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Director Emeritus N. Samios Director Emeritus T.D. Lee

About the RIKEN BNL Research Center

Message from the Director

The RIKEN BNL Research Center (RBRC) has a very bright future, with the prospect of continuing new physics results from RHIC, from new high performance computing capabilities and the possibility of an expanded set of research goals. RBRC continues to attract outstanding theoretical and experimental physicists and they are the basis of RBRC's vibrancy, relevance, and productivity.

RBRC personnel are making leading contributions to the discovery, interpretation and simulation of new phenomena at RHIC. The continued productivity is due to improvements:

Accelerators: Spin Physics at RHIC-II

The recently completed RHIC Run 13 marks the second year of running in the “RHIC II” era. Several important upgrades enabled RHIC to run polarized protons at 255 GeV beam energy at record intensity and polarization, including two new electron lenses to compensate beam-beam effects (e-lenses), a new polarized proton source and several RF upgrades in RHIC and the AGS.

Detectors: Run 14 at PHENIX

PHENIX achieved its Run 13 goals of accumulating a large data set of high energy, high polarization p-p collisions for the spin program.  PHENIX is on track to exceed its foals for heavy ion date in Run 14, thanks to fully operational luminosity enhancements at RHIC.

Progress continued in the design and development of s-PHENIX for full exploitation of RHIC-II capabilities.  ePHENIX based on sPHENIX has been designed as a fully function Day 1 eRHIC detector.

Lattice Gauge Computing

QCDCQ: RBRC is taking advantage of new IBM Blue Gene/Q computers now operational at BNL –

  • Basic QCD quantities such as hadron masses and decay constants have been computed with unprecedented accuracy. More advanced quantities under study include CP violating neutral kaon mixing, muon anomalous magnetic moment, and ε’/ε, which resulted in the 2012 Ken Wilson Lattice Award.
  • QCD thermodynamics: transitions at finite T/μ, relevant for RHIC, are computed using chiral fermions to see chiral symmetry restoration.  Many of these results are now being produced for the first time with nearly physical light quark masses. 

For the future, RBRC is working on aspects of e-RHIC and is exploring with RIKEN and BNL research opportunities in related fields – in particular cosmology.  This year post docs from the RIKEN Astrophysics Group will start working at RBRC with BNL’s Cosmology Group on LSST.

photo of Sam Aronson

Director Samuel H. Aronson

Former Director Brookhaven National Laboratory


Message from the Deputy Director

Research at the RIKEN BNL Research Center includes vigorous activities in both experimental and theoretical physics.

Experimental research includes studies at the Relativistic Heavy Ion Collider: the collisions of heavy ions at ultrarelativistic energies, spin physics in proton-proton collisions, and eventually into electron nucleus collisions at a proposed eRHIC facility.

There is a large and vigorous effort in Lattice Gauge Theory. This includes the study of hadronic physics, such as the computation of weak matrix elements, and computing the thermodynamic behavior of Quantum Chromodynamics.

There is also a strong interest in the theory of High Energy Nuclear Physics, including: saturation and the Color Glass Condensate; the phenomenology of heavy ion collisions; the nature of the Quark Gluon Plasma near the transition temperature (the “semi” QGP); cold dense quark matter (“quarkyonic”); and applications of the AdS/CFT correspondence

photo of Robert Pisarski

Deputy Director Robert Pisarski