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First International Conference on Hard and Electromagnetic Probes of High Energy Nuclear Collisions, Nov 4 - 10, 2004, Ericeira, Portugal. THEORY SUMMARY. Dmitri Kharzeev. Opening talk by H. Satz. Ericeira 2004. QCD maps, ca 1994. E. soft. hard. p T. The Treaty of Tordesillas: - PowerPoint PPT Presentation
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THEORY SUMMARYFirst International Conference on Hard and Electromagnetic Probes of High Energy Nuclear Collisions, Nov 4 - 10, 2004, Ericeira, Portugal Dmitri Kharzeev
Ericeira 2004Opening talkby H. Satz
QCD maps, ca 1994softhardEpT
The Treaty of Tordesillas: Portugal - Spain, 1494Dividing the unknown
The lessons?2. Sharp boundaries do not last long - 1. The less we know, the sharper are the boundaries3. They disappear with the advance of knowledge
One reason:
I would rather discover a single fact, even a small one, than debate the great issues at length without discovering anything new at all.
-Galileo Galilei Why focus on hard probes?But we have even better ones
Asymptotic freedom and hard probesAt short distances, the strong force becomes weak -
one can access the asymptotically free regime in hard processes
But: the harder a parton is hit, the more intense radiation it emits;this happens because even though as Scaling violations, jet structure
Fast partons as a probe In QCD vacuum, the probability of gluon radiation ~ as ln (Q2 / L2);
in medium, the scale L is determined by the properties of matter:In hot quark-gluon plasma L2 = - transport coeff. - size of the systemIn cold nucleus at small xL2 = Qs2 - the saturation scale; QGP: A.Accardi,N.Armesto,A.Majumder,B.Muller,X.N.Wang, U.Wiedemann
CGC: R.Baier, F.Gelis,J.Jalilian-Marian, E.Iancu,L.McLerran, A.Mueller,D.Triantafyllopoulos,K.Tuchin, R.Venugopalan
Heavy quarkonium as a probeTalk by F. Karschthe link between the observablesand the McLerran-Svetitskyconfinement criterion
What do we probe?Strongly coupled Quark-Guon Plasma
Color Glass Condensate
sQGPJ.-P.Blaizot,R.Gavai,F.Karsch,K.Rajagopal,E.ShuryakTalk by F.Karsch:
Strongly coupled QGPF.KarschT-dependence of the running coupling develops in the NP-regionat T < 3 Tc
Percolation deconfinement, CGC ? H.SatzJ. Dias de Deus,C. PajaresT.HatsudaM. Nardi
A.Nakamura and S.Sakai, hep-lat/0406009Talk by T. HatsudaPerfect fluidsQGP: more fluid than water?KSS bound:strongly coupled SUSY QCD = classical supergravity J.P.Blaizot,R.Gavai,T.Hatsuda,K.Rajagopal,E.Shuryak
sQGP and the quasi-particle picture J.-P.Blaizot, K.RajagopalPlot from F. Gelis, hep-ph/0209072Karsch et al, hep-lat/0110208 Effect of collisionsWidth of quasiparticlesDamping is anomalously large
Quark number fluctuations in sQGP R. Gavai
Color Glass Condensate Overviews:J. Bartels,E. Iancu,L. McLerran,A. MuellerR. Venugopalan
In search of the ultimate non-linear evolution equation GLR, MQJIMWLKBKBLV, Recent advances:the role of fluctuations(talk by E. Iancu)Long-standing problem:(talk by J. Bartels)
The ProbesHeavy QuarkoniumJetsHeavy QuarksDileptons
Heavy quark internal energy above TTalks by F.Karsch,P. Petreczky,K. Petrov,F. Zantow,O.Kaczmarek,S. Digal
O.Kaczmarek, F. Karsch, P.Petreczky,F. Zantow, hep-lat/0309121
Heavy quarkonia above TcT.HatsudaTalks by P.Petreczky,K.Petrov,S.Digal,F.Zantow,O.Kaczmarek
Heavy quarkonia above Tc: lattice QCD meets potential modelsTalks by A. Mocsy,P.Petreczky
Try to understand them in a potential model;
note: OPE potential model
Heavy quarkonia above Tc: screening vs ionizationD. Blaschke,M. Nardi,R. RappR. Thews
J/y formation from recombined charm pairsR. ThewsR. RappRecombinationnarrows the rapiditydistribution
Jets Jet dEauGeneva3-jet event at LEP, CERN, Geneva
Jets - II Atlantic ocean,Coast of PortugalAu-Au collision event, RHIC Long Island, New York
Jet suppressionX.-N.WangA.Accardi, A.Majumder,U.Wiedemann
Geometry of jet suppressionFigure from J.Bjorken, FERMILAB-PUB-82-059-TSTAR CollaborationTalks/lectures by N.Armesto, R.Baier, B.Muller, X.N.Wang, U.Wiedemann
Jets and the flowN.ArmestoU.Wiedemann
Sonic boom in sQGP?E.Shuryak
Heavy quark energy loss: U. Wiedemann, M. Djordjevic, X.-N.Wang
Heavy QuarksS. Frixione:Heavy quarks and resummationsR. Vogt:the influence of fragmentationfunctions
M. Djordjevic,U. Wiedemann,X.N. WangEnhancement of the D/h ratio as a signature of the radiative energy loss in the QGPYu.L.Dokshitzer and DK, Phys.Lett.B519 (2001) 199
Dileptons from the QGPE.Shuryak: dileptons from sQGPC.Gale: dileptons andSpectral functions
Baryon dynamicsBaryons and Recombination:talk by R.Hwa
Hard probes of the Color Glass CondensateTalks by R. Baier, H. Fujii, F. Gelis, J. Jalilian-Marian,G. Milhano,A.Mueller, D. Triantafyllopoulos,K.TuchinR. Venugopalan
Quantum effectsAt small x, the gluon propagator is dressed by the quantum evolution: As a result, the gluon propagators at small x acquire an anomalous dimensionthis is because the probability to emit an extra gluon is ~ as ln(1/x) ~ 1Talks by R.Baier,J.Bartels, B.Gay Ducati, E.Iancu,J.Jalilian-Marian,L.McLerran, A.Mueller,D.Triantafyllopoulos,K.Tuchin, R.Venugopalan
Quantum CGC and hard processes on nuclei1) Small x evolution leads to anomalous dimension2) Qs is the only relevant dimensionful parameter in the CGC;.thus everything scales in the ratio 3) Since
Tthe A-dependence is changed => Expect high pT suppression in dAu at small xTalks by R.Baier, B.Gay Ducati, E.Iancu,J.Jalilian-Marian,L.McLerran, A.Mueller,D.Triantafyllopoulos,K.Tuchin, R.Venugopalan
Quantum fluctuations in the presence of classical background: from Hawking radiation to Color Glass Condensate
CGC confronts the data2-particle correlations:breakdown of AGK?J. Jalilian-Marianhadronsdileptons
CGC confronts the dataK. Tuchinhadronscharmcharmonium
CGC confronts the data C. Salgado: DIS and AA
Dileptons from the CGCR. Baier, J. Jalilian-Marian, B. Gay Ducati, F. Gelis
Open charm and charmoniumH. Fujii:superpenetrationF. Gelis: Breakdown of k_t factorization
Nuclear effects at not so small xJ.Qiu:Power corrections to Drell-Yan;Back-to-backcorrelationsL.Tolos:Slow D-mesons in cold nuclear matter
From CGC to Quark Gluon PlasmaTalk byL.McLerranHow does the CGCthermalize so fast?
The Hard Probes Cafis still open1st International Conference on Hard Probes, Ericeira, 20042nd?YES!2nd Hard Probes: San Francisco Bay Area, California, spring of 2006
LBL - INT - BNLOrganizers: X.N.Wang, P.Jacobs,
and finallyCarlos Loureno Jorge Dias de Deus
Helmut Satz Joo Seixas
THANK YOU!!!