Check PID cuts

  • proton PID variables (PROBNNp) for Run I KK seem to have a cut already applied.
  • This came up when we were calculating efficiencies in order to have a rough estimate of the impact of these cuts in the fit yields. 

Below all years 

Bs2KsKK Monte Carlo

DD-PrincipalPeak

DD-SecondaryPeak

LL-PrincipalPeak

LL-SecondaryPeak

B2KsKK Data

DD-PrincipalPeak

Below all years 

DD-SecondaryPeak

LL-PrincipalPeak

LL-SecondaryPeak

Check PID cuts for 2018 SecondaryPeak

B2KsKK Data

Below log scale

DD-SecondaryPeak

B2KsKK Data

DD-SecondaryPeak

B2KsKK Data

Below log scale

LL-SecondaryPeak

B2KsKK Data

LL-SecondaryPeak

Check MVA cuts for 2018 SecondaryPeak

Bs2KsKK Monte Carlo

DD-SecondaryPeak

Bs2KsKK Monte Carlo

LL-SecondaryPeak

B2KsKK Data

Below log scale

DD-SecondaryPeak

B2KsKK Data

B2KsKK Data

Below log scale

LL-SecondaryPeak

B2KsKK Data

LL-SecondaryPeak

B2KKKS Homemade Fit 

1. Fits without any additional cuts respect to the ANAnote, i.e., here PROBNNp > 0.9

DD-SecondaryPeak

LL-SecondaryPeak

Let's compare the ANAnote yields with those from our homemade fits.

Homemade fit:

ANAnote fit:

DD-SecondaryPeak

2. Fits changing the PROBNNp > 0.9 cut by PROBNNp > 0.5

LL-SecondaryPeak

DD-SecondaryPeak

3. Fits for 2018, adding the MVA cuts on top of the PROBNNp > 0.5 cut

LL-SecondaryPeak

DD-SecondaryPeak

1.

1.

2.

3.

LL-SecondaryPeak

1.

2.

3.

B2KKKS efficiencies after PROBNNp < 0.5 cut

Results before the cut (ANAnote)

Bs2KSKK-Secondary peak

Results after the cut PROBNNp < 0.5

Results before the cut (ANAnote)

Bd2KSKK-Secondary peak

Results after the cut PROBNNp < 0.5

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y
z
x
\vec{p_{T}}
\vec{p}
\theta
\text{FD}
\text{PV}
\text{SV}
\alpha
\vec{p}
h
h
h
\text{IP}
Proton
Proton
\text{PV}
\text{SV}
\mu^{+}
p
\bar{p}
B_{c}^{+}
p
p
J/\psi, \eta_{c}
\bar{c}
c
\text{LHCb MC}
\sqrt{s} = 14
\text{TeV}
\theta_{2} \text{[rad]}
\theta_{1} \text{[rad]}
\text{LHCb MC}
\sqrt{s} = 14
\text{TeV}
b
\bar{b}
z
\theta_{1}
\theta_{2}
B_{c}^{+}
W^{+}
l^{+}=\mu^{+},\tau^{+}
\nu_{l}
c
\bar{b}
c
\bar{c}
J/\psi, \eta_{c}
D^{+}
D^{+}
c
c
\bar{d}
\bar{d}
W^{+}
u
u
u
\bar{s}
\bar{d}
d
\bar{s}
\bar{s}
\bar{u}
s
K^{+}
K^{-}K^{+}
K^{+}
K^{+}
K^{-}
W^{+}

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