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We report measurements of forward jets and dijets produced in Cu+Aucollisions at $\sqrt{s_{NN}}=200$ GeV at the Relativistic Heavy Ion Collider.We also report dijet production cross sections in p+p collisions at$\sqrt{s}=510$ GeV. We use the invariant dijet mass to search for indicationsof new particles. The p+p dijet results are compatible with stringfragmentation models tuned to fit LHC data. The Cu+Au jet results far exceedFeynman scaling limits, and are compatible with models that incorporate stringfusion to increase parton energy, acting as a QCD accelerator. The Cu+Au dijetresults can be mostly explained by double parton scattering due to a partonflux from multiple p+p interactions with $\sqrt{s}>>\sqrt{s_{NN}}$. Furtherindication of the increased parton energy is obtained from evidence of single-and double-$\Upsilon$(1S) production in the forward direction in Cu+Aucollisions. Finally, we report evidence for the production of a new resonance,reconstructed from its dijet decay.

Observation of Feynman scaling violations and evidence for a new resonance at RHIC