Table 2 Summary of the signal region event selection in the 0-, 1- and 2-lepton channels. Jet1 and jet2 refer to the two signal jets and H refers to the jet1–jet2 system

Central jets

\(\ge \) 2

Signal jet \(p_{\text {T}}\)

\(\ge 1\) signal jet with

c-jets

One or two c-tagged signal jets

b-jets

No b-tagged non-signal jets

Jets

2, 3 (0- and 1-lepton); \(2,~\ge 3\) (2-lepton)

\(p_{\text {T}} ^V\) regions

75– (2-lepton)

\(\Delta R({\textbf {jet1}},~{\textbf {jet2}})\)

: \(\Delta R \le 2.3\)

: \(\Delta R \le 1.6\)

: \(\Delta R \le 1.2\)

0-lepton channel

Trigger

\(E_{\text {T}}^{\text {miss}} \)

Leptons

No loose leptons

\(E_{\text {T}}^{\text {miss}} \)

\(p_{\mathrm {T}}^{\mathrm {miss}}\)

\(H_{\mathrm {T}}\)

(2 jets) (3 jets)

\(\min |\Delta \phi (\mathbf{E^{{miss}}_{{T}}}, {\textbf {jet}})|\)

\(> 20^\circ \) (2 jets)\(,~> 30^\circ \) (3 jets)

\(|\Delta \phi (\mathbf{E^{{\textbf {miss}}}_{{T}}}, \mathbf{H})|\)

\(> 120^\circ \)

\(|\Delta \phi ({\textbf {jet1, jet2}})|\)

\(< 140^\circ \)

\(|\Delta \phi (\mathbf{E^{{miss}}_{{T}}},\mathbf{p_{{T}}^{{miss}}})|\)

\(< 90^\circ \)

1-lepton channel

Trigger

e sub-channel: single electron

\(\mu \) sub-channel: \(E_{\text {T}}^{\text {miss}}\)

Leptons

One tight lepton and no additional loose leptons

\(E_{\text {T}}^{\text {miss}} \)

(e sub-channel)

\(m_\mathrm {T}^W\)

2-lepton channel

Trigger

Single lepton

Leptons

Exactly two loose leptons

Same flavour, opposite charge for \(\mu \mu \)

\(m_{\ell \ell }\)