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Search for new phenomena in the dijet mass distribution using $p-p$ collision data at $\sqrt{s}=8$ TeV with the ATLAS detector

The ATLAS collaboration
Phys.Rev. D91 (2015) 052007, 2015

Abstract (data abstract)
Dijet events produced in LHC proton--proton collisions at a center-of-mass energy $\sqrt{s}=8$ TeV are studied with the ATLAS detector using the full 2012 data set, with an integrated luminosity of 20.3 fb$^{-1}$. Dijet masses up to about 4.5 TeV are probed. No resonance-like features are observed in the dijet mass spectrum. Limits on the cross section times acceptance are set at the 95% credibility level for various hypotheses of new phenomena in terms of mass or energy scale, as appropriate. This analysis excludes excited quarks with a mass below 4.06 TeV, color-octet scalars with a mass below 2.70 TeV, heavy $W'$ bosons with a mass below 2.45 TeV, chiral ${W^{\ast}}$ bosons with a mass below 1.75 TeV, and quantum black holes with six extra space-time dimensions with threshold mass below 5.66 TeV.

  • Table 1

    Data from Figure 2

    10.17182/hepdata.66572.v1/t1

    The reconstructed dijet mass distribution (observed) fitted with a smooth functional form (expected) of 4-parameter or 5-parameter.

  • Table 2

    Data from Aux. figure 1

    10.17182/hepdata.66572.v1/t2

    Dijet mass resolution obtained from fully simulated PYTHIA QCD Monte Carlo PYTHIA 8.175 [43], with the AU2 tune obtained from...

  • Table 3

    Data from Aux. figure 11

    10.17182/hepdata.66572.v1/t3

    Total cross sections, branching ratios in qg only and acceptances for qg, qgamma, qW, qZ decays (A) for the q*...

  • Table 4

    Data from Aux. figure 12

    10.17182/hepdata.66572.v1/t4

    Total cross sections (cross section), branching ratios (BR(gg)) and acceptances (A) for decays in gg, for the S8 model.

  • Table 5

    Data from Aux. figure 13

    10.17182/hepdata.66572.v1/t5

    Total cross sections (cross section),next-to-next-to-leading order k-factors, branching ratios (BR(qqbar prime)) and acceptances for decays in q anti-q prime only...

  • Table 6

    Data from Aux. figure 14

    10.17182/hepdata.66572.v1/t6

    Total cross sections (cross section), branching ratios (BR(qqbar prime)) and acceptances for decays in q anti-q prime only (A) for...

  • Table 7

    Data from Aux. figure 15

    10.17182/hepdata.66572.v1/t7

    Total cross sections (cross section), branching ratios (BR(qqbar prime)) and acceptances for all decays (A) for the W* leptophilic model.

  • Table 8

    Data from Aux. figure 16

    10.17182/hepdata.66572.v1/t8

    Total cross sections (cross section), branching ratios only involving q and g (BR(q/g)) and acceptances for all decays into jets...

  • Table 9

    Data from Aux. figure 17

    10.17182/hepdata.66572.v1/t9

    Total cross sections (cross section), branching ratios only involving q and g (BR(q/g)) and acceptances for all decays into jets...

  • Table 10

    Data from Aux. figure 18

    10.17182/hepdata.66572.v1/t10

    Observed limit on cross section times acceptance for each width and mass of Gaussian signal shape tested.

  • Table 11

    Data from Aux. figure 19

    10.17182/hepdata.66572.v1/t11

    Observed limit on cross section times acceptance for each intrinsic width and mass of Breit-Wigner signal shape tested. The limits...

  • Table 12

    Data from Aux. figure 20

    10.17182/hepdata.66572.v1/t12

    Observed limit on cross section times acceptance for each intrinsic width and mass of Breit-Wigner signal shape tested. The limits...

  • Table 13

    Data from Aux. figure 21

    10.17182/hepdata.66572.v1/t13

    Observed limit on cross section times acceptance for each intrinsic width and mass of Breit-Wigner signal shape tested. The limits...

  • Table 14

    Data from Aux. figure 22

    10.17182/hepdata.66572.v1/t14

    Observed limit on cross section times acceptance for each intrinsic width and mass of Breit-Wigner signal shape tested. The limits...

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