European Science FoundationExploratory Workshop
How to Constrain the High Density Symmetry Energy
HiDeSymEHiDeSymEnene
European Science FoundationExploratory Workshop
How to Constrain the High Density Symmetry Energy
HiDeSymEHiDeSymEnene
Zoran Basrak
September 1, 2010, Egelsbach, Germany
Z. Basrak, convenor
Strategic WorkshopStrategic Workshop European Science Foundation Standing Committee for Physical and Engineering Sciences
Laboratory for Nuclear PhysicsLaboratory for Nuclear Physics Division of Experimental Physics Division of Experimental Physics
RRuđeruđer Bošković Bošković Institute, Zagreb, CroatiaInstitute, Zagreb, Croatia
1950 – 2010
ESF EW HiDeSymEne
https://www.irb.hr/users/mkis/
Participants by country
Poland15%
Romania4%
Sweden4%
UK4%
Italy23%
Germany15%
France12%
Croatia15%
USA8%
0 1 2 3 4
Number of participants
21-2526-3031-3536-4041-4546-5051-5556-6061-6566-70
Ra
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Participants by age
Nucleosynthesis
Nuclear Equation of state (EoS)
p
V
T
pV = nRT
SOFT
HARD
E (,I) = E (,0) + Esym()I2 + o (I4) + ...
I = (n − p) /
Esym() ≈ E()neutr. matter - E()sym. nucl. matter
Symmetry energy
• The density dependence of symmetry energy is largely unconstrainedlargely unconstrained.
• What is “stiff” or “soft”“stiff” or “soft” (curvature) is density dependent
The asymmetry term contributes a greater uncertainty than does the
symmetric matter EOS.(Bao-An Li)
Z. Xiao et al., PRL 102 (2009) 062502
Neutron star
p / n ≤ 0.1 – 0.2
c ≤ (2-15)0
J. M
. Lat
timer
and
M. P
raka
sh, P
hys.
Rep
. 442
(20
07)
109
J. M
. Lat
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M. P
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479
1. n-p squeeze-out data from Au+Au collisions at E = 400A MeV [Y. Leifels et al., PRL 71 (1993) 963] → the UrQMD code predicts a steady rise of Esteady rise of Esym sym
→ γ=0.60.3 [W. Trautmann et al., ProgPartNuPh (2009)].
1. n-p squeeze-out data from Au+Au collisions at E = 400A MeV [Y. Leifels et al., PRL 71 (1993) 963] → the UrQMD code predicts a steady rise of Esteady rise of Esym sym
→ γ=0.60.3 [W. Trautmann et al., ProgPartNuPh (2009)].
2. π-/π+ yield ratio data for Au+Au collisions in a broad energy range [Reisdorf et al., NP A781 (2007) 459] → the IBUU04 code predicts a vanishing Evanishing Esymsym → γ=0.960.21, super soft asyEOSsuper soft asyEOS [Z. Xiao et al., PRL 102 (2009) 062502].
Supra-saturation densitiesThe only available data (FOPI and FOPI–LAND collaborations @ GSI) result in a contradictory predictions for Esym:
(Courtesy of M.B. Tsang) Z.Q. Feng, G.M. Jin, PL B683 (2010) 140
HiDeSymEneHiDeSymEne
Follow-up activitiesFollow-up activities
HiDeSymEneHiDeSymEne
Follow-up activitiesFollow-up activities
European Science FoundationResearch Networking Programmes
Constraining the Symmetry Energy
CoSymECoSymE
European Science FoundationResearch Networking Programmes
Constraining the Symmetry Energy
CoSymECoSymE Z. Basrak, M. Colonna and W. Trautmann
How ?
GDR & PYGNY RESONANCE
Creation of discussion fora:
What for ?
- new intensive RIB facilities - train up a new generation of scientists to take over leadership
Open character
Exchange of students & experts Facilitate a global dimension (complementarities) Timely initiative Prepare future
- theoreticians – experimentalists - nuclear physics – astrophysics
Who ?
1 Croatia
2 France
3 Germany
4 Italy
5 Poland
6 Romania
7 Spain
8 Sweden
9 United Kingdom
European Science Foundation 30 member states
Who ? 1 Croatia
Department of Physics, University of Split, Split
Department of Physics, University of Zagreb, Zagreb
Ruđer Bošković Institute, Division of eperimental physics, Zagreb
2 France
GANIL, CEA/DSM-CNRS/IN2P3, Caen
LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, Caen
Subatech, EMN-IN2P3/CNRS-Université de Nantes, Nantes
Institut de Physique Nucléaire, IN2P3-CNRS, Orsay
3 Germany
GSI Helmholtzzentrum fur Schwerionenforschung GmbH, Darmstadt
FIAS, Universitat Frankfurt, Frankfurt am Main
Institute for Theoretical Physics, University of Giessen, Giessen
Institute for Theoretical Physics/Astrophysics, University of Heidelberg, Heidelberg
4 Italy
Dipartimento di Fisica, University of Catania, Catania
CSFNSM, Catania
INFN – Sezione di Catania, Catania
INFN-LNS, Catania
Kore University, Enna
INFN – Sezione di Milano and Dipartimento di Fisica, Milano
INFN – Sezione Napoli and Dipartimento di Fisica, Napoli
5 Poland
Institute of Physics, University of Silesia, Katowice
Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, Krakow
IFJ-PAN, Krakow
A. Soltan Institute for Nuclear Studies, Swierk/Warsaw
Institute of Experimental Physics, Warsaw University, Warsaw
Institute for Theoretical Physics, University of Wroclaw, Wroclaw
6 RomaniaNIPNE, Bucharest
University of Bucharest and IFIN-HH, Bucharest
7 Spain University of Santiago de Compostela, Santiago de Compostela
8 Sweden
Department of Fundamental Physics, Chalmers University, Göteborg
Faculty of Science, Lund University, Lund
School of Technology, Malmo University, Malmo
9United Kingdom
STFC Daresbury Laboratory, Warrington, Cheshire
University of Liverpool, Liverpool
CoSymE proposal assessment
Presentations at meetings
Lobbying for CoSymE
SIS18 ASY-EOS experiment S394Experiment approved by GSI-PAC
ASY-EOS CollaborationZagreb, CroatiaCaen, Orsay, FranceDarmstadt, Frankfurt, GermanyIoannina, GreeceCatania, Milano, Napoli, ItalyKatowice, Krakow, Warsaw, PolandBucharest, RomaniaSantiago de Compostela, SpainLund, Malmo, SwedenDaresbury, Liverpool, United Kingdom
Kolkata, IndiaNSCL-MSU, Rochester, USA
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European Science FoundationExploratory Workshop
How to Constrain the High Density Symmetry Energy
HiDeSymEHiDeSymEnene
European Science FoundationExploratory Workshop
How to Constrain the High Density Symmetry Energy
HiDeSymEHiDeSymEnene
Zoran Basrak
September 1, 2010, Egelsbach, Germany
Z. Basrak, convenor
Strategic WorkshopStrategic Workshop European Science Foundation Standing Committee for Physical and Engineering Sciences
Laboratory for Nuclear PhysicsLaboratory for Nuclear Physics Division of Experimental Physics Division of Experimental Physics
RRuđeruđer Bošković Bošković Institute, Zagreb, CroatiaInstitute, Zagreb, Croatia
1950 – 2010
Thank you Thank you for your for your attentionattention
Thank you Thank you for your for your attentionattention