Gluon Saturation and the “Color Glass Condensate” A new experimental direction for “QCD at RHIC”

10/29/00

R. Seto

pA at RHIC

nRun Various Nuclei to chart out effects

nNeed pp to “Normalize”

npA Needed for heavy ion program

npAu assume L=ÖL(pp)xL(AA)

n100(p) x 100(Au) or 250(p) x 100(Au)

nAs Example – PHENIX

nWould like to measure x1, x2,,Q2

nFor 2à1 Process (Sea quarks) e.g. Drell Yan, xF=x1-x2,, , M2=Sx1x

nFor 2 à2 Process, e.g. (gluon distribution) Direct Photon, Open Charm, J/y

nNeed to measure Outgoing Jet -Tough – Perhaps add a jet detector to PHENIX

nFor the purpose of this talk – assume present PHENIX, upgrades suggested at end

nMuon Arms

n(10¡-30¡) (12¡-30¡)

n E>2GeV

nCentral Arms (70¡-110¡ not shown)

nElectrons/Photons