-- PritamKalbhor - 2020-10-04

Angular analysis for $B_s^0 \rightarrow \phi \mu^+\mu^-$ at 13 TeV

Angular analysis for $B_s^0 \rightarrow \phi \mu^+\mu^-$ at 13 TeV

Introduction

This is a dedicated Twiki page for the BPH-**-*** analysis: Angular analysis for $B_s^0 \rightarrow \phi \mu\mu$ decay with the CMS experiment in pp collisions at sqrt(s) = 13 TeV. Analysis note can be found at AN-18-068

Analysis Codes

Reconstruction, Selector code: https://gitlab.cern.ch/ckar/bstophimumu-angular-analysis/-/tree/master
BDT Optimization(FOM Scan): https://gitlab.cern.ch/ckar/bstophimumu-angular-analysis/-/blob/master/BsToPhiMuMu/plugins/significance_scan.cc
Fitter code : https://gitlab.cern.ch/pkalbhor/bstophimumufitter/-/tree/Dev
Relative BF Validation: https://github.com/rishabh-raturi/bstophimumu_optimization

NTuples location as on 5th Octorber 2020

2016 Files at: /eos/home-c/ckar/BSTOPHIMUMU/FileForGroup/AfterBDT_Training_2016/

2017 Files at: /eos/home-c/ckar/BSTOPHIMUMU/FileForGroup/AfterBDT_Training_2017/

2018 Files at: /eos/home-c/ckar/BSTOPHIMUMU/FileForGroup/AfterBDT_Training_2018/

All unfiltered Samples at: /eos/home-c/ckar/BSTOPHIMUMU/FileForGroup/private_sample/

The below table shows the unique sequence in the file names for each year. This will help you find the correct file name along with the path.
If multiple files present containing the same sequence then they are to be added to TChain

Sample Type	Process	2016	2017	2018
Data		`sel_Combine_2016_Mini_Presel_data_`	`sel_Combine_2017_Mini_Presel_data_`	`sel_Combine_2018_Mini_Presel_data_`
Signal MC	`BsToPhiMuMu`	`sel_BsToPhiMuMu_OfficialMC_signal_2016M`	`sel_BsToPhiMuMu_OfficialMC_signal_2017M`	`sel_BsToPhiMuMu_OfficialMC_signal_2018M`
Control Channels MC	`BsToJpsiPhi`	`sel_BsToJpsiPhi_2016MC_Official`	`sel_BsToJpsiPhi_2017MC_Official`	`sel_BsToJpsiPhi_2018MC_Official`
Control Channels MC	`BsToPsiPhi`	`sel_BsToPsiPhi_2016MC_Official`	`sel_BsToPsiPhi_2017MC_Official`	`sel_BsToPsiPhi_2018MC_Official`
Peaking Background MC	`BdToKstarMuMu`	`sel_BdToKstarMuMu_2016MC_Official`	`sel_BdToKstarMuMu_2017MC_Official`	`sel_BdToKstarMuMu_2018MC_Official`
	`BdToJpsiKstar`	`sel_BdToJpsikstar_2016MC_Official`	`sel_BdToJpsikstar_2017MC_Official`	`sel_BdToJpsikstar_2018MC_Official`
	`BdToPsiKstar`	-	`sel_BdToPsiKstar_2017MC_Official`	`sel_BdToPsiKstar_2018MC_Official`
UnFiltered Samples MC	`BsToPhiMuMu`	`sel_BsToPhiMuMu_2016MC`	`sel_BsToPhiMuMu_NofilterMC_signal_2017_mc`	`sel_BsToPhiMuMu_NofilterMC_signal_2018_mc`
	`BsToJpsiPhi`	`sel_BsToJpsiPhi_2016_mc`	`sel_BsToJpsiPhi_2017_mc`	`sel_BsToJpsiPhi_2018_mc`
	`BsToPsiPhi`	`sel_BsToPsiPhi_2016_mc`	`sel_BsToPsiPhi_2017_mc`	`sel_BsToPsiPhi_2018_mc`

GEN level files for official BsToPhiMuMu MC samples are at:

2016: All the files from /eos/home-c/ckar/BSTOPHIMUMU/FileForGroup/AfterBDT_Training_2016/gentree_Phimumu/
2017: All the files from /eos/home-c/ckar/BSTOPHIMUMU/FileForGroup/AfterBDT_Training_2017/gentree_Phimumu/
2018: All the files from /eos/home-c/ckar/BSTOPHIMUMU/FileForGroup/AfterBDT_Training_2018/gentree_Phimumu/

Selection cuts

Gen Level Selections:
- For Muons: and $|\eta| &lt; 2.4$
- For Kaons: and $|\eta|&lt;2.5$
Final Selections:
- Trigger cuts:
- High Quality Tracks: $mtrkqual==1 $ $\&\&$ $ ptrkqual==1 $ $\&\&$ $ dr0<0.1 $ $\&\&$ $ dr1<0.1$
- Anti-Radiation Cut: $|M_B-M_{\mu\mu}-2.270| &gt; 0.120$ $\&\&$ $|M_B-M_{\mu\mu}-1.681|&gt;0.090$
- 2016:
- 2017:
- 2018:

Exotica and Rare Decay Meeting Presentations

Monday 24 Feb 2020 : https://indico.cern.ch/event/887379/
Monday 4 May 2020 : https://indico.cern.ch/event/914453/
Wednesday 15 Jul 2020 : https://indico.cern.ch/event/935003/

Timeline

Previous meetings:
- Wednesday 20 Nov 2019 : https://indico.cern.ch/event/865598/
- Wednesday 19 Feb 2020 : https://indico.cern.ch/event/890564/
- Monday 13 Apr 2020 : https://indico.cern.ch/event/909002/
- Friday 1 May 2020 : https://indico.cern.ch/event/915187/
- Monday 29 May 2020 : https://indico.cern.ch/event/924120/
- Monday 30 Jun 2020 : https://indico.cern.ch/event/928977/
- Monday 6 Jul 2020 : https://indico.cern.ch/event/936424/
4th October: New ntuples produced after removing bugs in the code where nearly half of the events were left out of the output file.
- Friday 9th Oct 2020 : https://indico.cern.ch/event/964450/
15th October: Fits are not matching. We might have events in signal region. Steps to be taken to take into account this contribution.
- Friday 16th Oct 2020 : https://indico.cern.ch/event/966886/
23rd October: No clear sign of peaking background due to found. Issue is still pending.
- Friday 23rd Oct 2020 : https://indico.cern.ch/event/968867/

Topic revision: r1 - 2020-10-23 - PeterJones

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