Helmut Oeschler Darmstadt University of Technology Transition from Baryonic to Mesonic Freeze Out SQM2006, March 28 th, 2006.

Slides:

Advertisements

Similar presentations

Elliptic flow of thermal photons in Au+Au collisions at 200GeV QNP2009 Beijing, Sep , 2009 F.M. Liu Central China Normal University, China T. Hirano.

Advertisements

Physics Results of the NA49 exp. on Nucleus – Nucleus Collisions at SPS Energies P. Christakoglou, A. Petridis, M. Vassiliou Athens University HEP2006,

First Alice Physics Week, Erice, Dec 4  9, Heavy  Flavor (c,b) Collectivity at RHIC and LHC Kai Schweda, University of Heidelberg A. Dainese,

K*(892) Resonance Production in Au+Au and Cu+Cu Collisions at  s NN = 200 GeV & 62.4 GeV Motivation Analysis and Results Summary 1 Sadhana Dash Institute.

Phase transition of hadronic matter in a non-equilibrium approach Graduate Days, Frankfurt, , Hannah Petersen, Universität Frankfurt.

Relativistic Heavy-Ion Collisions: Recent Results from RHIC David Hardtke LBNL.

DNP03, Tucson, Oct 29, Kai Schweda Lawrence Berkeley National Laboratory for the STAR collaboration Hadron Yields, Hadrochemistry, and Hadronization.

STAR Patricia Fachini 1 Brookhaven National Laboratory Motivation Data Analysis Results Conclusions Resonance Production in Au+Au and p+p Collisions at.

1 Baryonic Resonance Why resonances and why  * ? How do we search for them ? What did we learn so far? What else can we do in the.

Statistical Model Predictions for p+p and Pb+Pb Collisions at LHC Ingrid Kraus Nikhef and TU Darmstadt.

Charm and bottom flavored hadrons production from strangeness rich quark gluon plasma hadronization Inga Kuznetsova and Johann Rafelski Department of Physics,

STAR STRANGENESS! K0sK0s    K+K+ (Preliminary)         

Nu XuInternational Conference on Strangeness in Quark Matter, UCLA, March , 20061/20 Search for Partonic EoS in High-Energy Nuclear Collisions Nu.

Jana Bielcikova (Yale University) for the STAR Collaboration 23 rd Winter Workshop on Nuclear Dynamics February 12-18, 2007 Two-particle correlations with.

5-12 April 2008 Winter Workshop on Nuclear Dynamics STAR Particle production at RHIC Aneta Iordanova for the STAR collaboration.

Resonance Dynamics in Heavy Ion Collisions 22nd Winter Workshop on Nuclear Dynamics , La Jolla, California Sascha Vogel, Marcus Bleicher UrQMD.

ISMD, Berkeley, Aug 4  9, 2007 Kai Schweda 1 Bulk Properties of QCD – matter at Highest Colider Energies Kai Schweda, University of Heidelberg / GSI Darmstadt.

 PID spectra in STAR  Baryon/anti-baryon ratios  Mixed hadron ratios  Statistical models  Chemical fits  Quark coalescence  Sudden hadronization.

Helen Caines Yale University SQM – L.A.– March 2006 Using strange hadron yields as probes of dense matter. Outline Can we use thermal models to describe.

1 Statistical Models and STAR’s Strange Data Sevil Salur Yale University for the STAR Collaboration.

Baryon Strangeness correlatons : signals of a de-confined antecedent Abhijit Majumder Nuclear theory group, Lawrence Berkeley National Lab. In collaboration.

Marcus Bleicher, CCAST- Workshop 2004 Strangeness Dynamics and Transverse Pressure in HIC Marcus Bleicher Institut für Theoretische Physik Goethe Universität.

Masashi Kaneta, LBNL Masashi Kaneta for the STAR collaboration Lawrence Berkeley National Lab. First results from STAR experiment at RHIC - Soft hadron.

Identified Particle Ratios at large p T in Au+Au collisions at  s NN = 200 GeV Matthew A. C. Lamont for the STAR Collaboration - Talk Outline - Physics.

Thermal Production of particles at RHIC (Test of Chemical Freeze-out at RHIC) Jun Takahashi for the STAR collaboration SQM2008, Beijing, China.

T BB Hadronic matter Quark-Gluon Plasma Chiral symmetry broken Chiral symmetry restored LHC Modelling Statistical Operator: implementic conservation.

In-Kwon YOO Pusan National University Busan, Republic of KOREA SPS Results Review.

20 Nov 2006, Quark Matter, Shanghai, ChinaShinIchi Esumi, Univ. of Tsukuba1 Rapporteur 3 Bulk Properties and Collective Phenomena ShinIchi Esumi Univ.

R AA of J/ψ near mid-rapidity in RHIC at √s NN =200 GeV and in LHC Taesoo Song, Woosung Park, and Su Houng Lee (Yonsei Univ.)

Charged Hadron Nuclear Modification Factors in the Beam Energy Scan data from STAR Stephen Horvat for the STAR collaboration Yale University Stephen HorvatCPOD.

Study of the QCD Phase Structure through High Energy Heavy Ion Collisions Bedanga Mohanty National Institute of Science Education and Research (NISER)

Statistical Model Predictions for p+p and Pb+Pb Collisions at LHC Ingrid Kraus Nikhef and TU Darmstadt.

Do small systems equilibrate chemically? Ingrid Kraus TU Darmstadt.

Lecture 10 : Statistical thermal model Hadron multiplicities and their correlations and fluctuations (event-by-event) are observables which can provide.

EXPERIMENTAL EVIDENCE FOR HADRONIC DECONFINEMENT In p-p Collisions at 1.8 TeV * L. Gutay - 1 * Phys. Lett. B528(2002)43-48 (FNAL, E-735 Collaboration Purdue,

Introduction The statistical model approach is established by analysis of particle ratios of the high energy heavy ion collisions in GSI-SIS to CERN-SPS.

Helen Caines Yale University Soft Physics at the LHC - Catania - Sept Questions for the LHC resulting from RHIC Strangeness Outline Chemistry Yields.

Electromagnetic and strong probes of compressed baryonic matter at SIS100 energies Elena Bratkovskaya Institut für Theoretische Physik, Uni. Frankfurt.

M. Djordjevic 1 Theoretical predictions of jet suppression: a systematic comparison with RHIC and LHC data Magdalena Djordjevic Institute of Physics Belgrade,

Strangeness production in HIC Evgeni E. Kolomeitsev Matej Bel University Banska Bystrica hidden open.

Presentation for NFR - October 19, Trine S.Tveter Recent results from RHIC Systems studied so far at RHIC: - s NN 1/2 = 

Helen Caines Yale University 1 st Meeting of the Group on Hadronic Physics, Fermi Lab. – Oct Bulk matter properties in RHIC collisions.

Masashi Kaneta, First joint Meeting of the Nuclear Physics Divisions of APS and JPS 1 / Masashi Kaneta LBNL

HIRSCHEGG, January , 2005 Nu Xu //Talk/2005/01Hirschegg05// 1 / 24 Search for Partonic EoS in High-Energy Collisions Nu Xu Lawrence Berkeley National.

Christoph Blume University of Heidelberg

Heavy-Ion Physics - Hydrodynamic Approach Introduction Hydrodynamic aspect Observables explained Recombination model Summary 전남대 이강석 HIM

Olena Linnyk Charmonium in heavy ion collisions 16 July 2007.

Strange Probes of QCD Matter Huan Zhong Huang Department of Physics and Astronomy University of California Los Angeles, CA Oct 6-10, 2008; SQM2008.

Christina Markert Hot Quarks, Sardinia, Mai Christina Markert Kent State University Motivation Resonance in hadronic phase Time R AA and R dAu Elliptic.

Helmut Oeschler Darmstadt University of Technology Strangeness Production at 1 -2 AGeV Erice, September 2008.

24 Nov 2006 Kentaro MIKI University of Tsukuba “electron / photon flow” Elliptic flow measurement of direct photon in √s NN =200GeV Au+Au collisions at.

Bulk properties at RHIC Olga Barannikova (Purdue University) Motivation Freeze-out properties at RHIC STAR perspective STAR  PHENIX, PHOBOS Time-span.

QM08, Jaipur, 9 th February, 2008 Raghunath Sahoo Saturation of E T /N ch and Freeze-out Criteria in Heavy Ion Collisions Raghunath Sahoo Institute of.

Christina MarkertHirschegg, Jan 16-22, Resonance Production in Heavy Ion Collisions Christina Markert, Kent State University Resonances in Medium.

Christina Markert 22 nd Winter Workshop, San Diego, March Christina Markert Kent State University Resonance Production in RHIC collisions Motivation.

Intermediate pT results in STAR Camelia Mironov Kent State University 2004 RHIC & AGS Annual Users' Meeting Workshop on Strangeness and Exotica at RHIC.

Helen Caines Yale University Strasbourg - May 2006 Strangeness and entropy.

PHENIX Results from the RHIC Beam Energy Scan Brett Fadem for the PHENIX Collaboration Winter Workshop on Nuclear Dynamics 2016.

Strange hadrons and resonances at LHC energies with the ALICE detector INPC 2013 Firenze, Italy 2 -7 June 2013 A. Badalà (INFN Sezione di Catania) for.

Duke University 野中千穂 Hadron production in heavy ion collision: Fragmentation and recombination in Collaboration with R. J. Fries (Duke), B. Muller (Duke),

Review of Structures in the Energy Dependence of Hadronic Observables Christoph BlumeInt. Workshop on Critical Point and Onset of Deconfinement Florence,

A few observations on strangeness production at SPS and RHIC

Strangeness Production in Heavy-Ion Collisions at STAR

Workshop on the physics of HL-LHC, and perspectives at HE-LHC

Fragmentation and Recombination for Exotics in Heavy Ion Collisions

Statistical Model Predictions for p+p and Pb+Pb Collisions at LHC

Current status of Thermalization from available STAR results

Strangeness with CBM Volker Friese

Claudia Höhne, GSI Darmstadt

Volume effects on strangeness production

Presentation transcript:

Helmut Oeschler Darmstadt University of Technology Transition from Baryonic to Mesonic Freeze Out SQM2006, March 28 th, 2006

1.Experimental observation of maximal strangeness content around 30 A GeV comparison with Statistical model NPA 697(2002) Freeze-out condition changes Phys. Lett. B615 (2005) 3.Possible deviation from usual freeze out around 30 A GeV? 4.Strangeness content of a ``corresponding´´ QGP

Chemical Freeze Out J. Cleymans and K. Redlich, PRL 81 (1998) 5284

Baryons Stat. Mod. : All exhibit maxima, but at different locations

Mesons Stat. Mod. : Only K + /π + exhibits a maximum!

Maximum Strangeness around 30 AGeV P. Braun-Munzinger, J. Cleymans, HO, K. Redlich, NPA 697(2002) 902 λ S = 2 sŝ/(uū+ dđ)

Transition from baryonic to mesonic freeze out entropy prop to T 3 J. Cleymans, H.O., K. Redlich, S. Wheaton, Phys. Lett. B615 (2005) Meson dominated Baryon dominated

Transition At this transistion the freeze out condition is changing! Deviations from the simple unique freeze out possible?

S.Wheaton,

S. Wheaton et al., to appear

Freeze-Out Volume from HBT D. Adamova et al., CERES, PRL 90 (2003) √ √

K - /K + Ratio from SIS up to RHIC

T(K - ) < T(K + ) at 1 – 2 A GeV A.Förster, KaoS Collab., PRL 91 (2003) K+K+ K-K-

Strangeness Content A. Schmah et al., TU Darmstadt Hadron gasIdeal gas of quarks NPA 697(2002) 902

Why do we observe the strangeness content of a Hadron Gas and not of a Quark Gluon Plasma?

R.V. Gavai and S. Gupta, PRD 65 (2002) λ s ~ χ S / χ u

Observation qualitatively agree with Stat. Model. But deviations are seen! Different location of maxima as a test? Early freeze out of K + ? Would increase its yield! Equilibrated quark gas would give a very high yield of strangeness! Thank you!

Expected Centrality Dependence (SM) Pion density n(π) = exp(-E π /T) Strangeness is conserved! Kaon density NN N Λ K + n(K) = exp(-E K /T) [g V ∫ … exp[-(E Λ -µ B )/T] J. Cleymans, HO, K. Redlich, PRC 60 (1999)

Qualitative agreement! Except for AGS!

AGS Au+Au 6 A GeV P. Chung et al., E895 Coll. PRL 91(2003) Updated M ~ (A part ) α

All these observation agree with a hadron gas at chemical equilibrium What did we learn? Many arguments that „QGP“ has been formed. 1.What dynamics causes freeze out? 2. Where do we observe quark degrees?

Strangeness Enhancement Data: WA97 New: NA57 Theory: S. Hamieh, K. Redlich A. Tounsi, PL B486 (2000) 61 Strangeness enhancement as a signal of QGP? Canonical strangeness suppression?

λ S = 2 sŝ/(uū+ dđ)

SIS: nuclear EoS, K + and K - : Different freeze out K - via strangeness exchange SIS and AGS: Strangeness exchange important Ξ at 6 AGeV yield in agreement with Stat. Mod. Max. strangeness content around 30 AGeV Transition from Baryonic to Mesonic Freeze Out RHIC: Statistical model works very well LHC:?

SIS: nuclear EoS, K+ and K-: Different freeze out A. Förster et al.,(KaoS Coll.) PRL 91 (2003) SIS and AGS: Strangeness exchange important J. Cleymans et al., PLB 603 (2004) Transition from Baryonic to Mesonic Freeze Out J. Cleymans et al., Phys. Lett. B 615 (2005) RHIC: Statistical model works very well And beyond!

At LHC particle production will be dominated by hard processes! Jets! Will this destroy the simple picture (SM)? More strangeness due to faster decay from the QGP? Less strangeness due to fragmentation? Will one observe a hadronic composition in jets as expected from the two parameters T and μ B ? Interesting already in pp collisions … v2, jet quenching, heavy flavor,…

P. Braun-Munzinger, J. Cleymans, HO, K. Redlich, NPA 697(2002) 902

Do the slopes make a consistent picture? Ni+Ni 1.93 AGeV F. Uhlig, TU DA Diss. Protons, K + and pions cross K - differ! T(stat. Model) = 74 MeV PRC 59 (1999)

Transition

√

A. Mischke, Ph.D. thesis

Statistical Model P. Braun-Munzinger, D. Magestro, K. Redlich, J. Stachel, PL B518 (2001) updated

Statistical Model

Statistical Model for SIS J. Cleymans, H. O., K. Redlich, PRC 59 (1999)

Dynamics of K + and K - K + yield established early by the high-density phase, not changed due to s-conservation (K + from the interior) K + slopes (and angular distributions) dominated by rescattering K - yield established late by Λ and π concentration (K - from the surface) Even if K - from a thermal source of Λ and π, T(K - ) is smaller than T(source). Only those K - are observed which did NOT had an interaction Stat. Model describes the ratios, but does not describe T(K - ).

K - and K + are linked Au+Au and Ni+Ni 1.5 AGeV A. Förster, F. Uhlig et al., KaoS PRL 91 (2003) dashed line: stat. Model K - and K + are linked via strangeness exchange Λ π -> K - N „Law of mass action“ J. Cleymans, et al. PLB603(2004)

Maximum around 30 A GeV