New J/ suppression from 2008 d+Au data compared to theory (Colorado, LANL, FSU)

LANL - M. Leitch 1

New J/ suppression from 2008 d+Au datacompared to theory(Colorado, LANL, FSU)

J/ψ impact parameter dependence not linear with nuclear thickness(Colorado, LANL, FSU)

Recent Cold Nuclear Matter results from d+Au collisions

, and suppression for forward-rapidityd+Au (L. Guo – LANL)

Isolating & quantifying gluon saturation & CNM dE/dx

STAR (prelim)

Upsilon suppression in 2008 d+Au data(Korea U., LANL)

arXiv:1010.1246

arXiv:1010.1246

2/13/2011

LANL - M. Leitch 2

Plot by Leitch @ Seattle/INT Workshop – June 09

J/ψ

energy density

J/ψ Suppression in Au+Au Collisions

New Au+Au J/ suppression from 2007 compared to various theories(Colorado, LANL)

Recent attempt to extrapolate and divide out d+Au cold nuclear matter effects & show “anamolus” suppression in A+A from various experiments(Leitch)

versus centralityversus pT

PHENIX Internal

PHENIX Internal

2/13/2011

LANL - M. Leitch 3

Fixing cross-talk problems by terminating anodes in Muon Tracker – Important especially for W measurements in muon arms(LANL, RIKEN, Korea U.)

Manlift work on station-1 to put termination on

New capacitors that connect anodes to terminators

Terminators designed and installed in tight spaces

2/13/2011

LANL - M. Leitch 4

• replace central arms with solonoid magnet & compact EMCal & HCal• replace South muon arm with very-forward electron-capable spectrometer

(2016-2018)

Leitch (d+Au), Aidala (spin), van Hecke

2/13/2011