Search for light resonances decaying to boosted quark pairs and produced in association with a photon or a jet in proton–proton collisions at s=13TeV with the ATLAS detector

M. Aaboud, G. Aad, B. Abbott, O. Abdinov, B. Abeloos, S.H. Abidi, O.S. AbouZeid, N.L. Abraham, H. Abramowicz, H. Abreu, R. Abreu, Y. Abulaiti (+2873 others)
2019 Physics Letters B  
This Letter presents a search for new light resonances decaying to pairs of quarks and produced in association with a high-p_T photon or jet. The dataset consists of proton-proton collisions with an integrated luminosity of 36.1 fb^-1 at 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
more » ... 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.
doi:10.1016/j.physletb.2018.09.062 fatcat:4xa6iqf6jbbn7ec3p42ovagfzm