HEPData

Abstract (data abstract)

CERN-LHC. Searches for heavy long-lived charged particles are performed using a data sample of 19.8 fb$^{-1}$ from proton-proton collisions at a centre-of-mass energy of $\sqrt{s}$ = 8 TeV collected by the ATLAS detector at the Large Hadron Collider. No excess is observed above the estimated background and limits are placed on the mass of long-lived particles in various supersymmetric models. Long-lived tau sleptons in models with gauge-mediated symmetry breaking are excluded up to masses between 440 and 385 GeV for $\tan\beta$ between 10 and 50, with a 290 GeV limit in the case where only direct tau slepton production is considered. In the context of simplified LeptoSUSY models, where sleptons are stable and have a mass of 300 GeV, squark and gluino masses are excluded up to a mass of 1500 and 1360 GeV, respectively. Directly produced charginos, in simplified models where they are nearly degenerate to the lightest neutralino, are excluded up to a mass of 620 GeV. $R$-hadrons, composites containing a gluino, bottom squark or top squark, are excluded up to a mass of 1270, 845 and 900 GeV, respectively, using the full detector; and up to a mass of 1260, 835 and 870 GeV using an approach disregarding information from the muon spectrometer.

Table 1

Data from Figure 2a

10.17182/hepdata.66462.v1/t1

Observed data, background estimate and expected signal in the slepton search for the lower of the two masses ($m$) in...
https://www.hepdata.net/record/data/58666yaml https://www.hepdata.net/record/data/58666/csvcsv
Table 2

Data from Figure 2b

10.17182/hepdata.66462.v1/t2

Observed data, background estimate and expected signal in the slepton search for the lower of the two masses ($m$) in...
https://www.hepdata.net/record/data/58667yaml https://www.hepdata.net/record/data/58667/csvcsv
Table 3

Data from Figure 2c

10.17182/hepdata.66462.v1/t3

Observed data, background estimate and expected signal in the slepton search for the one-candidate signal region (LeptoSUSY: $m_{\tilde q}$ =...
https://www.hepdata.net/record/data/58668yaml https://www.hepdata.net/record/data/58668/csvcsv
Table 4

Data from Figure 3a

10.17182/hepdata.66462.v1/t4

Reconstructed mass $m_\beta$ in observed data, background estimate and expected signal ($\tilde{\chi}^{\pm}_1$ masses of 400 and 600 GeV) in the...
https://www.hepdata.net/record/data/58669yaml https://www.hepdata.net/record/data/58669/csvcsv
Table 5

Data from Figure 3b

10.17182/hepdata.66462.v1/t5

Reconstructed mass $m_\beta$ in observed data, background estimate and expected signal ($\tilde{\chi}^{\pm}_1$ masses of 400 and 600 GeV) in the...
https://www.hepdata.net/record/data/58670yaml https://www.hepdata.net/record/data/58670/csvcsv
Table 6

Data from Figure 3c

10.17182/hepdata.66462.v1/t6

Reconstructed mass $m_\beta$ in observed data, background estimate and expected signal ($\tilde{\chi}^{\pm}_1$ masses of 400 and 600 GeV) in the...
https://www.hepdata.net/record/data/58671yaml https://www.hepdata.net/record/data/58671/csvcsv
Table 7

Data from Figure 4a

10.17182/hepdata.66462.v1/t7

Data and background estimates for the reconstructed mass based on time-of-flight, $m_{\beta}$, for combined candidates in the full-detector 500 GeV...
https://www.hepdata.net/record/data/58672yaml https://www.hepdata.net/record/data/58672/csvcsv
Table 8

Data from Figure 4b

10.17182/hepdata.66462.v1/t8

Data and background estimates for the reconstructed mass based on specific energy loss, $m_{\beta\gamma}$, for combined candidates in the full-detector...
https://www.hepdata.net/record/data/58673yaml https://www.hepdata.net/record/data/58673/csvcsv
Table 9

Data from Figure 4c

10.17182/hepdata.66462.v1/t9

Data and background estimates for the reconstructed mass based on time-of-flight, $m_{\beta}$, for the MS-agnostic 500 GeV sbottom and $m_{\beta\gamma}$...
https://www.hepdata.net/record/data/58674yaml https://www.hepdata.net/record/data/58674/csvcsv
Table 10

Data from Figure 4d

10.17182/hepdata.66462.v1/t10

Data and background estimates for the reconstructed mass based on specific energy loss, $m_{\beta\gamma}$, for the MS-agnostic 500 GeV stop...
https://www.hepdata.net/record/data/58675yaml https://www.hepdata.net/record/data/58675/csvcsv
Table 11

Data from Figure 5a

10.17182/hepdata.66462.v1/t11

Cross-section upper limits as a function of the mass of the lightest stau for the GMSB models with $\tan\beta =...
https://www.hepdata.net/record/data/58676yaml https://www.hepdata.net/record/data/58676/csvcsv
Table 12

Data from Figure 5b

10.17182/hepdata.66462.v1/t12

Cross-section upper limits as a function of the mass of the lightest stau for the GMSB models with $\tan\beta =...
https://www.hepdata.net/record/data/58677yaml https://www.hepdata.net/record/data/58677/csvcsv
Table 13

Data from Figure 5c

10.17182/hepdata.66462.v1/t13

Cross-section upper limits as a function of the mass of the lightest stau for the GMSB models with $\tan\beta =...
https://www.hepdata.net/record/data/58678yaml https://www.hepdata.net/record/data/58678/csvcsv
Table 14

Data from Figure 5d

10.17182/hepdata.66462.v1/t14

Cross-section upper limits as a function of the mass of the lightest stau for the GMSB models with $\tan\beta =...
https://www.hepdata.net/record/data/58679yaml https://www.hepdata.net/record/data/58679/csvcsv
Table 15

Data from Figure 5e

10.17182/hepdata.66462.v1/t15

Cross-section upper limits as a function of the mass of the lightest stau for the GMSB models with $\tan\beta =...
https://www.hepdata.net/record/data/58680yaml https://www.hepdata.net/record/data/58680/csvcsv
Table 16

Data from Figure 6a

10.17182/hepdata.66462.v1/t16

Observed 95% CL exclusion contour for directly produced sleptons in the plane $\Delta=m(\tilde{\ell})-m(\tilde{\tau}_1)$ vs. $m(\tilde{\tau}_1)$.
https://www.hepdata.net/record/data/58681yaml https://www.hepdata.net/record/data/58681/csvcsv
Table 17

Data from Figure 6a

10.17182/hepdata.66462.v1/t17

Expected 95% CL exclusion contour for directly produced sleptons in the plane $\Delta=m(\tilde{\ell})-m(\tilde{\tau}_1)$ vs. $m(\tilde{\tau}_1)$.
https://www.hepdata.net/record/data/58682yaml https://www.hepdata.net/record/data/58682/csvcsv
Table 18

Data from Figure 7a

10.17182/hepdata.66462.v1/t18

Cross-section upper limits as a function of the $\tilde{\tau}_1$ mass for direct $\tilde{\tau}_1$ production and three values of $\tan\beta$. Expected...
https://www.hepdata.net/record/data/58683yaml https://www.hepdata.net/record/data/58683/csvcsv
Table 19

Data from Figure 8a

10.17182/hepdata.66462.v1/t19

Cross-section upper limits as a function of the $\tilde{\chi}_1$ mass for $\tilde{\tau}_1$ sleptons resulting from the decay of directly produced...
https://www.hepdata.net/record/data/58684yaml https://www.hepdata.net/record/data/58684/csvcsv
Table 20

Data from Figure 9a

10.17182/hepdata.66462.v1/t20

Observed 95% CL exclusion contour for the LeptoSUSY model.
https://www.hepdata.net/record/data/58685yaml https://www.hepdata.net/record/data/58685/csvcsv
Table 21

Data from Figure 9a

10.17182/hepdata.66462.v1/t21

Expected 95% CL exclusion contour for the LeptoSUSY model.
https://www.hepdata.net/record/data/58686yaml https://www.hepdata.net/record/data/58686/csvcsv
Table 22

Data from Figure 10a

10.17182/hepdata.66462.v1/t22

Cross-section upper limits for various chargino masses in stable-chargino models. Expected limit with $\pm 1\sigma$ and $\pm 2\sigma$ uncertainties, observed...
https://www.hepdata.net/record/data/58687yaml https://www.hepdata.net/record/data/58687/csvcsv
Table 23

Data from Figure 11a

10.17182/hepdata.66462.v1/t23

Cross-section upper limits as a function of the LLP mass for the gluino R-Hadron models for the MS-agnostic search. Expected...
https://www.hepdata.net/record/data/58688yaml https://www.hepdata.net/record/data/58688/csvcsv
Table 24

Data from Figure 11b

10.17182/hepdata.66462.v1/t24

Cross-section upper limits as a function of the LLP mass for the gluino R-Hadron models for the full-detector search. Expected...
https://www.hepdata.net/record/data/58689yaml https://www.hepdata.net/record/data/58689/csvcsv
Table 25

Data from Figure 11c

10.17182/hepdata.66462.v1/t25

Cross-section upper limits as a function of the LLP mass for the sbottom R-Hadron models for the MS-agnostic search. Expected...
https://www.hepdata.net/record/data/58690yaml https://www.hepdata.net/record/data/58690/csvcsv
Table 26

Data from Figure 11d

10.17182/hepdata.66462.v1/t26

Cross-section upper limits as a function of the LLP mass for the sbottom R-Hadron models for the full-detector search. Expected...
https://www.hepdata.net/record/data/58691yaml https://www.hepdata.net/record/data/58691/csvcsv
Table 27

Data from Figure 11e

10.17182/hepdata.66462.v1/t27

Cross-section upper limits as a function of the LLP mass for the stop R-Hadron models for the MS-agnostic search. Expected...
https://www.hepdata.net/record/data/58692yaml https://www.hepdata.net/record/data/58692/csvcsv
Table 28

Data from Figure 11f

10.17182/hepdata.66462.v1/t28

Cross-section upper limits as a function of the LLP mass for the stop R-Hadron models for the full-detector search. Expected...
https://www.hepdata.net/record/data/58693yaml https://www.hepdata.net/record/data/58693/csvcsv
Table 29

Data from Table 2

10.17182/hepdata.66462.v1/t29

Summary of systematic uncertainties for the slepton searches (given in percent). Ranges indicate a mass dependence for the given uncertainty...
https://www.hepdata.net/record/data/58694yaml https://www.hepdata.net/record/data/58694/csvcsv
Table 30

Data from Table 3

10.17182/hepdata.66462.v1/t30

Summary of systematic uncertainties for the chargino and R-Hadron searches (given in percent). Ranges indicate a mass dependence for the...
https://www.hepdata.net/record/data/58695yaml https://www.hepdata.net/record/data/58695/csvcsv
Table 31

Data from Table 4

10.17182/hepdata.66462.v1/t31

Observed and expected event yields, as well as efficiencies and uncertainties for three MC simulation signal samples, in the two...
https://www.hepdata.net/record/data/58696yaml https://www.hepdata.net/record/data/58696/csvcsv
Table 32

Data from Table 5

10.17182/hepdata.66462.v1/t32

Observed and expected event yields, as well as efficiencies and uncertainties for three MC simulation signal samples, in the three...
https://www.hepdata.net/record/data/58697yaml https://www.hepdata.net/record/data/58697/csvcsv
Table 33

Data from Table 6

10.17182/hepdata.66462.v1/t33

Observed and expected event yields, as well as efficiencies and uncertainties for three MC simulation signal samples, in the three...
https://www.hepdata.net/record/data/58698yaml https://www.hepdata.net/record/data/58698/csvcsv
Table 34

Data from Table 7

10.17182/hepdata.66462.v1/t34

Observed and expected event yields, as well as efficiencies and uncertainties for three MC simulation signal samples, in the R-Hadron...
https://www.hepdata.net/record/data/58699yaml https://www.hepdata.net/record/data/58699/csvcsv
Table 35

Data from Aux Table 1

10.17182/hepdata.66462.v1/t35

Mass of the $\tilde{\tau}_1$; cross-section; minimum $p_T$, maximum $\beta$ and minimum $m_{\beta}$ requirements; expected number of signal events (exp.); signal...
https://www.hepdata.net/record/data/58700yaml https://www.hepdata.net/record/data/58700/csvcsv
Table 36

Data from Aux Table 2

10.17182/hepdata.66462.v1/t36

Mass of the $\tilde{\tau}_1$; cross-section; minimum \pt, maximum $\beta$ and minimum $m_{\beta}$ requirements; expected number of signal events (exp.); signal...
https://www.hepdata.net/record/data/58701yaml https://www.hepdata.net/record/data/58701/csvcsv
Table 37

Data from Aux Table 3

10.17182/hepdata.66462.v1/t37

Masses of the $\tilde{g}$ and $\tilde{q}$; cross-section; minimum \pt, maximum $\beta$ and minimum $m_{\beta}$ requirements; expected number of signal events...
https://www.hepdata.net/record/data/58702yaml https://www.hepdata.net/record/data/58702/csvcsv
Table 38

Data from Aux Table 4

10.17182/hepdata.66462.v1/t38

Slepton search candidate requirements and example candidate selection flow for loose and tight selections.
https://www.hepdata.net/record/data/58703yaml https://www.hepdata.net/record/data/58703/csvcsv
Table 39

Data from Aux Table 5

10.17182/hepdata.66462.v1/t39

Mass of the $\tilde{\chi}^{\pm}_{1}$; cross-section; minimum $p_T$, maximum $\beta$ and minimum $m_{\beta}$ requirements; expected number of signal events (exp.); signal...
https://www.hepdata.net/record/data/58704yaml https://www.hepdata.net/record/data/58704/csvcsv
Table 40

Data from Aux Table 6

10.17182/hepdata.66462.v1/t40

Chargino search candidate requirements and example candidate selection flow for the total production as well as chargino-neutralino (CN) and chargino-pair...
https://www.hepdata.net/record/data/58705yaml https://www.hepdata.net/record/data/58705/csvcsv
Table 41

Data from Aux Table 7

10.17182/hepdata.66462.v1/t41

Mass of the LLP; cross-section; minimum $p$, maximum $\beta\gamma$, maximum $\beta$, minimum $m_{\beta\gamma}$ and minimum $m_{\beta}$ requirements; expected signal (exp.);...
https://www.hepdata.net/record/data/58706yaml https://www.hepdata.net/record/data/58706/csvcsv
Table 42

Data from Aux Table 8

10.17182/hepdata.66462.v1/t42

Mass of the LLP; cross-section; minimum $p$, maximum $\beta\gamma$, maximum $\beta$, minimum $m_{\beta\gamma}$ and minimum $m_{\beta}$ requirements; expected signal (exp.);...
https://www.hepdata.net/record/data/58707yaml https://www.hepdata.net/record/data/58707/csvcsv
Table 43

Data from Aux Table 9

10.17182/hepdata.66462.v1/t43

Muon-agnostic search R-Hadron candidate requirements and example candidate selection flow for ID+calorimeter selection.
https://www.hepdata.net/record/data/58708yaml https://www.hepdata.net/record/data/58708/csvcsv
Table 44

Data from Aux Table 10

10.17182/hepdata.66462.v1/t44

Full-detector search R-Hadron candidate requirements and example candidate selection flow for combined selection.
https://www.hepdata.net/record/data/58709yaml https://www.hepdata.net/record/data/58709/csvcsv

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