February 23, 2016 | XLVII. Arbeitstreffen Kernphysik in Schleching | Florian Seck - TU Darmstadt Thermal dileptons as fireball probes XLVII. Arbeitstreffen.

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

Yorito Yamaguchi For the PHENIX collaboration CNS, University of Tokyo 10/14/2008ATHIC2008 1/13.

J. RuppertHot Quarks 2006, May 2006 What does the rho? Lessons from NA60's di-muon measurement. Jörg Ruppert Nuclear Theory, Department of Physics, Duke.

Di-electron Continuum at PHENIX Yorito Yamaguchi for the PHENIX collaboration CNS, University of Tokyo Rencontres de Moriond - QCD and High Energy Interactions.

Bingchu Huang, USTC/BNL 1 Bingchu Huang (for STAR Collaboration) University of Science and Technology of China (USTC) Brookhaven National Laboratory (BNL)

In relativistic heavy ion collisions a high energy density matter Quark-Gluon Plasma (QGP) may be formed. Various signals have been proposed which probe.

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.

Measuring initial temperature through Photon to dilepton ratio Collaborators: Jan-e Alam, Sourav Sarkar & Bikash Sinha Variable Energy Cyclotron Centre,

STAR Patricia Fachini QM20081 ρ 0 Production at High p T in Central Au+Au and p+p collisions at  s NN = 200 GeV in STAR STAR Patricia Fachini Brookhaven.

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

Freeze-Out in a Hybrid Model Freeze-out Workshop, Goethe-Universität Frankfurt Hannah Petersen.

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

INT 10-2A, July 13, 2010 INT 10-2A, July 13, 2010 Itzhak Tserruya Dileptons: outstanding issues and prospects.

Finite Size Effects on Dilepton Properties in Relativistic Heavy Ion Collisions Trent Strong, Texas A&M University Advisors: Dr. Ralf Rapp, Dr. Hendrik.

WWND, San Diego1 Scaling Characteristics of Azimuthal Anisotropy at RHIC Michael Issah SUNY Stony Brook for the PHENIX Collaboration.

Charmonium Production in Heavy-Ion Collisions Loïc Grandchamp Lawrence Berkeley National Laboratory Texas A&M, Dec. 10 th 2004 w/ R. Rapp.

Dilepton production in HIC at RHIC Energy Haojie Xu( 徐浩洁 ) In collaboration with H. Chen, X. Dong, Q. Wang Hadron2011, WeiHai Haojie Xu( 徐浩洁 )

1 Jozsó Zimányi (1931 – 2006). 2 Jozsó Zimányi I met Prof. Zimányi in India in Member, NA49 and PHENIX Collaborations Nuclear Equation of State.

Centrality Dependent Soft Direct Photon Yield and v n Measurements by PHENIX Richard Petti (BNL) for the PHENIX Collaboration QCD Chirality Workshop 2015.

In-medium hadrons and chiral symmetry G. Chanfray, IPN Lyon, IN2P3/CNRS, Université Lyon I The Physics of High Baryon Density IPHC Strasbourg, september.

Using Higher Moments of Fluctuations and their Ratios in the Search for the QCD Critical Point Christiana Athanasiou, MIT 4 work with: Krishna Rajagopal.

Pornrad Srisawad Department of Physics, Naresuan University, Thailand Yu-Ming Zheng China Institute of Atomic Energy, Beijing China Azimuthal distributions.

Nu Xu1/20 ”ATHIC2012“, Pusan, Korea, November , 2012 QCD in the Twenty-First Century (1)Higgs (-like) Particle – - Origin of Mass, QCD dof - Standard.

Study of hadron properties in cold nuclear matter with HADES Pavel Tlustý, Nuclear Physics Institute, Řež, Czech Republic for the HADES Collaboration ,

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

Effect of thermal fluctuation of baryons on vector mesons and low mass dileptons ρ ω Sanyasachi Ghosh (VECC, Kolkata, India)

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.

Di-electron measurements with HADES at SIS100 Motivation Motivation HADES di-electron results (SIS 18) - summary HADES di-electron results (SIS 18) - summary.

Chiral phase transition and chemical freeze out Chiral phase transition and chemical freeze out.

09/15/10Waye State University1 Elliptic Flow of Inclusive Photon Ahmed M. Hamed Midwest Critical Mass University of Toledo, Ohio October, 2005 Wayne.

Characterizing non-equilibrium and radial flow at RHIC with Tsallis statistics What physics can spectra address? Why do we need a new BlastWave model and.

System size dependence of freeze-out properties at RHIC Quark Matter 2006 Shanghai-China Nov System size dependence of freeze-out properties.

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

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

Dilepton Radiation Measured in PHENIX probing the Strongly Interacting Matter Created at RHIC Y. Akiba (RIKEN Nishina Center) for PHENIX Collaboration.

Loïc Grandchamp Lawrence Berkeley National Laboratory “Probing QCD with High Energy Nuclear Collisions” Hirschegg, Jan ’05 with H. van Hees, S.

Robert Pak (BNL) 2012 RHIC & AGS Annual Users' Meeting 0 Energy Ro Robert Pak for PHENIX Collaboration.

9 th June 2008 Seminar at UC Riverside Probing the QCD Phase Diagram Aneta Iordanova.

School of Collective Dynamics in High-Energy CollisionsLevente Molnar, Purdue University 1 Effect of resonance decays on the extracted kinetic freeze-out.

Olena Linnyk Charmonium in heavy ion collisions 16 July 2007.

X. DongAug , 2014 TPD RBRC Workshop, BNL Dielectron Mass Spectrum & Elliptic Flow at Au+Au 200 GeV Xin Dong Lawrence Berkeley National Laboratory.

Bulk properties of the system formed in Au+Au collisions at √s NN = 14.5 GeV using the STAR detector at RHIC Vipul Bairathi (for the STAR Collaboration)

Purdue University, April 28, 2011 Purdue University, April 28, 2011 Itzhak Tserruya Dileptons as a probe of the Quark Gluon Plasma.

BY A PEDESTRIAN Related publications direct photon in Au+Au  PRL94, (2005) direct photon in p+p  PRL98, (2007) e+e- in p+p and Au+Au 

Roy A. Lacey, Stony Brook, ISMD, Kromĕříž, Roy A. Lacey What do we learn from Correlation measurements at RHIC.

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.

JET Collaboration Meeting June 17-18, 2014, UC-Davis1/25 Flow and “Temperature” of the Parton Phase from AMPT Zi-Wei Lin Department of Physics East Carolina.

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

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

24 June 2007 Strangeness in Quark Matter 2007 STAR 2S0Q0M72S0Q0M7 Strangeness and bulk freeze- out properties at RHIC Aneta Iordanova.

PHENIX dileptons Thomas K. Hemmick Stony Brook University.

Dilepton production in UHIC as probe to dense matter Qun Wang Univ of Sci & Tech of China (USTC) J.Deng, QW, N.Xu, P.-f. Zhuang, PLB701,581(2010); H.-j.

05/23/14Lijuan Ruan (BNL), Quark Matter The low and intermediate mass dilepton and photon results Outline: Introduction New results on dileptons.

Systematic measurement of light vector mesons at RHIC-PHNEIX Yoshihide Nakamiya Hiroshima University, Japan (for the PHENIX Collaboration) Quark Matter.

Elliptic Flow of Inclusive Photon Elliptic Flow of Inclusive Photon Ahmed M. Hamed Midwest Critical Mass University of Toledo, Ohio Oct. 22,

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

J. Zhao Hard Probe 2012, Cagliari 1, Lawrence Berkeley National Lab, USA 2, Shanghai Institution of Applied Physics, CAS, China Di-electron Production.

Dileptons: Penetrating probes at all time scales Very low cross-section with QCD medium Window into all stages of system evolution Chronological hierarchy.

Dynamics of Nucleus-Nucleus Collisions at CBM energies Frankfurt Institute for Advanced Studies Elena Bratkovskaya , CBM Workshop „ The Physics.

 Collision of heavy nuclei at relativistic energies leads to formation of Quark- Gluon Plasma (QGP).  Strong confirmation arises from the recent observation.

Dalitz Decays and Bremsstrahlung from in-Medium EM Spectral Functions Ralf Rapp Cyclotron Institute + Physics Department Texas A&M University College Station,

Di-electron elliptic flow in

ENERGY AND SYSTEM SIZE DEPENDENCE OF CHEMICAL FREEZE-OUT

25 Years of Dilepton Experiments

Richard Petti for the PHENIX Collaboration Stony Brook University

Day of Femtoscopy 2016, Gyöngyös

HADES The Baryon-rich Side of the Phase Diagram

QCD (Quantum ChromoDynamics)

Presentation transcript:

February 23, 2016 | XLVII. Arbeitstreffen Kernphysik in Schleching | Florian Seck - TU Darmstadt Thermal dileptons as fireball probes XLVII. Arbeitstreffen Kernphysik in Schleching Florian Seck – TU Darmstadt Modeling thermal dileptons at SIS energies

February 23, 2016 | XLVII. Arbeitstreffen Kernphysik in Schleching | Florian Seck - TU Darmstadt | 2 / 24 Landmarks in the phase diagram of QCD matter What do we know? chemical „freeze-out“ from measured particle yields analyzed with Statistical Hadronization Model crossover transition at vanishing μ B (lattice QCD) SHM : J. Cleymans: PRC 73 (2006) , A. Andronic PLB 673 (2009) 142 ALICE : J. Stachel, arXiv: STAR : PRC 79 (2009) HADES : NPA 931 (2014) FOPI : PRC 76 (2007) Lattice : T c (  B ) = 154(9) [ (7)  B 2 ] MeV

February 23, 2016 | XLVII. Arbeitstreffen Kernphysik in Schleching | Florian Seck - TU Darmstadt | 3 / 24 Landmarks in the phase diagram of QCD matter : B.J. Schaefer and J. Wambach What do we know? chemical „freeze-out“ from measured particle yields analyzed with Statistical Hadronization Model crossover transition at vanishing μ B (lattice QCD) What is predicted? possible 1 st order phase transition and critical point at large μ B QCD inspired effective models predict the melting of the condensate (order parameter) χ Direct  ALICE: JPCS 446 (2013) PHENIX: PRL 104 (2010) NA60 (  +  -) : H.J.Specht: AIP Conf.Proc (2010)

February 23, 2016 | XLVII. Arbeitstreffen Kernphysik in Schleching | Florian Seck - TU Darmstadt | 4 / 24 Exploring QCD phase structure with heavy-ion experiments using rare probes What could be done? phase boundary(ies)  fluctuations of conserved quantum numbers  flavor production (multi-strange, charm) change in microscopic degrees of freedom restoration of chiral symmetry emitting source temperature  electromagnetic probes leave collision zone undistorted  real photons only carry transverse momentum  dileptons carry extra information: invariant mass

February 23, 2016 | XLVII. Arbeitstreffen Kernphysik in Schleching | Florian Seck - TU Darmstadt | 5 / 24 Electromagnetic probes in heavy-ion collisions from pre-equilibrium phase from thermalized medium: QGP and hot hadron gas from decays after thermal freeze-out Dileptons are emitted during the whole history of a heavy-ion collision:

February 23, 2016 | XLVII. Arbeitstreffen Kernphysik in Schleching | Florian Seck - TU Darmstadt | 6 / 24 Electromagnetic probes in heavy-ion collisions Hadonic “cocktail” + thermal signal realistic emission rates accurate description of fireball evolution Dilepton spectra reflect whole history of collision crucial to have:

February 23, 2016 | XLVII. Arbeitstreffen Kernphysik in Schleching | Florian Seck - TU Darmstadt | 7 / 24 Electromagnetic probes in heavy-ion collisions Insights from theory integrated yield of thermal radiation in the mass range GeV/c 2 is sensitive to the lifetime of the fireball R. Rapp, H. van Hees: PLB 753 (2016) 586–590 dilepton yield determined by interplay between temperature and fireball volume slope of dileptons in the intermediate-mass range constitutes a blue-shift free fireball thermometer

February 23, 2016 | XLVII. Arbeitstreffen Kernphysik in Schleching | Florian Seck - TU Darmstadt | 8 / 24 Realistic dilepton emission rates 8-differential thermal production rate dileptons photons

February 23, 2016 | XLVII. Arbeitstreffen Kernphysik in Schleching | Florian Seck - TU Darmstadt | 9 / 24 Realistic dilepton emission rates The ρ meson in nuclear matter vacuum medium The  spectral function strongly broadens in the medium as the  meson couples to baryons ! D  (M,q;  B,T) = [M 2 - m  2 -   -   B -   M ] -1 additional contributions to the  meson self-energy in the medium Rapp, Wambach: Adv. Nucl. Phys. 25 (2000)

February 23, 2016 | XLVII. Arbeitstreffen Kernphysik in Schleching | Florian Seck - TU Darmstadt | 10 / 24 parameterization of Rapp-Wambach in-medium ρ spectral function Rapp, Wambach: Eur. Phys. J. A 6 (1999) reproduces excess for available experimental data well CERES NA60 STAR (including BES) PHENIX with HBD at higher masses: include hadronic continuum radiation Hohler, Rapp: Phys. Lett. B 731 (2014) Realistic dilepton emission rates Hadronic matter in-medium ρ & ω

February 23, 2016 | XLVII. Arbeitstreffen Kernphysik in Schleching | Florian Seck - TU Darmstadt | 11 / 24 Space-time evolution of a heavy-ion collision Au+Au at 1.23 AGeV ( = 2.4 GeV) HADES energy regime

February 23, 2016 | XLVII. Arbeitstreffen Kernphysik in Schleching | Florian Seck - TU Darmstadt | 12 / 24 Space-time evolution of a heavy-ion collision Au+Au at 11 AGeV ( = 4.9 GeV) CBM energy regime

February 23, 2016 | XLVII. Arbeitstreffen Kernphysik in Schleching | Florian Seck - TU Darmstadt | 13 / 24 divide space-time evolution into 4-dimesional cells 21 x 21 x 21 space cells (1fm 3 ), 30 time steps ~ 280 k cells determine for each cell the bulk properties like T, ρ B & v coll Description of the fireball evolution Coarse-graining of hadronic transport “combine” the advantages of both descriptions: hydrodynamics & transport simulate events with a transport model ensemble average to obtain smooth space-time distributions calculate dilepton rates based on these inputs sum up the contributions of all cells similar approaches by Huovinen et al.: Phys. Rev. C 66 (2002) Endres et al.: Phys. Rev. C 91 (2015) , Phys. Rev. C 92 (2015) l+l+ l -

February 23, 2016 | XLVII. Arbeitstreffen Kernphysik in Schleching | Florian Seck - TU Darmstadt | 14 / 24 Local thermalization? Momentum distributions of nucleons (N coll ≥ 3) & pion m t spectra Gaussian shaped p z distribution builds up for nucleons with N coll ≥ 3 m t spectra show exponential shape

February 23, 2016 | XLVII. Arbeitstreffen Kernphysik in Schleching | Florian Seck - TU Darmstadt | 15 / 24 baryon density via 4-current particles described by normalized 3D Gaussians perform Lorentz-boost into the local rest frame, where the baryon current vanishes (Eckart frame) Determination of bulk properties (Baryon) density & collective flow velocity

February 23, 2016 | XLVII. Arbeitstreffen Kernphysik in Schleching | Florian Seck - TU Darmstadt | 16 / 24 Determination of bulk properties Temperature subtract mean flow v coll of the cells from particle motion fill m t spectra & fit exponential function to extract T use different fit ranges / particle species to get the systematics in Boltzmann approximation integration over rapidity and azimuthal angle

February 23, 2016 | XLVII. Arbeitstreffen Kernphysik in Schleching | Florian Seck - TU Darmstadt | 17 / 24 no more inelastic interactions pion number conserved system in thermal equilibrium cools down further too many pions cured by build-up of an effective chemical potential μ π Out of chemical equilibrium ? Build-up of effective chemical potentials thermal emission rates assume chemical equilibrium chemical non-equilibrium possible, e.g. after chemical freeze-out pions determine the ρ self-energy include a factor into the dilepton rates with the fugacity exponent k reflects the main production mechanism of ρ mesons

February 23, 2016 | XLVII. Arbeitstreffen Kernphysik in Schleching | Florian Seck - TU Darmstadt | 18 / 24 Out of chemical equilibrium ? Derivation of the effective chemical potentials particle density in Boltzmann approximation carrying out the momentum integral yields solving for the chemical potential results in

February 23, 2016 | XLVII. Arbeitstreffen Kernphysik in Schleching | Florian Seck - TU Darmstadt | 19 / 24 Results Au+Au at 1.23 AGeV evolution of T, ρ eff and μ π in the central cube of 7x7x7 cells location of cells in the temperature-density plane

February 23, 2016 | XLVII. Arbeitstreffen Kernphysik in Schleching | Florian Seck - TU Darmstadt | 20 / 24 Results Au+Au at 1.23 AGeV trajectories of the cells in the temperature-density plane all cellsinner 3x3x3 cube

February 23, 2016 | XLVII. Arbeitstreffen Kernphysik in Schleching | Florian Seck - TU Darmstadt | 21 / 24 Results Interplay temperature – fireball volume

February 23, 2016 | XLVII. Arbeitstreffen Kernphysik in Schleching | Florian Seck - TU Darmstadt | 22 / 24 strong medium effects on ρ-meson remarkably structureless low-mass spectrum Results T. Galatyuk, P. M. Hohler, R. Rapp, F. Seck, J. Stroth arXiv: [nucl-th] active radiation window ~13 fm/c follows build-up of collective medium flow time evolution of cumulative dilepton yield in mass window M = GeV/c 2

February 23, 2016 | XLVII. Arbeitstreffen Kernphysik in Schleching | Florian Seck - TU Darmstadt | 23 / 24 inverse slope parameter: T S = 88 ± 5 MeV in IMR, T S = 64 ± 5 MeV in LMR Results T. Galatyuk, P. M. Hohler, R. Rapp, F. Seck, J. Stroth arXiv: [nucl-th] radiation stems from time interval with highest densities, different at higher energies

February 23, 2016 | XLVII. Arbeitstreffen Kernphysik in Schleching | Florian Seck - TU Darmstadt | 24 / 24 Summary & Outlook dileptons are excellent fireball probes thermometer & chronometer thermal dilepton spectra from highest to lowest energies realistic thermal dilepton emission rates accurate description of fireball evolution in terms of T, ρ eff, v coll and μ π coarse-graining of hadronic transport at SIS energies baseline for future explorations any significant deviation can indicate new physics!