bonner, demello, eppley, geurts, kainz, llope, mutchler, platner, roberts, yepes

AGS: up to ~11.5 GeV/c/N Au, fixed targetE896

RHIC: up to 100 GeV/c/N Au + 100 GeV/c/N Aupolarized proton collisions, up to 250 GeV/c/beam, and p+A

STARLHC: up to 7 TeV p + 7 TeV p collisions

up to 3 TeV/nucleon Pb + 3 TeV/nucleon Pb collisionsp + e collisions at √s = 1.5 TeV

CMS

Experimental Relativistic Heavy-Ion Physics

UrQMDAu+Au100 GeV/c/Nb = 5fm

collide big nuclei at the highest possible speedsform large systems of very hot, very dense nuclear mattertry to measure final state as completely as possible

(build detectors, put them in beam, and write tape!)

→ work back to infer conditions during the collision andthe physical processes leading to observed final states.....

VNIAu+Au100 GeV/c/Nb = 0 fm

order of magnitude jump from previously accessible √s...no two models agree on anything....

brand new field

RHIC:

0.2 0.4 0.6 0.8 1 1.2 1.4

50

100

150

200

250

early universe

LHC

RHIC

baryonic chemical potential µB [GeV]

tem

pera

ture

T

[MeV

]

SPS

AGS

SIS

atomicnuclei neutron stars

chemical freeze-out

thermal freeze-out

hadron gas

quark-gluonplasma

deconfinementchiral restoration

1

10

Strangeness |S|

Enh

ance

men

t E

-

h K0S Λ Λ

–Ξ Ξ

–Ω+Ω

–

0 1 12 2 3

Something funny is going on with the observed “strangeness”...

mass dependence of inverse slopes

0.1

0.2

0.3

0.4

0.5

0 0.25 0.5 0.75 1 1.25 1.5 1.75 2m (GeV/c2)

T (

GeV

)

NA49

NA44

WA97

WA98

are we approaching a new state of matter in the lab?!? called the QUARK-GLUON PLASMA

...so, RHIC has the QGP in every central event?!?!→ RHIC = QGP observation & spectroscopy...

The Solenoidal Tracker at RHIC (STAR)hadrons over wide, azimuthally symmetric, acceptance...

(little concensus on the unambiguous QGP signature)

for the first time, event-by-event physics!(other RHIC experiments less or not capable here → STAR leads the way in QGP spectroscopy)

STAR Level-3 Trigger

other involvementSTAR-EMCPWGs

planned det. upgradesTOFq...TOFr...

STAR Central Trigger Barrel (CTB) STAR Time-Of-Flight Patch (TOFp)

BNL-AGS Experiment 896

...analyzing large set of 1998 Au+Au data towards Λ and Ksreconstruction including direct PID...

CollaborationInstitutes in CMS US CMS serverRDMS CMS server

DocumentsIntroduction to CMS Letter of IntentTechnicalProposalCMS Outreach

General

,

,

,

CERNhomepageLHCexperimentsCommittee(LHCC) SLACSpires Particle Data Group

21 January 2000. For comments or questions regarding this web pages: , CERN 2000 - European Organization for Nuclear Research CMS EXPERIMENT

CMS outreach officeCopyright

4/26/00 12:59 PMCMS INFO http://cmsinfo.cern.ch/Welcome.html

CMS at CERNanother factor of ~30 in Pb+Pb total energy above RHIC Au+Auelectrons, photons, and muons (CMS “~” Phenix, and ALICE “~” STAR)

mid-late this decade