Properties and dynamics of hot and compressed baryonic matter

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1 Properties and dynamics of hot and compressed baryonic matter Detailed experimental and theoretical results on formation and expansion dynamics of hot and compressed baryonic matter, information on the equation of state and signals of neutron rich matter populated in relativistic heavy ion collisions are presented. A brief presentation of a strategy for visible and recognized contributions within large scale international collaborations will argue the perspectives in this field for the Romanian community. Mihai Petrovici, September 13, 2005, Bucharest

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3 1st invited lecture at the NPC in 33 years of activity in NIPNE!

4 Field Overview & Contributions ALICE CBM FOPI CHIMERA Amalia Pop Ionela Berceanu DRACULA

5 A. Introduction Collective expansion in highly central collisions Multidimensional analysis of in-plane to out-of-plane transition of azimuthal distributions Azimuthal distribtions of <Ekin> and Ecoll EOS 3H - 3He, <Ekin> puzzle Is the neutron rich matter populated in relativistic heavy ion collisions? 3H - 3He squeeze-out signals B. Visible & Competitive contributions within Large Scale Collaborations Conclusions and Outlook

6 Particle identification IPW OPW CDC + PB IC

7 Reaction Plane y=1/2 ln[(e+pz)/ (E-pz)]

8 Collision Geometry

9 Reference System dn/dϕ=a0(1+ a1cos ϕ+a2cos2 ϕ)

10 Physics topics Peripheral collisions proposed and followed by our group Highly central collisions M. Petrovici, I. Legrand& FOPI Phys.Rev.Lett.25(1995)5001 A. Andronic, G. Stoicea, M. Petrovici & FOPI Nucl.Phys.A679(2001)765 G. Stoicea, M. Petrovici & FOPI Phys.Rev.Lett.92(2004)072303

11 FOPI Experimental Facts EOS INDRA: 129Xe + 119Sn 50 A MeV -0.5 cos(ϑcm) 0.5

12 Theoretical Predictions Au + Au 60 º ϑcm 90 º BUU 150 A MeV 250 A MeV <Ekin>[MeV] 100 A MeV RFM 250 A MeV AIMF

13 } M.Petrovici Heavy Ion Physics Workshop Poiana Brasov 1996 World Scientific, p.228

14 Where and which observables one should look? Where?

15 RFM predictions Au A MeV Adriana Raduta

16 Do we have a clock? M.Petrovici, Fizika 12B(2003)2,165

17 Let s look for the squeeze-out signal of 3 H & 3He fragments

18 PID - RuRu A MeV Z=1 p 3 He Z=2 Pt(0) Counts Z=1 Z=2 4 He d t Z AIMF AIMF

19 Collision geometry selection: CDC multiplicity-cmul, CM3 4fm<b<6fm CDC Reaction plane: { ER3 2fm<b<4fm ER4 0fm<b<2fm CDC Reference system: 3 a2= He a2=

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22 Isospin dependent hadronic transport model Nuclear mean field U(ρ,τ) = a(ρ/ρo) + b(ρ/ρo) σ + (1-τz)Vc + C(ρn- ρp)/ ρo τz U(ρ,τ) = a(ρ/ρo) + b(ρ/ρo) σ + Vasyq (ρ,δ) Vasyq (ρ,δ) = wa (ρ,δ) / ρq wa (ρ,δ) = ea ρ F(u) δ2 δ = (ρn- ρp)/ (ρn+ ρp) (q= n or p)

23 K=9ρ02 d2/d ρ2 (E/A)

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28 ALICE TRD

29 ALICE TRD

30 Nuclear Interactions and Hadronic Matter Centre of Excellence LOCATION DETLAB NIPNE

31 2 pairs of Glueing & Vacuum Ready for Tables polimerisation installed Filling the gap between TRD Frame glueing Radiator & Frame Valerica Aprodu Elena Ionescu Lucica Prodan Petre Zaharia Preparation for Radiator glueing Dispersing the glue between Frame and Radiator Radiator alignement on the frame profile Frame & Radiator Ready

32 Taping together Distributed two adjoining weigt on the planes Honeycomb Panel during polimerisation Pad Plane ready Final check of the after filling Honeycomb Panel cut outs Valerica Aprodu Elena Ionescu Lucica Prodan Honeycomb Panel Victor Simion above the Pad Plane s Pad Plane flatness check before lowering

33 Drilling the hole for the Drift HV cable MW Electrode on the Winding Machine Cristian Andrei Andrei Herghelegiu Alexandru Dobrin Drift HV Andrei Radu connection on the MW Electrode Radiator with the combs mounted The configuration Preparing the access for the Drift HV end point used for alignment & glueing the MW Electrodes Viorel Duta Gheorghe Giolu Gheorghe Mateescu

34 Gain uniformity test Energy resolution test σ 8.7% Constantin Magureanu Mariana Petris Daniel Bartos Ionela Berceanu Gheorghe Caragheorgheopol Amalia Pop

35 Towards a Tier 2 Centre Claudiu Schiaua Gabriel Stoicea Cristina Aiftimiei Duma Marin Cristian Andrei Amalia Pop Alexandra Petrovici Adriana Raduta Oana Radu Nov Present

36 NIHAM Vasile Catanescu Claudiu Schiaua

37 R&D Activities Mariana Petris σ=8.6% Dorin Moisa Gheorghe Caragheorgheopol σ=84ps Mariana Petris Dorin Moisa Mariana Petris Dorin Moisa Victor Simion Victor Simion Victor Simion Andrei Radu Andrei Radu Ilie Cruceru Andrei Radu σ=96ps (0.4±1.0)% HCR - TRD JRA4 (3.2±2.1)% CVD - DD JRA11 I3HP - FP6 HCR - RPC JRA12

38 FAIR TOF TRD CVD T0

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40 Mihai PETROVICI Cristina AIFTIMIEI Cristian ANDREI Valerica APRODU Daniel BARTOS Ionela BERCEANU Gheorghe CARAGHEORGHEOPOL VasileCATANESCU Mircea CIOBANU Ilie CRUCERU PetreDIMA Alexandru DOBRIN Marin DUMA Viorel DUTA Gheorghe GIOLU Andrei HERGHELEGIU Elena IONESCU Iosif LEGRAND Constantin MAGUREANU Gheorghe MATEESCU Dorin MOISA Mariana PETRIS Alexandrina PETROVICI Amalia POP Lucica PRODAN Andrei RADU Oana RADU Adriana RADUTA Claudiu SCHIAUA Victor SIMION Gabriel STOICEA Petre ZAHARIA NIHAM CEX

41 Conclusion: YES! Outlook: Lumea nu e a cui o strabate cu piciorul, ci a cui o intelege cu gandul Nicolae Iorga