Lessons from RHIC for the LHC and vice versa

For the past decade, measurements of semi-inclusive single identified particle spectra and two particle correlations in p-p and A+A collisions at RHIC have produced a treasure trove of results which indicate that the medium produced in Au+Au collisions is a strongly interacting quark gluon liquid in which both light and heavy quarks are suppressed, presumably by energy loss in the hot, dense medium. These results have been confirmed in Pb+Pb collisions at the LHC along with the addition of measurements of jets and di-jets. Results and methods at RHIC and LHC are compared which leads to some interesting conclusions.Comment: 8 pages, 10 figures, Sixth International Conference on Quarks and Nuclear Physics, April 16-20,2012, Ecole Polytechnique, Palaiseau, Paris, Franc

Highlights from RHIC Plus some earlier BNL Highlights in Subnuclear Physics

Highlights of the contributions of Brookhaven National Laboratory to Subnuclear Physics are presented together with recent highlights from RHICComment: 16 pages, 20 figures, International Symposium on Subnuclear Physics: Past, Present and Future, Pontifical Academy of Sciences, The Vatican, October 30-November 2,201

Comments on "Observation of Long-Range, Near-Side Angular Correlations in Proton-Proton Collisions at the LHC" by the CMS collaboration(arXiv:1009.4122v1 [hep-ex])"

It is the purpose of this note to point out that the CMS observation is in line with previous observations in particle physics at large transverse momenta and/or high multiplicities at lower energies, which were interpreted as possible evidence for quark-gluon plasma (QGP), and to suggest other features of the QGP observed in A+A collisions such as radial flow and jet quenching, which should be investigated in p-p collisions in order to provide further evidence for QGP production

Spin physics at RHIC

Operation of RHIC with two beams of highly polarized protons (70%, either longitudinal or transverse) at high luminosity L = 2 x 10{sup 32} cm{sup -2} sec{sup -1} for two months/year will allow the STAR and PHENIX detectors to perform high statististics studies of polarization phenomena in the perturbative region of hard scattering where both QCD and ElectroWeak theory make detailed predictions for polarization effects. The collision c.m. energy, {radical}s = 200 - 500 GeV, represents a new domain for the study of spin. Direct photon production will be used to measure the gluon polarization in the polarized proton. A new twist comes from W-boson production which is expected to be 100% parity violating and will thus allow measurements of flavor separated Quark and antiquark (u, {bar u}, d, {bar d}) polarization distributions. Searches for parity violation in strong interaction processes such as jet and leading particle production will be a sensitive way to look for new physics beyond the standard model, one possibility being quark substructure

Relativisitic heavy ion collisions

Some of the objectives and observables of Relativistic Heavy Ion Physics are presented. The first experimental results from oxygen interactions at CERN, 200 GeV/c per nucleon, and BNL, 14.5 GeV/c per nucleon are shown. The data indicate more energy emission than was originally predicted. 25 refs., 19 figs

Jets at RHIC: How to find the BDMPS effect at RHIC using inclusive high P{sub T} hadrons and hadron pairs

There is a rare and clear consensus among experimentalists that jets and hard-scattering phenomena in Relativistic Heavy Ion (RHI) collisions can best (if not only) be studied using leading particles, in the same way that these phenomena were originally discovered and mapped out in p - p collisions