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Search for magnetic monopoles and stable high-electric-charge objects in 13 TeV proton-proton collisions with the ATLAS detector

The collaboration
No Journal Information, 2019

Abstract (data abstract)
A search for magnetic monopoles and high-electric-charge objects is presented using 34.4 fb$^{-1}$ of 13 TeV $pp$ collision data collected by the ATLAS detector at the LHC during 2015 and 2016. The considered signature is based upon high ionization in the transition radiation tracker of the inner detector associated with a pencil-shape energy deposit in the electromagnetic calorimeter. The data were collected by a dedicated trigger based on the tracker high-threshold hit capability. The results are interpreted in models of Drell-Yan pair production of stable particles with two spin hypotheses (0 and 1/2) and masses ranging from 200 GeV to 4000 GeV. The search improves by approximately a factor of five the constraints on the direct production of magnetic monopoles carrying one or two Dirac magnetic charges and stable objects with electric charge in the range $20\le|z|\le60$ and extends the charge range to $60<|z|\le100$.

• #### Table 1

Figure 2a

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Observed 95% confidence-level upper limits on the cross section for Drell-Yan spin-0 monopole production as a function of mass for...

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Figure 2b

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Observed 95% confidence-level upper limits on the cross section for Drell-Yan spin-0 HECO production as a function of mass for...

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Figure 2c

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Observed 95% confidence-level upper limits on the cross section for Drell-Yan spin-1/2 monopole production as a function of mass for...

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Figure 2d

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Observed 95% confidence-level upper limits on the cross section for Drell-Yan spin-1/2 HECO production as a function of mass for...

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Data from Figure 4a of auxiliary material

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Selection efficiency as a function of transverse kinetic energy $E^\text{kin}_\text{T}=E_\text{kin}\sin\theta$ and pseudorapidity $|\eta|$ for $g=1g_\textrm{D}$ monopoles of mass 200 GeV.

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Data from Figure 4b of auxiliary material

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Selection efficiency as a function of transverse kinetic energy $E^\text{kin}_\text{T}=E_\text{kin}\sin\theta$ and pseudorapidity $|\eta|$ for $g=1g_\textrm{D}$ monopoles of mass 500 GeV.

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Data from Figure 4c of auxiliary material

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Selection efficiency as a function of transverse kinetic energy $E^\text{kin}_\text{T}=E_\text{kin}\sin\theta$ and pseudorapidity $|\eta|$ for $g=1g_\textrm{D}$ monopoles of mass 1000 GeV.

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Data from Figure 4d of auxiliary material

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Selection efficiency as a function of transverse kinetic energy $E^\text{kin}_\text{T}=E_\text{kin}\sin\theta$ and pseudorapidity $|\eta|$ for $g=1g_\textrm{D}$ monopoles of mass 1500 GeV.

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Data from Figure 4e of auxiliary material

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Selection efficiency as a function of transverse kinetic energy $E^\text{kin}_\text{T}=E_\text{kin}\sin\theta$ and pseudorapidity $|\eta|$ for $g=1g_\textrm{D}$ monopoles of mass 2000 GeV.

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Data from Figure 4f of auxiliary material

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Selection efficiency as a function of transverse kinetic energy $E^\text{kin}_\text{T}=E_\text{kin}\sin\theta$ and pseudorapidity $|\eta|$ for $g=1g_\textrm{D}$ monopoles of mass 2500 GeV.

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Data from Figure 4g of auxiliary material

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Selection efficiency as a function of transverse kinetic energy $E^\text{kin}_\text{T}=E_\text{kin}\sin\theta$ and pseudorapidity $|\eta|$ for $g=1g_\textrm{D}$ monopoles of mass 3000 GeV.

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Data from Figure 4h of auxiliary material

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Selection efficiency as a function of transverse kinetic energy $E^\text{kin}_\text{T}=E_\text{kin}\sin\theta$ and pseudorapidity $|\eta|$ for $g=1g_\textrm{D}$ monopoles of mass 4000 GeV.

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Data from Figure 5a of auxiliary material

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Selection efficiency as a function of transverse kinetic energy $E^\text{kin}_\text{T}=E_\text{kin}\sin\theta$ and pseudorapidity $|\eta|$ for $g=2g_\textrm{D}$ monopoles of mass 200 GeV.

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Data from Figure 5b of auxiliary material

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Selection efficiency as a function of transverse kinetic energy $E^\text{kin}_\text{T}=E_\text{kin}\sin\theta$ and pseudorapidity $|\eta|$ for $g=2g_\textrm{D}$ monopoles of mass 500 GeV.

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Data from Figure 5c of auxiliary material

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Selection efficiency as a function of transverse kinetic energy $E^\text{kin}_\text{T}=E_\text{kin}\sin\theta$ and pseudorapidity $|\eta|$ for $g=2g_\textrm{D}$ monopoles of mass 1000 GeV.

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Data from Figure 5d of auxiliary material

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Selection efficiency as a function of transverse kinetic energy $E^\text{kin}_\text{T}=E_\text{kin}\sin\theta$ and pseudorapidity $|\eta|$ for $g=2g_\textrm{D}$ monopoles of mass 1500 GeV.

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Data from Figure 5e of auxiliary material

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Selection efficiency as a function of transverse kinetic energy $E^\text{kin}_\text{T}=E_\text{kin}\sin\theta$ and pseudorapidity $|\eta|$ for $g=2g_\textrm{D}$ monopoles of mass 2000 GeV.

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Data from Figure 5f of auxiliary material

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Selection efficiency as a function of transverse kinetic energy $E^\text{kin}_\text{T}=E_\text{kin}\sin\theta$ and pseudorapidity $|\eta|$ for $g=2g_\textrm{D}$ monopoles of mass 2500 GeV.

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Data from Figure 5g of auxiliary material

10.17182/hepdata.89874.v1/t19

Selection efficiency as a function of transverse kinetic energy $E^\text{kin}_\text{T}=E_\text{kin}\sin\theta$ and pseudorapidity $|\eta|$ for $g=2g_\textrm{D}$ monopoles of mass 3000 GeV.

• #### Table 20

Data from Figure 5h of auxiliary material

10.17182/hepdata.89874.v1/t20

Selection efficiency as a function of transverse kinetic energy $E^\text{kin}_\text{T}=E_\text{kin}\sin\theta$ and pseudorapidity $|\eta|$ for $g=2g_\textrm{D}$ monopoles of mass 4000 GeV.

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Data from Figure 6a of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

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Data from Figure 6b of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

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Data from Figure 6c of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

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Data from Figure 6d of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 25

Data from Figure 6e of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 26

Data from Figure 6f of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 27

Data from Figure 6g of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 28

Data from Figure 6h of auxiliary material

10.17182/hepdata.89874.v1/t28

Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 29

Data from Figure 7a of auxiliary material

10.17182/hepdata.89874.v1/t29

Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 30

Data from Figure 7b of auxiliary material

10.17182/hepdata.89874.v1/t30

Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 31

Data from Figure 7c of auxiliary material

10.17182/hepdata.89874.v1/t31

Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

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Data from Figure 7d of auxiliary material

10.17182/hepdata.89874.v1/t32

Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 33

Data from Figure 7e of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 34

Data from Figure 7f of auxiliary material

10.17182/hepdata.89874.v1/t34

Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 35

Data from Figure 7g of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 36

Data from Figure 7h of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 37

Data from Figure 8a of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 38

Data from Figure 8b of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 39

Data from Figure 8c of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 40

Data from Figure 8d of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

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Data from Figure 8e of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 42

Data from Figure 8f of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 43

Data from Figure 8g of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 44

Data from Figure 8h of auxiliary material

10.17182/hepdata.89874.v1/t44

Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 45

Data from Figure 9a of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 46

Data from Figure 9b of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 47

Data from Figure 9c of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 48

Data from Figure 9d of auxiliary material

10.17182/hepdata.89874.v1/t48

Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 49

Data from Figure 9e of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 50

Data from Figure 9f of auxiliary material

10.17182/hepdata.89874.v1/t50

Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 51

Data from Figure 9g of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 52

Data from Figure 9h of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 53

Data from Figure 10a of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 54

Data from Figure 10b of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 55

Data from Figure 10c of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 56

Data from Figure 10d of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 57

Data from Figure 10e of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 58

Data from Figure 10f of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 59

Data from Figure 10g of auxiliary material

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Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...

• #### Table 60

Data from Figure 10h of auxiliary material

10.17182/hepdata.89874.v1/t60

Total selection efficiency (i.e., the fraction of MC HECOs surviving the trigger and offline selection criteria) as a function of...