Add Hlt2RD_LbToPpKmPipPimMuMu_MVA line

Add Hlt2RD_LbToPpKmPipPimMuMu_MVA line. Used for searching for rare decay \Lambda_{b}\to p K^-\pi^+\pi^-\mu^+\mu^-, optimized using MVA method

Bandwidth and rate

Tested with scripts in rd-rta-guide/testing-utils

Only this line:

	file size	bandwidth	rate
No MVA	0.22 MB	2.98 MB/s	108.44 Hz
With MVA	0.0 MB	0.0 MB/s.	0.0 Hz

All RD turbo lines:

	file size	bandwidth
rd-devel-june25	30 MB	406.6413 MB/s
This MR	30 MB	406.6413 MB/s

Got same total bandwidth. The rate comparison is here: compare_rate.log

Selection

Much looser cut compare to Hlt2RD_LbToPpKmPipPimMuMu, especially pions cuts

Background suppressed by a BDT

All cuts are summarized in following tables:

Particles	Variable	Value
All final states	isLong	true

Particles	Variable	Value
Muon	isMuon	true
	p_{\mathrm{T}}	>250\mathrm{MeV}/c
	p	>3000\mathrm{MeV}/c
	\chi^2_{\mathrm{IP}}	>4
	\mathrm{PID}_{\mu}	>2

Particles	Variable	Value
DiMuon	Mass	[200, 5400]\mathrm{MeV}/c^2
	p_{\mathrm{T}}	>0\mathrm{MeV}/c
	\chi^2_{\mathrm{DOCA}}	<20
	\chi^2_{\mathrm{vtx}}/\mathrm{ndof}	<10
	\chi^2_{\mathrm{FD}}	>20

Particles	Variable	Value
Pion	hasRich	true
	p_{\mathrm{T}}	>0\mathrm{MeV}/c
	\chi^2_{\mathrm{IP}}	>4
	\mathrm{PID}_{K}	<-1

Particles	Variable	Value
DiPion	Mass	[0, 4000]\mathrm{MeV}/c^2
	p_{\mathrm{T}}	>0\mathrm{MeV}/c
	\chi^2_{\mathrm{DOCA}}	<20
	\chi^2_{\mathrm{vtx}}/\mathrm{ndof}	<9

Particles	Variable	Value
Proton	hasRich	true
	p_{\mathrm{T}}	>300\mathrm{MeV}/c
	p	>9\mathrm{GeV}/c
	\chi^2_{\mathrm{IP}}	>4
	\mathrm{PID}_{p}	>0
	\mathrm{PID}_{p}-\mathrm{PID}_{K}	>-2

Particles	Variable	Value
Kaon	hasRich	true
	p_{\mathrm{T}}	>250\mathrm{MeV}/c
	p	>3.0\mathrm{GeV}/c
	\chi^2_{\mathrm{IP}}	>4
	\mathrm{PID}_{K}	>0

Particles	Variable	Value
pK^-\pi^+\pi^-	Mass	[0, 5.5]\mathrm{GeV}/c^2
	\Sigma p_{\mathrm{T}}	>1.5\mathrm{GeV}/c
	\Sigma \chi^{2}_{\mathrm{IP}}	>20.0
	\mathrm{max}(\chi^{2}_{\mathrm{DOCA}})	< 20
	\chi^2_{\mathrm{vtx}}/\mathrm{ndof}	< 16

Particles	Variable	Value
\Lambda_b	Mass	[4800, 6900]\mathrm{MeV}/c^2
	p_{\mathrm{T}}	>2500\mathrm{MeV}/c
	\chi^2_{\mathrm{vtx}}	<25
	\mathrm{DIRA}	>0.995
	\chi^2_{\mathrm{IP}}	<25
	\chi^2_{\mathrm{FD}}	>40
	\chi^2_{\mathrm{DOCA}}	>25

BDT

BDT trained with:

• Bkg proxy: Hlt2RD_LbToPpKmPipPimMuMu sideband <5100 MeV, >6100 MeV
• Sig proxy: 2016,2017,2018 MC

Train variables:

• p_{\mathrm{T}} of all final states except pions
• Logarithm of \chi^2_{\mathrm{IP}} of all final states and \Lambda_b
• Sum of p_{\mathrm{T}} of hadronic final states
• Logarithm of sum of \chi^2_{\mathrm{IP}} of all hadronic final states

Working point: -0.1

Weight file: lhcb-datapkg/ParamFiles!154 (merged)

BDT response: