Searches for Single and Pair-Produced Dijet Resonances at CMS

Abstract: Searches for resolved dijet resonances at CMS explore physics at high mass, and have placed significant constraints on models of dark matter, grand unification, quark compositeness, dynamical symmetry breaking, additional strong interactions, new gauge bosons and extra dimensions. Conducted for over three decades at hadron colliders, these searches for s-channel production of a single dijet resonance (p p $\to$ X $\to$ jet jet), use the simplest and highest mass signature of new physics with jets. The next simplest search is pair production of resolved dijet resonances with identical masses, produced either non-resonantly (p p $\to$ X X $\to$ [j j] [j j]), or resonantly through a massive intermediate state Y that itself decays to dijet resonances (p p $\to$ Y $\to$ X X $\to$ [j j] [j j]). During Run 2 of the LHC, such a search for resonant pair production of dijet resonances has found hints of a possible new resonance at a mass of around 8 TeV, which should be either confirmed or excluded by the data now accumulating during Run 3. Finally, a new search is just beginning for resonant production of pairs of dijet resonances with non- identical masses (p p $\to$ Y $\to$ X Z $\to$ [j j] [j j]). All the above searches will also be pursued with jets tagged as bottom quarks. I will discuss these searches, that constitute a continuing program of exploration of resolved dijet resonances, pursued at CMS by a strong collaboration among Athens, Fermilab, and other institutions. At the LHC now, and at the HL-LHC for the next generation, these searches will continue to probe the highest available mass scales for new physics in jet final states, scales that will not be surpassed unless and until a higher energy hadron collider is eventually built.

general relativity and quantum cosmologyHEP - experimentHEP - latticeHEP - phenomenologyHEP - theory

Audience: researchers in the topic

( slides )

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