This Letter presents a search for new light resonances decaying to pairs of quarks and produced in association with a high-pTphoton or jet. The dataset consists of proton–proton collisions with an integrated luminosity of 36.1 fb−1at a centre-of-mass energy of √s=13 TeV recorded by the ATLAS detector at the Large Hadron Collider. Resonance candidates are identified as massive large-radius jets with substructure consistent with a particle decaying into a quark pair. The mass spectrum of the candidates is examined for local excesses above background. No evidence of a new resonance is observed in the data, which are used to exclude the production of a lepto-phobic axial-vector Z′boson.
|Number of pages||20|
|Journal||Physics Letters B|
|Early online date||2 Nov 2018|
|Publication status||Published - 10 Jan 2019|
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- School of Physics and Astronomy - Personal Chair of Experimental Particle Physics
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