Search for new phenomena in dijet mass and angular distributions from pp collisions at √s = 13 TeV with the ATLAS detector
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Aad, G., Abbott, B., Abdallah, J., Abeloos, B., Aben, R., Abolins, M., ... & Abulaiti, Y. (2016). Search for new phenomena in dijet mass and angular distributions from pp collisions at s= 13TeV with the ATLAS detector. Physics Letters B, 754, 302-322. [http://dx.doi.org/10.1016/j.physletb.2016.01.032]
SponsorshipCERN; ATLAS Tier-1 facilities at TRIUMF (Canada); NDGF (Denmark, Norway, Sweden); CC-IN2P3 (France); KIT/GridKA (Germany); INFN-CNAF (Italy); Netherlands Government; PIC (Spain); ASGC (Taiwan); RAL (UK); BNL (USA); Science & Technology Facilities Council (STFC) ST/H00100X/1 ST/L001209/1 ATLAS Upgrades ST/K001361/1 MINOS/MINOS+ ST/K001310/1 ATLAS Upgrades ST/G50228X/1 PP/E000444/1 ST/K001310/1 ST/K001361/1 ST/K003895/1 GRIDPP GRIDPP PP/D002915/1 PP/E002846/1 ST/H00100X/2 ST/K001361/1 ATLAS Upgrades ST/K00140X/1 1082012 1334588 ST/M007103/1 ATLAS Upgrades ST/L00352X/1 ST/K00137X/1 ST/K001361/1 LHCb Upgrades ST/I006056/1 1369487 ST/H001093/1 ST/J004979/1 ST/J005525/1 ST/K000039/1 ST/L001179/1 ATLAS Upgrade ST/M001474/1 ST/J005487/1 ST/M006980/1 ATLAS Upgrades ST/L003112/1 ST/J003522/2 ST/I003533/1 GRIDPP 1366364 ST/L003414/1 ST/K001361/1 LHCb 1366825 ST/M001431/1 ST/M002306/1 ST/M004937/1 ST/I003533/1 ST/I006056/1 ATLAS Upgrade ST/M001407/1 ATLAS ST/J00474X/1 ST/K001302/1 ST/M001733/1 ST/M001504/1 ST/K001418/1 ST/J00474X/1 ATLAS Upgrades 1521422 1575161 ST/L001195/1 ST/K003895/1 ST/K001329/1 ST/H001093/2 PP/E000347/1 ST/I000119/1 ST/M002306/1 ATLAS Upgrades ST/I006056/1 ATLAS Upgrades ST/L001179/1 1201187 ST/K001248/1 ST/K001310/1 LHCb Upgrades ST/L001144/1 ST/L001179/1 ATLAS Upgrades ST/M004937/1 GRIDPP ST/M006980/1 ST/M000761/1 ST/K001264/1 ATLAS ST/K00073X/1 1370569 PP/E000355/1 ST/K000705/1 ST/K001361/1 ATLAS ST/L006111/1 ST/M002071/1 ATLAS Upgrades ST/I000178/1 ST/I00372X/1 ST/K001310/1 ATLAS ST/K001426/1 ATLAS ST/I00372X/1 GRIDPP ST/K001310/1 LHCb ST/N000463/1; ICREA
This Letter describes a model-agnostic search for pairs of jets (dijets) produced by resonant and non-resonant phenomena beyond the Standard Model in 3.6 fb(-1) of proton-proton collisions with a centre-of-mass energy of root s = 13 TeV recorded by the ATLAS detector at the Large Hadron Collider. The distribution of the invariant mass of the two leading jets is examined for local excesses above a data-derived estimate of the smoothly falling prediction of the Standard Model. The data are also compared to a Monte Carlo simulation of Standard Model angular distributions derived from the rapidity of the two jets. No evidence of anomalous phenomena is observed in the data, which are used to exclude, at 95% CL, quantum black holes with threshold masses below 8.3 TeV, 8.1 TeV, or 5.1 TeV in three different benchmark scenarios; resonance masses below 5.2 TeV for excited quarks, 2.6 TeV in a W' model, a range of masses starting from mZ' = 1.5 TeVand couplings from g(q) = 0.2 in a Z' model; and contact interactions with a compositeness scale below 12.0 TeV and 17.5 TeV respectively for destructive and constructive interference between the new interaction and QCD processes. These results significantly extend the ATLAS limits obtained from 8 TeV data. Gaussian-shaped contributions to the mass distribution are also excluded if the effective cross-section exceeds values ranging from approximately 50-300 fb for masses below 2 TeV to 2-20 fb for masses above 4 TeV.