Abstract (data abstract)

CERN-LHC. We search for evidence of physics beyond the Standard Model in the production of final states with multiple high transverse momentum jets, using 20.3 fb$^{-1}$ of proton-proton collision data recorded by the ATLAS detector at $\sqrt{s} = 8$ TeV. No excess of events beyond Standard Model expectations is observed, and upper limits on the visible cross-section for non-Standard Model production of multi-jet final states are set. Using a wide variety of models for black hole and string ball production and decay, the limit on the cross-section times acceptance is as low as 0.16 fb at the 95% CL for a minimum scalar sum of jet transverse momentum in the event of about 4.3 TeV. Using models for black hole and string ball production and decay, exclusion contours are determined as a function of the production mass threshold and the gravity scale. These limits can be interpreted in terms of lower-mass limits on black hole and string ball production that range from 4.6 to 6.2 TeV.

Table 1

Data from htmin_data_n3

10.17182/hepdata.67127.v1/t1

Number of data events (20.3 fb$^{-1}$), number of predicted events from the fit, statistical uncertainty on the fit, systematic uncertainty...
Table 2

Data from htmin_data_n4

10.17182/hepdata.67127.v1/t2

Number of data events (20.3 fb$^{-1}$), number of predicted events from the fit, statistical uncertainty on the fit, systematic uncertainty...
Table 3

Data from htmin_data_n5

10.17182/hepdata.67127.v1/t3

Number of data events (20.3 fb$^{-1}$), number of predicted events from the fit, statistical uncertainty on the fit, systematic uncertainty...
Table 4

Data from htmin_data_n6

10.17182/hepdata.67127.v1/t4

Number of data events (20.3 fb$^{-1}$), number of predicted events from the fit, statistical uncertainty on the fit, systematic uncertainty...
Table 5

Data from htmin_data_n7

10.17182/hepdata.67127.v1/t5

Number of data events (20.3 fb$^{-1}$), number of predicted events from the fit, statistical uncertainty on the fit, systematic uncertainty...
Table 6

Data from htmin_data_n8

10.17182/hepdata.67127.v1/t6

Number of data events (20.3 fb$^{-1}$), number of predicted events from the fit, statistical uncertainty on the fit, systematic uncertainty...
Table 7

Data from n3_model_independent

10.17182/hepdata.67127.v1/t7

Upper limits on the visible cross section (cross section ($\sigma$) times acceptance ($A$) times efficiency ($\epsilon$)) at the 95% CL...
Table 8

Data from n4_model_independent

10.17182/hepdata.67127.v1/t8

Upper limits on the visible cross section (cross section ($\sigma$) times acceptance ($A$) times efficiency ($\epsilon$)) at the 95% CL...
Table 9

Data from n5_model_independent

10.17182/hepdata.67127.v1/t9

Upper limits on the visible cross section (cross section ($\sigma$) times acceptance ($A$) times efficiency ($\epsilon$)) at the 95% CL...
Table 10

Data from n6_model_independent

10.17182/hepdata.67127.v1/t10

Upper limits on the visible cross section (cross section ($\sigma$) times acceptance ($A$) times efficiency ($\epsilon$)) at the 95% CL...
Table 11

Data from n7_model_independent

10.17182/hepdata.67127.v1/t11

Upper limits on the visible cross section (cross section ($\sigma$) times acceptance ($A$) times efficiency ($\epsilon$)) at the 95% CL...
Table 12

Data from n8_model_independent

10.17182/hepdata.67127.v1/t12

Upper limits on the visible cross section (cross section ($\sigma$) times acceptance ($A$) times efficiency ($\epsilon$)) at the 95% CL...
Table 13

Data from table8

10.17182/hepdata.67127.v1/t13

Mean reconstruction efficiencies $(\epsilon)$ and RMS of the reconstruction efficiencies for various black hole and string ball models.

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