cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17182/hepdata.146693.v1/t231
title: "MM, $m^{t\bar{t}}$, particle, SR-3L-WZ" of "Inclusive and differential cross-section measurements of $t\bar{t}Z$ production in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector, including EFT and spin-correlation interpretations"

description: Migration matrix for $m^{t\bar{t}}$ variable at particle-level in region SR-3L-WZ.
description: Inclusive and differential cross section measurements of $t\bar{t}Z$ production in $pp$ collisions at $\sqrt{s}$=13 TeV with the ATLAS detector, including EFT and spin correlations interpretations

The fiducial regions for the dilepton channel are defined as:
- Exactly 2 leptons ($e$ or $\mu$) with transverse momentum greater than 30, 15 GeV for leading and subleading lepton, respectively.
- The sum of the two lepton charges is required to be zero.
- Exactly one opposite-sign-same-flavour (OSSF) lepton pair (considered to be lepton pair from $Z$ boson) with invaraint mass compatible with $Z$ boson ($|m_{\ell\ell}^{Z}-m_{Z}|&lt;10$ GeV).
- Three orthogonal signal regions defined based on the jet and $b$-jet multiplicity.
- At least 5 jets with transverse momentum greater than 25 GeV.
- $b$-jets requirements: at least one $b$-jet tagged with fixed 77% $b$-tagging working point.

The fiducial regions for the trilepton channel are defined as:
- Exactly 3 leptons ($e$ or $\mu$) with transverse momentum greater than 27, 20, 15 GeV for leading, subleading and third lepton, respectively.
- The sum of the three lepton charges is required to be $\pm$1.
- At least one opposite-sign-same-flavour (OSSF) lepton pair (considered to be lepton pair from $Z$ boson) with invaraint mass compatible with $Z$ boson ($|m_{\ell\ell}^{Z}-m_{Z}|&lt;10$ GeV) and $m_{OSSF}&gt;10$ GeV for each OSSF lepton pair.
- Three orthogonal signal regions combined for both inclusive and differential cross section measurements.
- At least 3 jets with transverse momentum greater than 25 GeV.
- $b$-jets requirements: at least one $b$-jet tagged with fixed 85% $b$-tagging working point.
- Signal regions definitions based on the values of the deep neural network discriminants and $b$-jets requirements.

The fiducial regions for the tetralepton channel are defined as:
- Exactly 4 leptons ($e$ or $\mu$) with transverse momentum greater than 27, 7, 7, 7 GeV for leading, subleading, third and fourth lepton, respectively.
- The sum of the four lepton charges is required to be zero.
- At least one opposite-sign-same-flavor (OSSF) lepton pair (considered to be lepton pair from $Z$ boson) with invaraint mass compatible with $Z$ boson ($|m_{\ell\ell}^{Z}-m_{Z}|&lt;20$ GeV) and $m_{OSSF}&gt;10$ GeV for each OSSF lepton pair.
- Four signal regions separated based on based on the flavour composition of the non-$Z$ lepton pair (same flavour, different flavour) and value of the deep neural network discriminant.
- At least 2 jets with transverse momentum greater than 25 GeV.
- At least one $b$-jet tagged with the 85% $b$-tagging working point.
DOI: 10.17182/hepdata.146693.v1/t233
title: "MM, $m^{t\bar{t}}$, particle, SR-4L-SF" of "Inclusive and differential cross-section measurements of $t\bar{t}Z$ production in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector, including EFT and spin-correlation interpretations"

description: Migration matrix for $m^{t\bar{t}}$ variable at particle-level in region SR-4L-SF.
description: Inclusive and differential cross section measurements of $t\bar{t}Z$ production in $pp$ collisions at $\sqrt{s}$=13 TeV with the ATLAS detector, including EFT and spin correlations interpretations

The fiducial regions for the dilepton channel are defined as:
- Exactly 2 leptons ($e$ or $\mu$) with transverse momentum greater than 30, 15 GeV for leading and subleading lepton, respectively.
- The sum of the two lepton charges is required to be zero.
- Exactly one opposite-sign-same-flavour (OSSF) lepton pair (considered to be lepton pair from $Z$ boson) with invaraint mass compatible with $Z$ boson ($|m_{\ell\ell}^{Z}-m_{Z}|&lt;10$ GeV).
- Three orthogonal signal regions defined based on the jet and $b$-jet multiplicity.
- At least 5 jets with transverse momentum greater than 25 GeV.
- $b$-jets requirements: at least one $b$-jet tagged with fixed 77% $b$-tagging working point.

The fiducial regions for the trilepton channel are defined as:
- Exactly 3 leptons ($e$ or $\mu$) with transverse momentum greater than 27, 20, 15 GeV for leading, subleading and third lepton, respectively.
- The sum of the three lepton charges is required to be $\pm$1.
- At least one opposite-sign-same-flavour (OSSF) lepton pair (considered to be lepton pair from $Z$ boson) with invaraint mass compatible with $Z$ boson ($|m_{\ell\ell}^{Z}-m_{Z}|&lt;10$ GeV) and $m_{OSSF}&gt;10$ GeV for each OSSF lepton pair.
- Three orthogonal signal regions combined for both inclusive and differential cross section measurements.
- At least 3 jets with transverse momentum greater than 25 GeV.
- $b$-jets requirements: at least one $b$-jet tagged with fixed 85% $b$-tagging working point.
- Signal regions definitions based on the values of the deep neural network discriminants and $b$-jets requirements.

The fiducial regions for the tetralepton channel are defined as:
- Exactly 4 leptons ($e$ or $\mu$) with transverse momentum greater than 27, 7, 7, 7 GeV for leading, subleading, third and fourth lepton, respectively.
- The sum of the four lepton charges is required to be zero.
- At least one opposite-sign-same-flavor (OSSF) lepton pair (considered to be lepton pair from $Z$ boson) with invaraint mass compatible with $Z$ boson ($|m_{\ell\ell}^{Z}-m_{Z}|&lt;20$ GeV) and $m_{OSSF}&gt;10$ GeV for each OSSF lepton pair.
- Four signal regions separated based on based on the flavour composition of the non-$Z$ lepton pair (same flavour, different flavour) and value of the deep neural network discriminant.
- At least 2 jets with transverse momentum greater than 25 GeV.
- At least one $b$-jet tagged with the 85% $b$-tagging working point.
DOI: 10.17182/hepdata.146693.v1/t234
title: "MM, $m^{t\bar{t}}$, particle, CR-4L-ZZ" of "Inclusive and differential cross-section measurements of $t\bar{t}Z$ production in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector, including EFT and spin-correlation interpretations"

description: Migration matrix for $m^{t\bar{t}}$ variable at particle-level in region CR-4L-ZZ.
description: Inclusive and differential cross section measurements of $t\bar{t}Z$ production in $pp$ collisions at $\sqrt{s}$=13 TeV with the ATLAS detector, including EFT and spin correlations interpretations

The fiducial regions for the dilepton channel are defined as:
- Exactly 2 leptons ($e$ or $\mu$) with transverse momentum greater than 30, 15 GeV for leading and subleading lepton, respectively.
- The sum of the two lepton charges is required to be zero.
- Exactly one opposite-sign-same-flavour (OSSF) lepton pair (considered to be lepton pair from $Z$ boson) with invaraint mass compatible with $Z$ boson ($|m_{\ell\ell}^{Z}-m_{Z}|&lt;10$ GeV).
- Three orthogonal signal regions defined based on the jet and $b$-jet multiplicity.
- At least 5 jets with transverse momentum greater than 25 GeV.
- $b$-jets requirements: at least one $b$-jet tagged with fixed 77% $b$-tagging working point.

The fiducial regions for the trilepton channel are defined as:
- Exactly 3 leptons ($e$ or $\mu$) with transverse momentum greater than 27, 20, 15 GeV for leading, subleading and third lepton, respectively.
- The sum of the three lepton charges is required to be $\pm$1.
- At least one opposite-sign-same-flavour (OSSF) lepton pair (considered to be lepton pair from $Z$ boson) with invaraint mass compatible with $Z$ boson ($|m_{\ell\ell}^{Z}-m_{Z}|&lt;10$ GeV) and $m_{OSSF}&gt;10$ GeV for each OSSF lepton pair.
- Three orthogonal signal regions combined for both inclusive and differential cross section measurements.
- At least 3 jets with transverse momentum greater than 25 GeV.
- $b$-jets requirements: at least one $b$-jet tagged with fixed 85% $b$-tagging working point.
- Signal regions definitions based on the values of the deep neural network discriminants and $b$-jets requirements.

The fiducial regions for the tetralepton channel are defined as:
- Exactly 4 leptons ($e$ or $\mu$) with transverse momentum greater than 27, 7, 7, 7 GeV for leading, subleading, third and fourth lepton, respectively.
- The sum of the four lepton charges is required to be zero.
- At least one opposite-sign-same-flavor (OSSF) lepton pair (considered to be lepton pair from $Z$ boson) with invaraint mass compatible with $Z$ boson ($|m_{\ell\ell}^{Z}-m_{Z}|&lt;20$ GeV) and $m_{OSSF}&gt;10$ GeV for each OSSF lepton pair.
- Four signal regions separated based on based on the flavour composition of the non-$Z$ lepton pair (same flavour, different flavour) and value of the deep neural network discriminant.
- At least 2 jets with transverse momentum greater than 25 GeV.
- At least one $b$-jet tagged with the 85% $b$-tagging working point.
DOI: 10.17182/hepdata.146693.v1/t235
title: "MM, $m^{t\bar{t}}$, parton, SR-3L-ttZ" of "Inclusive and differential cross-section measurements of $t\bar{t}Z$ production in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector, including EFT and spin-correlation interpretations"

description: Migration matrix for $m^{t\bar{t}}$ variable at parton-level in region SR-3L-ttZ.
description: Inclusive and differential cross section measurements of $t\bar{t}Z$ production in $pp$ collisions at $\sqrt{s}$=13 TeV with the ATLAS detector, including EFT and spin correlations interpretations

The fiducial regions for the dilepton channel are defined as:
- Exactly 2 leptons ($e$ or $\mu$) with transverse momentum greater than 30, 15 GeV for leading and subleading lepton, respectively.
- The sum of the two lepton charges is required to be zero.
- Exactly one opposite-sign-same-flavour (OSSF) lepton pair (considered to be lepton pair from $Z$ boson) with invaraint mass compatible with $Z$ boson ($|m_{\ell\ell}^{Z}-m_{Z}|&lt;10$ GeV).
- Three orthogonal signal regions defined based on the jet and $b$-jet multiplicity.
- At least 5 jets with transverse momentum greater than 25 GeV.
- $b$-jets requirements: at least one $b$-jet tagged with fixed 77% $b$-tagging working point.

The fiducial regions for the trilepton channel are defined as:
- Exactly 3 leptons ($e$ or $\mu$) with transverse momentum greater than 27, 20, 15 GeV for leading, subleading and third lepton, respectively.
- The sum of the three lepton charges is required to be $\pm$1.
- At least one opposite-sign-same-flavour (OSSF) lepton pair (considered to be lepton pair from $Z$ boson) with invaraint mass compatible with $Z$ boson ($|m_{\ell\ell}^{Z}-m_{Z}|&lt;10$ GeV) and $m_{OSSF}&gt;10$ GeV for each OSSF lepton pair.
- Three orthogonal signal regions combined for both inclusive and differential cross section measurements.
- At least 3 jets with transverse momentum greater than 25 GeV.
- $b$-jets requirements: at least one $b$-jet tagged with fixed 85% $b$-tagging working point.
- Signal regions definitions based on the values of the deep neural network discriminants and $b$-jets requirements.

The fiducial regions for the tetralepton channel are defined as:
- Exactly 4 leptons ($e$ or $\mu$) with transverse momentum greater than 27, 7, 7, 7 GeV for leading, subleading, third and fourth lepton, respectively.
- The sum of the four lepton charges is required to be zero.
- At least one opposite-sign-same-flavor (OSSF) lepton pair (considered to be lepton pair from $Z$ boson) with invaraint mass compatible with $Z$ boson ($|m_{\ell\ell}^{Z}-m_{Z}|&lt;20$ GeV) and $m_{OSSF}&gt;10$ GeV for each OSSF lepton pair.
- Four signal regions separated based on based on the flavour composition of the non-$Z$ lepton pair (same flavour, different flavour) and value of the deep neural network discriminant.
- At least 2 jets with transverse momentum greater than 25 GeV.
- At least one $b$-jet tagged with the 85% $b$-tagging working point.
DOI: 10.17182/hepdata.146693.v1/t239
title: "MM, $m^{t\bar{t}}$, parton, SR-4L-SF" of "Inclusive and differential cross-section measurements of $t\bar{t}Z$ production in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector, including EFT and spin-correlation interpretations"

description: Migration matrix for $m^{t\bar{t}}$ variable at parton-level in region SR-4L-SF.
description: Inclusive and differential cross section measurements of $t\bar{t}Z$ production in $pp$ collisions at $\sqrt{s}$=13 TeV with the ATLAS detector, including EFT and spin correlations interpretations

The fiducial regions for the dilepton channel are defined as:
- Exactly 2 leptons ($e$ or $\mu$) with transverse momentum greater than 30, 15 GeV for leading and subleading lepton, respectively.
- The sum of the two lepton charges is required to be zero.
- Exactly one opposite-sign-same-flavour (OSSF) lepton pair (considered to be lepton pair from $Z$ boson) with invaraint mass compatible with $Z$ boson ($|m_{\ell\ell}^{Z}-m_{Z}|&lt;10$ GeV).
- Three orthogonal signal regions defined based on the jet and $b$-jet multiplicity.
- At least 5 jets with transverse momentum greater than 25 GeV.
- $b$-jets requirements: at least one $b$-jet tagged with fixed 77% $b$-tagging working point.

The fiducial regions for the trilepton channel are defined as:
- Exactly 3 leptons ($e$ or $\mu$) with transverse momentum greater than 27, 20, 15 GeV for leading, subleading and third lepton, respectively.
- The sum of the three lepton charges is required to be $\pm$1.
- At least one opposite-sign-same-flavour (OSSF) lepton pair (considered to be lepton pair from $Z$ boson) with invaraint mass compatible with $Z$ boson ($|m_{\ell\ell}^{Z}-m_{Z}|&lt;10$ GeV) and $m_{OSSF}&gt;10$ GeV for each OSSF lepton pair.
- Three orthogonal signal regions combined for both inclusive and differential cross section measurements.
- At least 3 jets with transverse momentum greater than 25 GeV.
- $b$-jets requirements: at least one $b$-jet tagged with fixed 85% $b$-tagging working point.
- Signal regions definitions based on the values of the deep neural network discriminants and $b$-jets requirements.

The fiducial regions for the tetralepton channel are defined as:
- Exactly 4 leptons ($e$ or $\mu$) with transverse momentum greater than 27, 7, 7, 7 GeV for leading, subleading, third and fourth lepton, respectively.
- The sum of the four lepton charges is required to be zero.
- At least one opposite-sign-same-flavor (OSSF) lepton pair (considered to be lepton pair from $Z$ boson) with invaraint mass compatible with $Z$ boson ($|m_{\ell\ell}^{Z}-m_{Z}|&lt;20$ GeV) and $m_{OSSF}&gt;10$ GeV for each OSSF lepton pair.
- Four signal regions separated based on based on the flavour composition of the non-$Z$ lepton pair (same flavour, different flavour) and value of the deep neural network discriminant.
- At least 2 jets with transverse momentum greater than 25 GeV.
- At least one $b$-jet tagged with the 85% $b$-tagging working point.
DOI: 10.17182/hepdata.146693.v1/t240
title: "MM, $m^{t\bar{t}}$, parton, CR-4L-ZZ" of "Inclusive and differential cross-section measurements of $t\bar{t}Z$ production in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector, including EFT and spin-correlation interpretations"

description: Migration matrix for $m^{t\bar{t}}$ variable at parton-level in region CR-4L-ZZ.
description: Inclusive and differential cross section measurements of $t\bar{t}Z$ production in $pp$ collisions at $\sqrt{s}$=13 TeV with the ATLAS detector, including EFT and spin correlations interpretations

The fiducial regions for the dilepton channel are defined as:
- Exactly 2 leptons ($e$ or $\mu$) with transverse momentum greater than 30, 15 GeV for leading and subleading lepton, respectively.
- The sum of the two lepton charges is required to be zero.
- Exactly one opposite-sign-same-flavour (OSSF) lepton pair (considered to be lepton pair from $Z$ boson) with invaraint mass compatible with $Z$ boson ($|m_{\ell\ell}^{Z}-m_{Z}|&lt;10$ GeV).
- Three orthogonal signal regions defined based on the jet and $b$-jet multiplicity.
- At least 5 jets with transverse momentum greater than 25 GeV.
- $b$-jets requirements: at least one $b$-jet tagged with fixed 77% $b$-tagging working point.

The fiducial regions for the trilepton channel are defined as:
- Exactly 3 leptons ($e$ or $\mu$) with transverse momentum greater than 27, 20, 15 GeV for leading, subleading and third lepton, respectively.
- The sum of the three lepton charges is required to be $\pm$1.
- At least one opposite-sign-same-flavour (OSSF) lepton pair (considered to be lepton pair from $Z$ boson) with invaraint mass compatible with $Z$ boson ($|m_{\ell\ell}^{Z}-m_{Z}|&lt;10$ GeV) and $m_{OSSF}&gt;10$ GeV for each OSSF lepton pair.
- Three orthogonal signal regions combined for both inclusive and differential cross section measurements.
- At least 3 jets with transverse momentum greater than 25 GeV.
- $b$-jets requirements: at least one $b$-jet tagged with fixed 85% $b$-tagging working point.
- Signal regions definitions based on the values of the deep neural network discriminants and $b$-jets requirements.

The fiducial regions for the tetralepton channel are defined as:
- Exactly 4 leptons ($e$ or $\mu$) with transverse momentum greater than 27, 7, 7, 7 GeV for leading, subleading, third and fourth lepton, respectively.
- The sum of the four lepton charges is required to be zero.
- At least one opposite-sign-same-flavor (OSSF) lepton pair (considered to be lepton pair from $Z$ boson) with invaraint mass compatible with $Z$ boson ($|m_{\ell\ell}^{Z}-m_{Z}|&lt;20$ GeV) and $m_{OSSF}&gt;10$ GeV for each OSSF lepton pair.
- Four signal regions separated based on based on the flavour composition of the non-$Z$ lepton pair (same flavour, different flavour) and value of the deep neural network discriminant.
- At least 2 jets with transverse momentum greater than 25 GeV.
- At least one $b$-jet tagged with the 85% $b$-tagging working point.
DOI: 10.17182/hepdata.146693.v1/t241
title: "MM, $N_{\text{jets}}$, particle, SR-4L-DF" of "Inclusive and differential cross-section measurements of $t\bar{t}Z$ production in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector, including EFT and spin-correlation interpretations"

description: Migration matrix for $N_{\text{jets}}$ variable at particle-level in region SR-4L-DF.
description: Inclusive and differential cross section measurements of $t\bar{t}Z$ production in $pp$ collisions at $\sqrt{s}$=13 TeV with the ATLAS detector, including EFT and spin correlations interpretations

The fiducial regions for the dilepton channel are defined as:
- Exactly 2 leptons ($e$ or $\mu$) with transverse momentum greater than 30, 15 GeV for leading and subleading lepton, respectively.
- The sum of the two lepton charges is required to be zero.
- Exactly one opposite-sign-same-flavour (OSSF) lepton pair (considered to be lepton pair from $Z$ boson) with invaraint mass compatible with $Z$ boson ($|m_{\ell\ell}^{Z}-m_{Z}|&lt;10$ GeV).
- Three orthogonal signal regions defined based on the jet and $b$-jet multiplicity.
- At least 5 jets with transverse momentum greater than 25 GeV.
- $b$-jets requirements: at least one $b$-jet tagged with fixed 77% $b$-tagging working point.

The fiducial regions for the trilepton channel are defined as:
- Exactly 3 leptons ($e$ or $\mu$) with transverse momentum greater than 27, 20, 15 GeV for leading, subleading and third lepton, respectively.
- The sum of the three lepton charges is required to be $\pm$1.
- At least one opposite-sign-same-flavour (OSSF) lepton pair (considered to be lepton pair from $Z$ boson) with invaraint mass compatible with $Z$ boson ($|m_{\ell\ell}^{Z}-m_{Z}|&lt;10$ GeV) and $m_{OSSF}&gt;10$ GeV for each OSSF lepton pair.
- Three orthogonal signal regions combined for both inclusive and differential cross section measurements.
- At least 3 jets with transverse momentum greater than 25 GeV.
- $b$-jets requirements: at least one $b$-jet tagged with fixed 85% $b$-tagging working point.
- Signal regions definitions based on the values of the deep neural network discriminants and $b$-jets requirements.

The fiducial regions for the tetralepton channel are defined as:
- Exactly 4 leptons ($e$ or $\mu$) with transverse momentum greater than 27, 7, 7, 7 GeV for leading, subleading, third and fourth lepton, respectively.
- The sum of the four lepton charges is required to be zero.
- At least one opposite-sign-same-flavor (OSSF) lepton pair (considered to be lepton pair from $Z$ boson) with invaraint mass compatible with $Z$ boson ($|m_{\ell\ell}^{Z}-m_{Z}|&lt;20$ GeV) and $m_{OSSF}&gt;10$ GeV for each OSSF lepton pair.
- Four signal regions separated based on based on the flavour composition of the non-$Z$ lepton pair (same flavour, different flavour) and value of the deep neural network discriminant.
- At least 2 jets with transverse momentum greater than 25 GeV.
- At least one $b$-jet tagged with the 85% $b$-tagging working point.
DOI: 10.17182/hepdata.146693.v1/t232
title: "MM, $m^{t\bar{t}}$, particle, SR-4L-DF" of "Inclusive and differential cross-section measurements of $t\bar{t}Z$ production in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector, including EFT and spin-correlation interpretations"

description: Migration matrix for $m^{t\bar{t}}$ variable at particle-level in region SR-4L-DF.
description: Inclusive and differential cross section measurements of $t\bar{t}Z$ production in $pp$ collisions at $\sqrt{s}$=13 TeV with the ATLAS detector, including EFT and spin correlations interpretations

The fiducial regions for the dilepton channel are defined as:
- Exactly 2 leptons ($e$ or $\mu$) with transverse momentum greater than 30, 15 GeV for leading and subleading lepton, respectively.
- The sum of the two lepton charges is required to be zero.
- Exactly one opposite-sign-same-flavour (OSSF) lepton pair (considered to be lepton pair from $Z$ boson) with invaraint mass compatible with $Z$ boson ($|m_{\ell\ell}^{Z}-m_{Z}|&lt;10$ GeV).
- Three orthogonal signal regions defined based on the jet and $b$-jet multiplicity.
- At least 5 jets with transverse momentum greater than 25 GeV.
- $b$-jets requirements: at least one $b$-jet tagged with fixed 77% $b$-tagging working point.

The fiducial regions for the trilepton channel are defined as:
- Exactly 3 leptons ($e$ or $\mu$) with transverse momentum greater than 27, 20, 15 GeV for leading, subleading and third lepton, respectively.
- The sum of the three lepton charges is required to be $\pm$1.
- At least one opposite-sign-same-flavour (OSSF) lepton pair (considered to be lepton pair from $Z$ boson) with invaraint mass compatible with $Z$ boson ($|m_{\ell\ell}^{Z}-m_{Z}|&lt;10$ GeV) and $m_{OSSF}&gt;10$ GeV for each OSSF lepton pair.
- Three orthogonal signal regions combined for both inclusive and differential cross section measurements.
- At least 3 jets with transverse momentum greater than 25 GeV.
- $b$-jets requirements: at least one $b$-jet tagged with fixed 85% $b$-tagging working point.
- Signal regions definitions based on the values of the deep neural network discriminants and $b$-jets requirements.

The fiducial regions for the tetralepton channel are defined as:
- Exactly 4 leptons ($e$ or $\mu$) with transverse momentum greater than 27, 7, 7, 7 GeV for leading, subleading, third and fourth lepton, respectively.
- The sum of the four lepton charges is required to be zero.
- At least one opposite-sign-same-flavor (OSSF) lepton pair (considered to be lepton pair from $Z$ boson) with invaraint mass compatible with $Z$ boson ($|m_{\ell\ell}^{Z}-m_{Z}|&lt;20$ GeV) and $m_{OSSF}&gt;10$ GeV for each OSSF lepton pair.
- Four signal regions separated based on based on the flavour composition of the non-$Z$ lepton pair (same flavour, different flavour) and value of the deep neural network discriminant.
- At least 2 jets with transverse momentum greater than 25 GeV.
- At least one $b$-jet tagged with the 85% $b$-tagging working point.