Sebastian Ordoñez
jsordonezs@unal.edu.co
27th of April 2021
In the data-driven background estimation we employ models reliying on three statistically independent regions: SR, CR and VR.
VR
SR
CR
FF apply
FF test
We introduce the following four categories for our analysis. In truth level we define:
In reco level we have:
In the new definition for the trilepton Validation Region we require the events to:
?
We need to guarantee that fake muons have a \(p_{T}>27\) GeV in order to be able to apply the fake factor
Closure Test →
\(l\)
\(l\)
\(l\)
\(\mp\)
\(\pm\)
\(\pm\)
A|N
A|N
A|N
\(l\)
\(l\)
\(l\)
\(\pm\)
\(\pm\)
\(\mp\)
A
A
A|N
\(p_{T}>15\) GeV
[2]
[1]
[0]
\(\mu\)
\(\mu\)
\(e\)
A
A|N
A
\(\pm\)
\(\pm\)
\(\mp\)
[2]
[1]
[0]
\(p_{T}>15\) GeV
\(e\)
\(\mu\)
\(\mu\)
A
A|N
A
\(\mp\)
\(\pm\)
\(\pm\)
\(\pm\)
\(\pm\)
\(\pm\)
A
A|N
A
\(\mu\)
\(e\)
\(\mu\)
\(\mu\)
\(\pm\)
A
\(e\)
\(\pm\)
A
A|N
\(\mu\)
\(\pm\)
[0]
[2]
[1]
\(p_{T}>15\) GeV
\(\pm\)
\(\pm\)
A
A
A|N
\(e\)
\(\mu\)
\(\mu\)
[0]
[2]
[1]
\(\pm\)
\(p_{T}>15\) GeV
Employing this definition we guarantee that one of the muons is quite likely to be non-prompt. We remove a lot of events coming from \(Z+jets\), \(W+jets\) and \(WZ\) processes, and at the end we are able to apply the fake factor \(F\).
By applying the previous selection we would like to have:
Ana leptons
Non-Ana leptons
Let us take a closer look to a physical distribution again, but this time explicitly for Ana events.
MET for Non-Ana events
MET for Ana events
The contribution of non-prompt muons is about ~50%
The contribution of non-prompt for the LowMjj was about ~20%
MET for Non-Ana events
MET for Ana events
MET for Non-Ana events
MET for Ana events
MET for Ana and Non-Ana events
MET for only Ana events
MET for Ana and Non-Ana events
MET for only Ana events
MET for Ana and Non-Ana events
MET for only Ana events
Condition: At least one fake lepton and \(pT>27\)
?
Closure Test
1: Leading fake muon
2: Subleading fake muon
Non-prompt electrons in the Signal Region come mainly from Light Flavor Decay related to \(W+jets\) and also there is a significant contribution of B Hadron Decay associated to \(t\bar{t}\).
Since we need to guarantee a composition closer to that of the Signal Region and we want to employ a trilepton electron Validation Region, we will require: