Loading in 5 sec....

Theory Summary H. Stöcker, FIASPowerPoint Presentation

Theory Summary H. Stöcker, FIAS

- 102 Views
- Uploaded on
- Presentation posted in: General

Theory Summary H. Stöcker, FIAS

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

- Astrophysics
- Lattice
- Colored Glass
- Fluctuations & DCCs
- J/Psi & EM Probes
- Strangeness
- Transport Theory
- Hydro & Jets
- Apologies

- Ellis Antimatter- Matter asymmetry: BB
- Bombaci Strange Quarkstars & GRB
- Banyopadhyay Massive SQS possible
- Bhattacharyya Transition NS- SQS
- Mishra CSC-> SQS-Cooling curves!

QGP

Recreate the first 10-6 seconds …

… and probe the quark-hadron

phase transition

LHC

LHC

pbm&Stachel

“Neutron Stars”

Bombaci

“traditional” Neutron Stars

Hadronic Stars

Hyperon Stars

Hybrid Stars

Quark Stars

Strange Stars

Supernova-GRB connection: the Quark-Deconfinement Nova model

Progenitor star

Supernova explosion

Quark Star

Mass accretion on metastable NS

Gamma Ray Burst

Bombaci

- First ever observed Double Pulsar System, Burgay et al., Nature 426 (2003) 531
- Keplerian parameters Porb=2.45 h, ap , e = 0.088,and To measured from the pulsar timing data.
- Pulsar A has a spin period 22.7 ms and M=1.337 M; those of Pulsar B are 2.8 s and M= 1.25 M ,
- Accurate measurements of relativistic corrections to the Keplerian description,
- Enormous bursts of gravitational waves.

Bandyopadhyay: will allow to pin down R: spin-orbit cp

Best EXO- fit values: R =11.5 km, but M=1.8M = SQS!?

- Allowed EOS : M max theo> M highest obs
Hulse-Taylor pulsar , Mobs= 1.44 M

Radio Binary pulsar systems , M obs= 1.56 M

- Softer EOS ruled out by EXO 0748-676!

- Gavai
- Laermann
- Order of Phasetransition?
- Speed of sound?

Taylor series: order 8

Large lattices required:

L > 6/m_pi, to avoid large finite size effects

Small quark masses:

M_pi/m_rho=0.31

Critical endpoint!

Gavai, Gupta hep-lat/0412035

Noninteracting?

Continuum limit taken

New method for E, P, S

Use anomaly measure for Cv and Cs

Gavai, Gupta, Mukherjee, hep-lat/0412036 and in preparation

Laermann‘s Talk

- Venugopalan
- Kovchegov
- McLerran

The demise of the Structure function: R. Venugopalan

- Dipoles (and multipole) operators may be more
relevant observables at high energies

- Are universal-process independent.
- RG running of these operators - detailed tests of
high energy QCD.

Jalilian-Marian, Gelis;

Kovner, Wiedemann

Blaizot, Gelis, Venugopalan

RdAu

pT

RCP

pT

from D. Kharzeev, Yu. Kovchegov., K. Tuchin, hep-ph/0405045, where we construct a

model based on above physics + add valence quark contribution

Peeking through the Colored Looking Glass

A perspective on Future Directions?

Color Glass Condensate as Medium:

Pomerons, Odderons, Reggeons as Quasiparticle excitations of the CGC

-> ODD Couplerons develop: Larry, marrying with Klaus Werner??

Ploops: (Pomeron loops) How a little fluctuation becomes a big problem

The CGC and the QGP: Is the sQGP really the CGC? Is rapid “thermalization” due to the CGC? Does flow arise largely from the CGC?

Comments about the LHC: The CGC Machine

1

- Koch
- Csörgö
- Chandrasekar
- Randrup

Fluctuation studies

KOCH‘s

- K/p fluctuations increase towards lower beam energy
- Significant enhancement over hadronic cascade model

- p/p fluctuations are negative
- indicates a strong contribution from resonance decays

Taken from Christoph Roland

NA49 Preliminary

NA49 Preliminary

- Lee
- Mustafa
- Koch

Summary of Lee’s Talk

- Reported on the QCD NLO Quarkonium- Gluon/hadron dissociation cross section.
Large correction even for upsilon system, especially near threshold

2. The corrections becomes smaller with thermal quark and gluon mass of larger than 200 MeV

Thermal width of J/y : 1 GeV at T=600 MeV@ 1mb

3. The dissociation cross section due to quarks are less than 10 % of that due to the gluons.

The quenched lattice calculation of the mass and width of J/y at finite temperature should be reliable.

UrQMD 1999

NA50

2002

- Rafelski
- Cleymans
- Braun Munzinger
- Bleicher

- 1st Order phase transition at high mueB
- No P.T. at low mueB: Xing
- Search for irregularities around E beam = 10-40 GeV:
- Flow, strangeness, E-by-E

Plot from L. Bravina and E. Bratkovskaya shown in Bleicher’s talk

Rafelski‘s

Powerful

new

method

- 4 pi and mid-y abundancies: OK
But not K+/pi!

- Energy dependence: OK
- Hadron-string models work well
BUT MULTI-STRANGE BARYONs????

Alt: Four parameter T, Mue, Gamma-mue, Gamma-s model ok? Rafelski

- Bound P and K - nuclear systems: strong interaction pbars suppress vector fields
- Discrete bound states with binding energies ~ 100th MeV and 20 fm/c widths,
Y. Akaishi and T. Yamazaki , Phys. Rev. C65 (2002) 044005

I. Mishustin et al

- Formation of cold and highly dense nuclear system ~ 3-5 n0,
- ‘Study of dense p - nuclear systems’ at FAIR and K-Nucleus at J-PARC.

- Shuryak
- Heinz
- Chauduri

proton

pion

nucl-ex/0410003

Hydro models:

Hirano

(3d)

Teaney

(w/ & w/o

RQMD)

Kolb

Huovinen

(w/& w/o

QGP)

A gas of

Relativistic

pions =>

Relativisitc QGP

=>

The softest point

<= RHIC

QGP pressure is nearly balanced by the vacuum

pressure: p=p(QGP)-B

Viscosity: Aswindini, Chaudhuri

40

158

P.K. Sahu et al, arXiv:nucl-th/0206010

Nara

Huge Plasma pressure!

HSD: pt>2 GeV/c

Cassing, Gallmeister, Carsten Greiner, HSD

SPS

RHIC

LHC

- Consistent estimate with
- hydrodynamic analysis
- But:
- assumes to much action in QGP

F.Karsch, Nucl.Phys.A698 (2002)

Ivan Vitev,LANL

S.A. Voloshin, Nucl. Phys. A715, 379 (2003).

Z. Lin et al., Phys. Rev. Lett., 89, 202302 (2002).

R. Fries et al., nucl-th/0306027.

D. Molnar and S.A. Voloshin, PRL 91, 092301(2003).

*LEPS: Phys. Rev. Lett. 91, 012002-1 (2003).

STAR Preliminary

- v2 of f and r0

J. Castillo, S. Salur , P. Sorensen

Xianglei Zhu FIAS/STAR from Bleicher‘s talk-spares

- Flow of D+Dbar & J/Y followslight hadrons but v2 < 3%

Xianglei Zhu, M.Bleicher

- How much of jet quenching due to JET->Hadron coll?
- Measure leading particle kind & p-tot -
- Different X-sections – different quenching...
- Jets thru equilibrized plasma-> Machshock in Plasma!
- What is the sound velocity of the medium ?
- Use jet-induced Mach-cones -> c_s of plasma !

Rho + Proton suppression

50% of p_T - Suppression

due to hadron

Rescattering !

Plasma suppression

- p-p jet angular correlations o.k.
- near-side jet angular correlation o.k. for central Au+Au
- 50% too little suppression of away-side jet by hadrons !
- 50% QGP needed !

HSD

(pre-)hadronic FSI

Plasma suppression

STAR

- W. Cassing, K. Gallmeister,
- Carsten Greiner,
- hep-ph/0403208, QM’04 Proceedings

New hydro phenomenon:“conical” Mach Shock flow

H.Stöcker, W. Greiner Schopper 1975

Machshocks in Nuclei

H.Stöcker, nucl-th/04:

Jet in QG-Plasma=Machshock, Wakes

PROOF OF THERMALIZED PLASMA!

-> Cs -> Vflow compression of dense plasma

Phase transition

Casalderey-SolanaShuryak Teaney, hep-ph/04…..

Hadronic rescattering responsible for energyloss?

Emission angle alpha relativ to jet axis:

Cos (alpha)

= Cs / V (jet)

Cs~ 0.3 in hadron matter

Cs = 0.57 for

m = 0

Thermalized QG plasma

Bear Mountain 1974

2-4 AGeV/c Carbon on Silver

Nuclear EoS Lee-Wick (m=0) state

Distribution of radial velocity v_r (left) and modulus v (right).(note tsunami-like features, a positive and negative parts of the wave shuryak teany)

Away-side jet ~2sdip at p – 1.1:

60° Mach peak around Jetaxis, all bins

wrong projection, should be clear in principle axis system of the jet

=+/-1.1=2.0,4.2

flow of matter normal to the Mach cone seems to be observed! See data from STAR, Fuqiang Wang, JPhysG, QM04 nucl-ex/0404010, but stable?? J. Adams… 0501016

THANK YOU ALL!!!