arxiv: 1501.06197 · v1 · submitted 2015-01-25 · ⚛️ nucl-ex
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An Upgrade Proposal from the PHENIX Collaboration
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In this document the PHENIX collaboration proposes a major upgrade to the PHENIX detector at the Relativistic Heavy Ion Collider. This upgrade, sPHENIX, enables an extremely rich jet and beauty quarkonia physics program addressing fundamental questions about the nature of the strongly coupled quark-gluon plasma (QGP), discovered experimentally at RHIC to be a perfect fluid. The startling dynamics of the QGP on fluid-like length scales is an emergent property of quantum chromodynamics (QCD), seemingly implicit in the Lagrangian but stubbornly hidden from view. QCD is an asymptotically free theory, but how QCD manifests as a strongly coupled fluid with specific shear viscosity near $T_C$, as low as allowed by the uncertainty principle, is as fundamental an issue as that of how confinement itself arises.
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sPHENIX measurement of Open-Charm Baryon-to-Meson Ratios in $p$+$p$ collisions at RHIC
nucl-ex 2026-04 unverdicted novelty 8.0
sPHENIX reports the first measurement of the Λ_c⁺ / D⁰ ratio in p+p collisions at RHIC using its 2024 dataset.
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