PHENIXCharge to the commitee

     The P-25 PHENIX team wishes to formally join the Silicon UpgradeProject, whose purpose is to allow detached-vertex determination incollisions that will result in the identification of open charm.

     P-25 group management and nuclear-physics program managementrequests the review committee to evaluate the following issues:1)  The resource level, both staff and financial, required to carry outthe proposed commitment in each of the fiscal years from FY'04-FY'08.2)  The most likely technical challenges to be faced by the team, eithermechanically or electronically, and the associated risk to the program.3)  The quality of the physics opportunities opened by the upgrade.4)  The impact on the team's ability to carry on world class researchusing the muon arms and the MVD during the construction period of theupgrade.     Thank you for agreeing to help us evaluate this exciting newdirection at RHIC.

D M Lee 6-17-2003

PHENIXD M Lee 6-17-2003

CDR Muon Physics Program

PHENIX

D M Lee 6-17-2003

Muon Spin Physics Program

Quark Polarization / Flavor Decomposition via Parity Violating W+ -> μ+ or μ + X

Gluon Polarization via J/ -> μ+ μ or D or B -> μ+ or μ + X

TransversityProgram requires high luminosity, good polarization, 500 GeV, and

identification of heavy quark decays!

Polarized p-p collisions at 200, 500 GeV

PHENIXD M Lee 6-17-2003

Physics Program - Vector Meson suppression

PHENIXsimulated +- mass spectrum

NA50 -- Anomalous J/ suppression. Evidence for QGP??

But J/’s are also suppressed by non-QGP effects such as absorption, shadowing, etc; as seen in the results from our E866/NuSea measurements at Fermilab.

A signature of Quark-gluon plasma (QGP) is the suppression of J/ production. The formation of J/’s in a QGP is predicted to be inhibited by color-screening.

A = pA

PHENIX

D M Lee 6-17-2003

Parton structure, modification in nuclei, spin-dependence and the Quark Gluon Plasma(QGP):

• Flavor asymmetry of the nucleon sea and its spin-dependence; origins from meson-cloud of the nucleon

• Gluon structure functions, their shadowing in nuclei and spin-dependence

• Energy loss & fragmentation of partons (light & heavy) in nuclei to elucidate the parton dynamics of these processes. Contrast with same in hot/high-density matter.

• Heavy-quark (open and closed-c,b) production and suppression in cold nuclei & in QGP.

• Characteristics of heavy-ion collisions through charged particle multiplicities, reaction plane measurements, etc.

PHENIXActivities Areas

Muon Spectrometers

Barnes, Brooks, Burward-Hoy, Kunde, Lee, Leitch, Liu, McGaughey, Moss, Silvermyr, Sondheim

MVD

Sullivan, van Hecke, Boissevain

Magnet Design and Simulation

Sondheim

Silicon Upgrade

Kunde, Lee, McGaughey, Moss, Sullivan, van Hecke

FCAL

Burward-Hoy, Kunde

Theory

Raufeissen, Johnson

D M Lee 6-17-2003

D M Lee 6-17-2003

PHENIXpast activities

•Muon Arm Construction – installed South 2001, North 2002

•MVD construction – installation complete 2002

•Run 2 data taking (2002), pp analysis, paper submitted to PRL

•Run 3 data taking (2003), dAu analysis started

•Analysis tools and software developed

•Silicon vertex upgrade initiated, LOI written

•Routine Maintenance of detector systems

•Host of Muon Workshop – very successful, 50 people

PHENIXInterest Areas

Physicist Topic

Barnes W physics

Brooks J/psi suppression

Burward-Hoy J/psi and gluon shadowing

Kunde QGP

Lee heavy quark enhancement

Leitch shadowing in dAu

Liu W physics

McGaughey Open Heavy flavor

Moss Spin Physics

Raufeissen Hard Processes

Silvermyr J/psi

Sullivan Reaction plane

vanHecke Global properties

D M Lee 6-17-2003

PHENIXInvolvement

D M Lee 6-17-2003

Detector Council Members: Sullivan(MVD), Brooks(past muon), Leitch(past muon), McGauphey(past muon)

Subsystem managers: Lee(muon mechanical)

Executive Committee: Leitch

Institutional Board: Barnes

Physics working groups: all, Brooks(heavy convenor),Sullivan(past hadron convenor)

Paper writing: Brooks(ppg017),Burward-Hoy(ppg009,ppg021), Leitch(ppg011), Silvermyr(ppg001,ppg019), Sullivan(ppg021,ppg026), van Hecke(ppg009)

Internal paper review: Lee(IRC0014,IRC024),Silvermyr(IRC028)

Data Production Manager: Silvermyr(run03)

Period coordinator: Leitch(run03)

PHENIX Online Documentation: van Hecke

Upgrades proposal: Kunde, Lee, McGaughey, Sullivan, van Hecke

Integration Engineer: Sondheim(muon), Boissevain(MVD)

RHIC at Brookhaven National Laboratory

RHIC is first dedicated heavy ion collider10 times the energy previously available!

PHENIX

D M Lee 6-17-2003

South Muon Arm - 2001

North Muon Arm - 2002

MVD 2002

FCAL 2002

PHENIXD M Lee 6-17-2003

South Muon Arm North Muon Arm

It only took 9 years

PHENIXD M Lee 6-17-2003

230 cm

330 cm

Station 2 Station 3

PHENIXD M Lee 6-17-2003

South- FEE

Station-3

Chassis

CROC board

PHENIXD M Lee 6-17-2003

PHENIXMVD half cylinder before run 3

D M Lee 6-17-2003

PHENIXfuture goals

•Continue to provide leadership in the analysis of muon arms data

•Concentrate on J/psi, hi-pt, spin (original goals), requires high L

•Prepare for the upcoming AuAu run ( run 4)

•Prepare for the upcoming pp spin run (run 5)

•Continue to provide leadership in the silicon vertex endcaps

•Develop physics capabilities of silicon/muon match

•Routine maintenance

Silicon Tracker Upgrade

D M Lee 06-17-2003

D M Lee 6-17-2003

PHENIXWhat the PHENIX team wants from this committee

•Recognize the first rate nature of the physics program, current and new physics with the silicon upgrade

•Acknowledge the contributions made by the PHENIX group

•Agree that current physics and future upgrades for new physics reach are necessary for a viable group

•Recommend that the PHENIX team should proceed with its long range goals and that the silsion tracker upgrade should proceed with LANL playing a major role.

PHENIXD M Lee 6-17-2003

I will show 3 slides from Barbara Jacak’s talk at the Intersersections Meeting in May 2003.

0 RAA vs. predictions

PHENIX Preliminary

shadowing

anti-shadowing

Theoretical predictions:

d+Au: I. Vitev, nucl-th/0302002 and private communication.

Au+Au: I. Vitev and M. Gyulassy, hep-ph/0208108, to appear in Nucl. Phys. A; M. Gyulassy, P. Levai and I. Vitev, Nucl. Phys. B 594, p. 371 (2001).

Initial state: mult. scatt.,shadowing + final state dE/dx (Au+Au)

Also: Kopeliovich, et al (PRL88, 232303,2002)

predict RpA~1.1 max at pT=2.5 GeV projectile as color dipole

PHENIX preliminary

conclusions• Rapid equilibration!

– Strong pressure gradients, hydrodynamics works

• EOS is not hadronic

• The hot matter is “sticky” – it absorbs energy

– See energy loss, disappearance of back-to-back jets

– d+Au data says: final state, not initial state effect

• So, the stuff is dense, hot, and ~ equilibrated

– Is it quark gluon plasma? Sure looks like it to me…

• OK, then where’s the New York Times?

– J/Y suppression or not? Next run

– Tinitial? direct photon analysis underway by PHENIX

Muons!

PHENIX

National Desk | June 19, 2003, Thursday

Scientists Deciphering Atomic Forces Report Hottest,

Densest Matter Ever Observed

By KENNETH CHANG (NYT) 806 words

Late Edition - Final , Section A , Page 23 , Column 1

ABSTRACT - Scientists at Brookhaven National Laboratory create hottest,

densest matter ever observed, and they say it will enable them to understand

makeup of universe a few millionths of a second after Big Bang and cast light

on fundamental forces that hold atomic matter together; say additional

measurements may confirm suspicions that they have created new state of

matter in which protons and neutrons have dissolved into soup of smaller

particles (M) Experiments at the Brookhaven National Laboratory have

created the hottest, densest matter ever observed, recreating conditions a

fraction of a second after the birth of the universe, scientists announced today.

The ultradense matter will help scientists understand the makeup of the

universe a few millionths of a second after the Big Bang and will cast light on

the fundamental forces that hold atomic matter together.

D M Lee 6-17-2003

PHENIXAgenda

10:00 Executive Session

10:30 Overview Lee, 10 min

Muons

10:45 AuAu run Kunde, 10 min

11:00 pp analysis and paper Brooks, 20 min

11:30 Spin Ming, 10 min

11:45 dAu analysis Silvermyr,Burward-Hoy, 30 min

12:30 Lunch

2:00 Status Report on muon arms Leitch, 20 min

2:30 MVD update van Hecke, 10 min

Theory

2:50 Theory related to PHENIX Raufeissen, 20 min

3:20 coffee break

Silicon Upgrade

3:35 Physics and simulations McGaughey, 20 min

4:05 Status of design and proposal Kunde, 20 min

4:35 WBS,cost, manpower Lee, 10 min

4:50 Future activities, priorities and manpower fit Lee, 10 min

5:00 executive session

D M Lee 6-17-2003