest from the theoretical point of view and that can be studied at LHCb. Here we implement (including charge-conjugate processes):

Remaining lines for kaon decays

• $K_S^0\to\pi^+\ell^-\bar{\nu}_\ell$
• $K_S^0\to\ell^+(\pi^+)\ell^-(\pi^-)\ell^{(\prime)+}\ell^{(\prime)-}$
• $K_S^0\to (X^0)\mu^+\mu^-$
• $K^+\to\pi^+\ell^-\ell^+$

Lines on Hyperon decays

• $\Lambda\to p\ell^-\bar{\nu}_\ell$
• $\Sigma^+\to p\ell^{(\prime)+}\ell^-$
• $\Xi^0\to p\pi^-$
• $\Xi^-\to p\pi^-\pi^-$
• $\Xi^-\to \Lambda \ell^- (\bar{\nu}_\ell~)$
• $\Omega^-\to\Lambda\pi^-$

Together with different control/normalization modes.

Supersedes !1256 (closed)

added RD hlt2 labels

changed the description

added RTA label

@tmombach, @cmarinbe, @msaur this implements the remaining set of lines to study strange decays that have not been included so far. It might be good to discuss throughout this week the implementation and the physics coverage.

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• 7391bb64 - Centralize mass bounds. Add [KS0 -> pi+ mu-]cc and LFV four-body decays

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assigned to @mramospe

requested review from @tmombach and @msaur

requested review from @fevolle and @htilquin

This looks all very good! Thank you for the implementation! Let us know when you have the rates ready (and some efficiencies). I was wondering only about one additional decay: what about KS2pienu? This has a high rate and might be used for single electron PID studies possibly (additional to KS2pipiee, which is also nice, but has a much lower rate).

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• a3bfbdd4 - Include [KS0 -> pi+ e- nu_e~]cc lines. Relax requirements for charged particles.
• f17affbe - Modify PID thresholds for electrons and muons

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• 5dcb2b40 - Use a dielectron-maker for K+ -> pi+ e+ e-. Fix particle name.

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• 34911cac - Add a prescale to the K+ -> pi+ pi- pi+ line

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mentioned in merge request !1256 (closed)

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• ec04510d - Improve documentation. Add signal semileptonic KS0 lines.

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Updated rates:

Line:	 Hlt2RD_KS0ToEEEE_IntermediateNeutral_LineDecision    	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_KS0ToEEEE_LineDecision                        	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_KS0ToEE_LineDecision                          	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_KS0ToEE_SS_LineDecision                       	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_KS0ToEMu_LineDecision                         	 Incl: 0.20022692384702662 +/- 0.11 kHz, Excl: 0.20022692384702662 +/- 0.11 kHz
Line:	 Hlt2RD_KS0ToEMu_SS_LineDecision                      	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_KS0ToMuMuEE_IntermediateNeutral_LineDecision  	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_KS0ToMuMuEE_LineDecision                      	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_KS0ToMuMuEMu_IntermediateNeutral_LineDecision 	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_KS0ToMuMuEMu_LineDecision                     	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_KS0ToMuMuMuMu_IntermediateNeutral_LineDecision	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_KS0ToMuMuMuMu_LineDecision                    	 Incl: 0.06674230794900889 +/- 0.06 kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_KS0ToMuMu_LineDecision                        	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_KS0ToMuMu_SB_LineDecision                     	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_KS0ToMuMu_SS_LineDecision                     	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_KS0ToPiE_LineDecision                         	 Incl: 0.06674230794900889 +/- 0.06 kHz, Excl: 0.06674230794900889 +/- 0.06 kHz
Line:	 Hlt2RD_KS0ToPiE_Loose_LineDecision                   	 Incl: 0.06674230794900889 +/- 0.06 kHz, Excl: 0.06674230794900889 +/- 0.06 kHz
Line:	 Hlt2RD_KS0ToPiE_Tight_LineDecision                   	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_KS0ToPiMu_LineDecision                        	 Incl: 0.13348461589801777 +/- 0.09 kHz, Excl: 0.13348461589801777 +/- 0.09 kHz
Line:	 Hlt2RD_KS0ToPiMu_Loose_LineDecision                  	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_KS0ToPiMu_Tight_LineDecision                  	 Incl: 0.13348461589801777 +/- 0.09 kHz, Excl: 0.13348461589801777 +/- 0.09 kHz
Line:	 Hlt2RD_KS0ToPiPiEE_LineDecision                      	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_KS0ToPiPiMuMu_LineDecision                    	 Incl: 0.26696923179603554 +/- 0.13 kHz, Excl: 0.20022692384702662 +/- 0.11 kHz
Line:	 Hlt2RD_KS0ToPiPi_Detached_LineDecision               	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_KS0ToPiPi_Detached_Tight_LineDecision         	 Incl: 0.06674230794900889 +/- 0.06 kHz, Excl: 0.06674230794900889 +/- 0.06 kHz
Line:	 Hlt2RD_KS0ToPiPi_LineDecision                        	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_KS0ToPiPi_Loose_LineDecision                  	 Incl: 0.06674230794900889 +/- 0.06 kHz, Excl: 0.06674230794900889 +/- 0.06 kHz
Line:	 Hlt2RD_KS0ToX0MuMu_Inclusive_LineDecision            	 Incl: 0.06674230794900889 +/- 0.06 kHz, Excl: 0.06674230794900889 +/- 0.06 kHz
Line:	 Hlt2RD_KS0ToX0MuMu_SS_Inclusive_LineDecision         	 Incl: 0.06674230794900889 +/- 0.06 kHz, Excl: 0.06674230794900889 +/- 0.06 kHz
Line:	 Hlt2RD_KpToPiEE_LineDecision                         	 Incl: 0.13348461589801777 +/- 0.09 kHz, Excl: 0.13348461589801777 +/- 0.09 kHz
Line:	 Hlt2RD_KpToPiMuMu_LineDecision                       	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_KpToPiPiPi_LineDecision                       	 Incl: 0.06674230794900889 +/- 0.06 kHz, Excl: 0.06674230794900889 +/- 0.06 kHz
Line:	 Hlt2RD_Lambda0ToPE_LineDecision                      	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_Lambda0ToPMu_LineDecision                     	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_Lambda0ToPPiEE_LineDecision                   	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_Lambda0ToPPi_Detached_Tight_LineDecision      	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_Lambda0ToPPi_Loose_LineDecision               	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_OmegaMinusToLambdaK_LineDecision              	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_OmegaMinusToLambdaPi_LineDecision             	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_SigmaPlusToPEE_LineDecision                   	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_SigmaPlusToPMuMu_LineDecision                 	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_SigmaPlusToPPi0Merged_LineDecision            	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_SigmaPlusToPPi0Resolved_LineDecision          	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_Xi0ToLambdaPi0Merged_LineDecision             	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_Xi0ToLambdaPi0Resolved_LineDecision           	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_Xi0ToPPi_LineDecision                         	 Incl: 0.06674230794900889 +/- 0.06 kHz, Excl: 0.06674230794900889 +/- 0.06 kHz
Line:	 Hlt2RD_XiMinusToLambdaE_LineDecision                 	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_XiMinusToLambdaMu_LineDecision                	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_XiMinusToLambdaPi_LineDecision                	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz
Line:	 Hlt2RD_XiMinusToPPiPi_LineDecision                   	 Incl: 0.0  +/- 0.0  kHz, Excl: 0.0  +/- 0.0  kHz

approved this merge request

approved this merge request

marked this merge request as ready

Hello @dovombru, can we ask for a ci-test when resources will allow?

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• [2022-07-11 18:28] Validation started with lhcb-master-mr#4996

added hlt2-throughput-decreased label

Hi! Very nice that you added these channels. For some of hyperon decays, I had written Stripping lines for Run2, you can check the cuts in case you find them useful: Stripping!1639 (merged) (you can ignore the stupid Xi02PK as it is kinematically forbidden)

mentioned in issue #456 (closed)

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• 3dd567f0 - Add photon identification requirements to build neutral pions

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• 2ecdb099 - Remove useless import

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• [2022-07-27 14:06] Validation started with lhcb-master-mr#5224
• [2022-07-27 15:27] Validation started with lhcb-master-mr#5232

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• cc5a44dc - Update requirement on IS_NOT_H

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requested review from @sargueda

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• b0520c05 - Add missing [Sigma -> p e+ mu-]cc line

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mentioned in merge request !1226 (closed)

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• b4c132b6 - Fix requirements builder

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• a3b8c827 - Fix problem with empty selection

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• [2022-07-30 10:11] Validation started with lhcb-master-mr#5265

This MR will need to be aligned with !1730 (merged).

mentioned in issue #474 (closed)

mentioned in issue #478 (closed)

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• ffde51aa - Drop _Line from the HLT2 line names

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• ffde51aa...9ab1a02a - 501 commits from branch master
• 36a5b9a5 - Merge branch 'master' into mramospe-strange-lines

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• 191a4507 - Fix problems with vertex variables in track/neutral combinations

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