2019/09/06 by Bland, L. C., Brash, E. J., Crawford, H. J. +19 · 1 citation
#FOS: Physical sciences #Nuclear Experiment (nucl-ex)
paper · doi:10.48550/arxiv.1909.03124
We report measurements of forward jets and dijets produced in Cu+Au collisions at √sNN=200 GeV at the Relativistic Heavy Ion Collider. We also report dijet production cross sections in p+p collisions at √(s)=510 GeV. We use the invariant dijet mass to search for indications of new particles. The p+p dijet results are compatible with string fragmentation models tuned to fit LHC data. The Cu+Au jet results far exceed Feynman scaling limits, and are compatible with models that incorporate string fusion to increase parton energy, acting as a QCD accelerator. The Cu+Au dijet results can be mostly explained by double parton scattering due to a parton flux from multiple p+p interactions with √(s)>>√sNN. Further indication of the increased parton energy is obtained from evidence of single- and double-Υ(1S) production in the forward direction in Cu+Au collisions. Finally, we report evidence for the production of a new resonance, reconstructed from its dijet decay.