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Search for long-lived neutral particles decaying into lepton jets in proton-proton collisions at $ \sqrt{s}=8 $ TeV with the ATLAS detector

The ATLAS collaboration
JHEP 1411 (2014) 088, 2014

Abstract (data abstract)
CERN-LHC. Several models of physics beyond the Standard Model predict neutral particles that decay into final states consisting of collimated jets of light leptons and hadrons (so-called "lepton jets"). These particles can also be long-lived with decay length comparable to, or even larger than, the LHC detectors' linear dimensions. This paper presents the results of a search for lepton jets in proton--proton collisions at the centre-of-mass energy of $\sqrt{s}$ = 8 TeV in a sample of 20.3 fb$^{-1}$ collected during 2012 with the ATLAS detector at the LHC. Limits on models predicting Higgs boson decays to neutral long-lived lepton jets are derived as a function of the particle's proper decay length.

  • Table 1

    Data from Figure 6

    10.17182/hepdata.65665.v1/t1

    Reconstruction efficiency of TYPE0 LJs as a function of $p_{\mathrm{T}}$ of the $\gamma_{d}$ for $\gamma_{d} \to \mu\mu$ obtained from the...

  • Table 2

    Data from Figure 6

    10.17182/hepdata.65665.v1/t2

    Reconstruction efficiency of TYPE0 LJs as a function of $p_{\mathrm{T}}$ of the $\gamma_{d}$ for $\gamma_{d} \to \mu\mu$ obtained from the...

  • Table 3

    Data from Figure 6

    10.17182/hepdata.65665.v1/t3

    Reconstruction efficiency of TYPE0 LJs as a function of $p_{\mathrm{T}}$ of the $\gamma_{d}$ for $\gamma_{d} \to \mu\mu$ obtained from the...

  • Table 4

    Data from Figure 6

    10.17182/hepdata.65665.v1/t4

    Reconstruction efficiency of TYPE0 LJs as a function of $L_{\mathrm{xy}}$ of the $\gamma_{d}$ for $\gamma_{d} \to \mu\mu$ obtained from the...

  • Table 5

    Data from Figure 6

    10.17182/hepdata.65665.v1/t5

    Reconstruction efficiency of TYPE0 LJs as a function of $L_{\mathrm{xy}}$ of the $\gamma_{d}$ for $\gamma_{d} \to \mu\mu$ obtained from the...

  • Table 6

    Data from Figure 6

    10.17182/hepdata.65665.v1/t6

    Reconstruction efficiency of TYPE0 LJs as a function of $L_{\mathrm{xy}}$ of the $\gamma_{d}$ for $\gamma_{d} \to \mu\mu$ obtained from the...

  • Table 7

    Data from Figure 7

    10.17182/hepdata.65665.v1/t7

    Reconstruction efficiency of TYPE2 LJs as a function of $p_{\mathrm{T}}$ of the $\gamma_{d}$ for $\gamma_{d} \to ee,\pi\pi$ obtained from the...

  • Table 8

    Data from Figure 7

    10.17182/hepdata.65665.v1/t8

    Reconstruction efficiency of TYPE2 LJs as a function of $p_{\mathrm{T}}$ of the $\gamma_{d}$ for $\gamma_{d} \to ee,\pi\pi$ obtained from the...

  • Table 9

    Data from Figure 7

    10.17182/hepdata.65665.v1/t9

    Reconstruction efficiency of TYPE2 LJs as a function of $p_{\mathrm{T}}$ of the $\gamma_{d}$ for $\gamma_{d} \to ee,\pi\pi$ obtained from the...

  • Table 10

    Data from Figure 7

    10.17182/hepdata.65665.v1/t10

    Reconstruction efficiency of TYPE2 LJs as a function of $p_{\mathrm{T}}$ of the $\gamma_{d}$ for $\gamma_{d} \to ee,\pi\pi$ obtained from the...

  • Table 11

    Data from Figure 7

    10.17182/hepdata.65665.v1/t11

    Reconstruction efficiency of TYPE2 LJs as a function of $p_{\mathrm{T}}$ of the $\gamma_{d}$ for $\gamma_{d} \to ee,\pi\pi$ obtained from the...

  • Table 12

    Data from Figure 7

    10.17182/hepdata.65665.v1/t12

    Reconstruction efficiency of TYPE2 LJs as a function of $L_{\mathrm{xy}}$ of the $\gamma_{d}$ for $\gamma_{d} \to ee,\pi\pi$ obtained from the...

  • Table 13

    Data from Figure 7

    10.17182/hepdata.65665.v1/t13

    Reconstruction efficiency of TYPE2 LJs as a function of $L_{\mathrm{xy}}$ of the $\gamma_{d}$ for $\gamma_{d} \to ee,\pi\pi$ obtained from the...

  • Table 14

    Data from Figure 7

    10.17182/hepdata.65665.v1/t14

    Reconstruction efficiency of TYPE2 LJs as a function of $L_{\mathrm{xy}}$ of the $\gamma_{d}$ for $\gamma_{d} \to ee,\pi\pi$ obtained from the...

  • Table 15

    Data from Figure 7

    10.17182/hepdata.65665.v1/t15

    Reconstruction efficiency of TYPE2 LJs as a function of $L_{\mathrm{xy}}$ of the $\gamma_{d}$ for $\gamma_{d} \to ee,\pi\pi$ obtained from the...

  • Table 16

    Data from Figure 7

    10.17182/hepdata.65665.v1/t16

    Reconstruction efficiency of TYPE2 LJs as a function of $L_{\mathrm{xy}}$ of the $\gamma_{d}$ for $\gamma_{d} \to ee,\pi\pi$ obtained from the...

  • Table 17

    Data from Figure 8

    10.17182/hepdata.65665.v1/t17

    Reconstruction efficiency of TYPE0 LJs as a function of the $p_{\mathrm{T}}$ of the $s_{d_{1}}$ for LJs with two $\gamma_{d}$'s for...

  • Table 18

    Data from Figure 8

    10.17182/hepdata.65665.v1/t18

    Reconstruction efficiency of TYPE0 LJs as a function of the $p_{\mathrm{T}}$ of the $s_{d_{1}}$ for LJs with two $\gamma_{d}$'s for...

  • Table 19

    Data from Figure 8

    10.17182/hepdata.65665.v1/t19

    Reconstruction efficiency of TYPE1 LJs as a function of the $p_{\mathrm{T}}$ of the $s_{d_{1}}$ for LJs with two $\gamma_{d}$'s for...

  • Table 20

    Data from Figure 8

    10.17182/hepdata.65665.v1/t20

    Reconstruction efficiency of TYPE1 LJs as a function of the $p_{\mathrm{T}}$ of the $s_{d_{1}}$ for LJs with two $\gamma_{d}$'s for...

  • Table 21

    Data from Figure 8

    10.17182/hepdata.65665.v1/t21

    Reconstruction efficiency of TYPE2 LJs as a function of the $p_{\mathrm{T}}$ of the $s_{d_{1}}$ for LJs with two $\gamma_{d}$'s for...

  • Table 22

    Data from Figure 8

    10.17182/hepdata.65665.v1/t22

    Reconstruction efficiency of TYPE2 LJs as a function of the $p_{\mathrm{T}}$ of the $s_{d_{1}}$ for LJs with two $\gamma_{d}$'s for...

  • Table 23

    Data from Figure 8

    10.17182/hepdata.65665.v1/t23

    Reconstruction efficiency of TYPE2 LJs as a function of the $p_{\mathrm{T}}$ of the $s_{d_{1}}$ for LJs with two $\gamma_{d}$'s for...

  • Table 24

    Data from Figure 8

    10.17182/hepdata.65665.v1/t24

    Reconstruction efficiency of TYPE2 LJs as a function of the $p_{\mathrm{T}}$ of the $s_{d_{1}}$ for LJs with two $\gamma_{d}$'s for...

  • Table 25

    Data from Figure 9

    10.17182/hepdata.65665.v1/t25

    Muon trigger efficiency, $\rm \varepsilon$(2mu6), as a function of $p_{T}$ of the $\gamma_{d}$ for $\gamma_{d} \to \mu\mu$ obtained from the...

  • Table 26

    Data from Figure 9

    10.17182/hepdata.65665.v1/t26

    Muon trigger efficiency, $\rm \varepsilon$(2mu6), as a function of $p_{T}$ of the $\gamma_{d}$ for $\gamma_{d} \to \mu\mu$ obtained from the...

  • Table 27

    Data from Figure 9

    10.17182/hepdata.65665.v1/t27

    Muon trigger efficiency, $\rm \varepsilon$(2mu6), as a function of $p_{T}$ of the $\gamma_{d}$ for $\gamma_{d} \to \mu\mu$ obtained from the...

  • Table 28

    Data from Figure 9

    10.17182/hepdata.65665.v1/t28

    Muon trigger efficiency, $\rm \varepsilon$(2mu6), as a function of $\eta$ of the $\gamma_{d}$ for $\gamma_{d} \to \mu\mu$ obtained from the...

  • Table 29

    Data from Figure 9

    10.17182/hepdata.65665.v1/t29

    Muon trigger efficiency, $\rm \varepsilon$(2mu6), as a function of $\eta$ of the $\gamma_{d}$ for $\gamma_{d} \to \mu\mu$ obtained from the...

  • Table 30

    Data from Figure 9

    10.17182/hepdata.65665.v1/t30

    Muon trigger efficiency, $\rm \varepsilon$(2mu6), as a function of $\eta$ of the $\gamma_{d}$ for $\gamma_{d} \to \mu\mu$ obtained from the...

  • Table 31

    Data from Figure 10

    10.17182/hepdata.65665.v1/t31

    Calorimetric trigger efficiency as a function of $p_{T}$ of the $\gamma_{d}$ for $\gamma_{d} \to ee,\pi\pi$ obtained from the LJ gun...

  • Table 32

    Data from Figure 10

    10.17182/hepdata.65665.v1/t32

    Calorimetric trigger efficiency as a function of $p_{T}$ of the $\gamma_{d}$ for $\gamma_{d} \to ee,\pi\pi$ obtained from the LJ gun...

  • Table 33

    Data from Figure 10

    10.17182/hepdata.65665.v1/t33

    Calorimetric trigger efficiency as a function of $p_{T}$ of the $\gamma_{d}$ for $\gamma_{d} \to ee,\pi\pi$ obtained from the LJ gun...

  • Table 34

    Data from Figure 10

    10.17182/hepdata.65665.v1/t34

    Calorimetric trigger efficiency as a function of $p_{T}$ of the $\gamma_{d}$ for $\gamma_{d} \to ee,\pi\pi$ obtained from the LJ gun...

  • Table 35

    Data from Figure 10

    10.17182/hepdata.65665.v1/t35

    Calorimetric trigger efficiency as a function of $p_{T}$ of the $\gamma_{d}$ for $\gamma_{d} \to ee,\pi\pi$ obtained from the LJ gun...

  • Table 36

    Data from Figure 10

    10.17182/hepdata.65665.v1/t36

    Calorimetric trigger efficiency as a function of $\eta$ of the $\gamma_{d}$ for $\gamma_{d} \to ee,\pi\pi$ obtained from the LJ gun...

  • Table 37

    Data from Figure 10

    10.17182/hepdata.65665.v1/t37

    Calorimetric trigger efficiency as a function of $\eta$ of the $\gamma_{d}$ for $\gamma_{d} \to ee,\pi\pi$ obtained from the LJ gun...

  • Table 38

    Data from Figure 10

    10.17182/hepdata.65665.v1/t38

    Calorimetric trigger efficiency as a function of $\eta$ of the $\gamma_{d}$ for $\gamma_{d} \to ee,\pi\pi$ obtained from the LJ gun...

  • Table 39

    Data from Figure 10

    10.17182/hepdata.65665.v1/t39

    Calorimetric trigger efficiency as a function of $\eta$ of the $\gamma_{d}$ for $\gamma_{d} \to ee,\pi\pi$ obtained from the LJ gun...

  • Table 40

    Data from Figure 10

    10.17182/hepdata.65665.v1/t40

    Calorimetric trigger efficiency as a function of $\eta$ of the $\gamma_{d}$ for $\gamma_{d} \to ee,\pi\pi$ obtained from the LJ gun...

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