English

Highlights from BNL and RHIC 2016

Nuclear Experiment 2017-05-31 v1

Abstract

Highlights of news from Brookhaven National Laboratory (BNL) and results from the Relativistic Heavy Ion Collider (RHIC) in the period July 2015-2016 are presented. Transverse single spin asymmetries from polarized p+p collisions are presented for π0\pi^0 and jets as a function of Feynman xFx_F. An energy scan to study the s\sqrt{s} dependence of collectivity and flow for small systems was performed as well as a high luminosity Au++Au run. The failure of a quench protection diode resulted in a pause in the run to replace it, but otherwise performance of RHIC was the best ever. Experimental results discussed are an elegant measurement from STAR of the force between anti-protons using HBT correlations, flow in U+U collisions, an improved method of generating constituent quarks by PHENIX and new Number of Quark Participants (NQP) scaling of ETE_T distributions in p++p,d++Au and Au++Au which worked well. New hard-scattering results as a function of s\sqrt{s} in Au++Au central collisions are presented. Also, measurements of the di-hadron acoplanarity for π0+h\pi^0 +h and γ+h\gamma+h in p+p collisions at s=500\sqrt{s}=500 GeV are presented in terms of the out-of-plane transverse momentum poutp_{\rm out} which differ from the prediction of the TMD framework of parton transverse momentum dynamics.

Keywords

Cite

@article{arxiv.1705.07925,
  title  = {Highlights from BNL and RHIC 2016},
  author = {M. J. Tannenbaum},
  journal= {arXiv preprint arXiv:1705.07925},
  year   = {2017}
}

Comments

Invited lecture at the International School of Subnuclear Physics (ISSP) 54th Course, "The New Physics Frontiers in the LHC-2 Era", Erice, Sicily, Italy, June 14--23, 2016, 16 pages, 19 figures

R2 v1 2026-06-22T19:55:17.678Z