June 17, 2003NN2003, Moscow, Jens Jørgen Gaardhøje, Niels Bohr Institute1 n100 AGeV + 100 AGeV Au+Au Ecm =  s  40 TeV THE LITTLE BIG BANG and search.

Slides:

Advertisements

Similar presentations

Results from BRAHMS experiment at RHIC Pawel Staszel Niels Bohr Institute for the BRAHMS Collaboration.

Advertisements

Dec 18, 2001Odense Uni., Jens Jørgen Gaardhøje, Niels Bohr Institute1 nFirst physics at RHIC with 65 AGeV + 65 AGeV and 100 AGeV AGeV Au+Au collisions:

Dec 6, 2001BH-symposium, Jens Jørgen Gaardhøje, Niels Bohr Institute1 nFirst physics at RHIC with 65 AGeV + 65 AGeV and 100 AGeV AGeV Au+Au collisions.

RHIC AGS Users Meeting 12 May BRAHMS Highlights Ramiro Debbe for the BRAHMS collaboration Physics Department.

High p T Suppression at Forward Rapidities Catalin Ristea Niels Bohr Institute, Copenhagen for the BRAHMS Collaboration XXXV International Symposium on.

June 17, 2003NN2003, Moscow, Jens Jørgen Gaardhøje, Niels Bohr Institute1 n100 AGeV AGeV Au+Au Ecm =  s  40 TeV THE LITTLE BIG BANG and search.

Sept 4, 2001Paris, Jens Jørgen Gaardhøje, Niels Bohr Institute1 nReaction features in 65 AGeV + 65 AGeV and 100 AGeV AGeV Au-AU collisions nEM dissociation.

Michael Murray1 Global Detectors Flavor Dynamics Michael Murray for BRAHMS C. Arsene 12, I. G. Bearden 7, D. Beavis 1, S. Bekele 12, C. Besliu 10, B. Budick.

Particle Production in p + p Reactions at GeV K. Hagel Cyclotron Institute Texas A & M University for the BRAHMS Collaboration.

Baryon-to-meson production in a wide range of baryo-chemical potential at RHIC Paweł Staszel, Marian Smoluchowski Institute of Physics Jagiellonian University.

Transverse and Longitudinal Dynamics at RHIC Paweł Staszel, Marian Smoluchowski Institute of Physics Jagiellonian University SQM 2007 Levo č a, 24–

Baryon-to-meson production in a wide range of baryo-chemical potential at RHIC Paweł Staszel, Marian Smoluchowski Institute of Physics Jagiellonian University.

1 Mar. 26 SQM2006 J.H. Lee (BNL) Recent Results from BRAHMS J.H. Lee Physics Department Brookhaven National Laboratory For the Collaboration March

Phases of matter in the BRAHMS experiment Paweł Staszel, Marian Smoluchowski Institute of Physics Jagiellonian University for the BRAHMS Collaboration.

Winter Workshop, Big Sky, February 121 Flemming Videbaek Physics Department, BNL What did we learn from 200 and 62 GeV pp collisions at RHIC ? A BRAHMS.

J.H. Lee BNL Correlations Fest, June 2002, BNL HBT in BRAHMS.

H. Ito University of Kansas For the BRAHMS Collaboration The BRAHMS Institutions 1 Brookhaven National Laboratory, Upton, NY 11973, U.S.A. 2 Institut de.

P + p at 200 GeV K. Hagel Cyclotron Institute, Texas A & M for the BRAHMS Collaboration The spectrometers Particle antiparticle ratios –  s dependence.

BRAHMS High p T Results from the BRAHMS Experiment Zhongbao Yin Department of Physics, University of Bergen for the BRAHMS Collaboration.

1 Nov. 15 QM2006 Shanghai J.H. Lee (BNL) Nuclear Induced Particle Suppression at Large-x F at RHIC J.H. Lee Physics Department Brookhaven National Laboratory.

BRAHMS 16. August 2004 ICHEP04 Beijing, Kina I.G.Bearden, Niels Bohr Institute 1 BRAHMS Particle Production at Forward Rapidities with BRAHMS I.G. Bearden,

Transverse dynamics at y=0 in BRAHMS Bjørn H. Samset Transverse dynamics at RHIC, March 2003 A story of centrality dependent pt spectra of identified charged.

Recent Results from the BRAHMS Experiment at RHIC Paweł Staszel, Jagellonian University for the BRAHMS Collaboration Eighth Workshop on Non-Perturbative.

1 April 21 DIS2006 J.H. Lee (BNL) SSA in BRAHMS J.H. Lee (BNL) for BRAHMS Collaboration DIS2006, Tsukuba, April 2006 Short Introduction Preliminary results.

20-26 Feb Lake Louise Eun-Joo Kim Parton energy loss, saturation, and recombination at BRAHMS Eun-Joo Kim University of Kansas For the BRAHMS collaboration.

BRAHMS 22. Oktober 2004 Forward Physics Workshop, KU I.G.Bearden, Niels Bohr Institute 1 BRAHMS Particle Production Studied with BRAHMS I.G. Bearden, Niels.

1 Physics at forward rapidities How well does pQCD work p+p at 200 and 62 GeV Probing the initial condition d+Au collisions at 200 GeV Final state effects.

G. Musulmanbekov, K. Gudima, D.Dryablov, V.Geger, E.Litvinenko, V.Voronyuk, M.Kapishin, A.Zinchenko, V.Vasendina Physics Priorities at NICA/MPD.

QM 2009, Knoxville1 Forward-Rapidity Azimuthal and Radial Flow of Identified Particles for = 200 GeV Au+Au and Cu+Cu Collisions S.J. Sanders (U. Kansas)

2nd International Workshop on the critical point and the onset of deconfinement Charged mesons in Au+Au interactions at 62.4 AGeV Ionut Arsene for the.

Rapidity Dependence of Charged Hadron Yields in Central Au+Au Collisions at 200 GeV Djamel Ouerdane Niels Bohr Institute for the BRAHMS Collaboration Quark.

BRAH Broad RAnge Hadron MS Magnetic Spectrometers 2.3° 30° 90° 30° The BRAHMS HI and Spin Programs S. J. Sanders U. Kansas.

Charged-particle pseudorapidity densities in d-Au collisions at  s=200GeV/A Hironori Ito Brookhaven National Laboratory BRAHMS Collaboration.

1 Jeffery T. Mitchell – Quark Matter /17/12 The RHIC Beam Energy Scan Program: Results from the PHENIX Experiment Jeffery T. Mitchell Brookhaven.

Results from the BRAHMS Experiment at RHIC F.Rami* for the BRAHMS Collaboration * Institut de Recherches Subatomiques and Université Louis Pasteur, Strasbourg.

Results from First RHIC run QM 2001 January 15, 2001 Results from First RHIC run QM 2001 January 15, 2001 F.Videbœk Physics Department Brookhaven National.

Strangeness production in Au+Au collisions at RHIC Jens Ivar Jørdre University of Bergen, Norway.

Strangeness Measurements in BRAHMS J.H. Lee Physics Department Brookhaven National Laboratory For the BRAHMS Collaboration SQM2003 Mar  Results.

1 Results from the BRAHMS experiment at RHIC Dieter Röhrich Fysisk institutt, Universitetet i Bergen for the BRAHMS collaboration Experimental setup Stopping.

1 Results from the BRAHMS experiment at RHIC Dieter Röhrich Fysisk institutt, Universitetet i Bergen for the BRAHMS collaboration Experimental setup Stopping.

Rapidity Dependence of Pion Elliptic Flow Hironori Ito 1 Erik Johnson 2 Steve Sanders 2 BRAHMS Collaboration 1 Brookhaven National Laboratory 2 University.

Recent Results from BRAHMS from y=0 to y=3 I. G. Bearden Niels Bohr Institute University of Copenhagen, Denmark Quark Matter 2002, July 18-24, Nantes,

HIGHLIGHTS BRAHMS I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 2 Outline BRAHMS Intermediate PT Soft physics.

BRAHMS Scanning the phases of QCD I. Arsene, I.G. Bearden, D. Beavis, C. Besliu, B. Budick, H. Bøggild, C. Chasman, C. H. Christensen, P. Christiansen,

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

Phases of matter in the BRAHMS experiment Paweł Staszel, Marian Smoluchowski Institute of Physics Jagiellonian University for the BRAHMS Collaboration.

Jaipur, India Feb title Recent Results from BRAHMS R. Debbe for the BRAHMS Collaboration Physics Dept. Brookhaven National Laboratory.

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

April 29, 2001APS-Wash-DC, Jens Jørgen Gaardhøje, Niels Bohr Institute1 nReaction features in 65 AGeV Au + 65AGeV Au nElectromagnetic dissociation ndN(ch)/d.

DNP2004 Oct Hyatt Regency Chicago IL Ramiro Debbe for the BRAHMS collaboration Physics Department Forward Identified Particle Production in d+Au.

Recent Results from BRAHMS at RHIC J.H. Lee Physics Department Brookhaven National Laboratory For the BRAHMS Collaboration Current and Future Directions.

Truls Martin Larsen, BRAHMS Collaboration, QM Aug 1 Nuclear Modification factors in Cu-Cu and Au-Au collisions Truls Martin Larsen.

Rapidity dependence of charged particle yields with BRAHMS for Au+Au at 200 GeV Djamel Ouerdane for the BRAHMS collaboration Quark Matter 2002 Nantes,

Zbigniew Majka M.Smoluchowski Institute of Physics, Jagiellonian University, Kraków, Poland Review of early results from BRAHMS experiment.

Kaon Production in Central Au+Au Collisions at 200 and 63 GeV Djamel Ouerdane Niels Bohr Institute for the BRAHMS Collaboration Strange Quark Matter 2004.

BRAHMS Heavy Ion Results and Perspectives Erik Bjorn Johnson RHIC & AGS Users Meeting June 8, 2006.

Eun-Joo Kim ( Chonbuk Nat. Univ.) Hongyan Yang ( Univ. of Bergen ) For the Collaboration N MF Nuclear Modification Factors at BRAHMS.

BRAHMS 18. JUNI 2003 BNL High Pt Colloquium I.G.Bearden, Niels Bohr Institute 1 BRAHMS High P T Measurements with BRAHMS I.G. Bearden, Niels Bohr Institute.

8 th February 2002Michael Murray, Texas A&M, CMS Heavy Ion Mtg at MIT Brahms: Forward Physics at RHIC T1 MTPC1 T2 MTPC2 MRS: 90 deg 6.5 msr FS: 6 deg 0.8.

HAW Sep Maui, Hawaii Ramiro Debbe BNL Physics Department The excess of positive charged particles measured at forward rapidities in d+Au.

BRAHMS Zhongbao Yin Department of Physics, University of Bergen for the BRAHMS Collaboration High p T Spectra of Protons and Charged Pions in Au+Au and.

Baryon-to-meson production in a wide range of baryo-chemical potential at RHIC Paweł Staszel, Marian Smoluchowski Institute of Physics Jagiellonian University.

BRAHMS Y RHIC: snn=130 GeV, and snn=200 GeV

Radoslaw Karabowicz for the BRAHMS Collaboration

Eun-Joo Kim University of Kansas For the BRAHMS collaboration

Soft Physics at Forward Rapidity

Identified hadron production in d+Au and p+p collisions at RHIC

Recent Results from the BRAHMS

BRAHMS overview Paweł Staszel,

Forward Physics with BRAHMS at RHIC University of Bergen & CERN

Presentation transcript:

June 17, 2003NN2003, Moscow, Jens Jørgen Gaardhøje, Niels Bohr Institute1 n100 AGeV AGeV Au+Au Ecm =  s  40 TeV THE LITTLE BIG BANG and search for Quark Gluon Plasma. n  5000 charged hadrons produced per central Au + Au collision. nNuclear Transparency, Bjorken boost invariant plateau? nTowards nuclear ’stuff’ with matter-antimatter balance nEquilibrated matter ? nHigh pt suppression, the smoking gun of QGP? BRAHMS at RHIC Au+Au,  s nn =200 GeV

June 17, 2003NN2003, Moscow, Jens Jørgen Gaardhøje, Niels Bohr Institute2 NIM, A499 (2003) 437

June 17, 2003NN2003, Moscow, Jens Jørgen Gaardhøje, Niels Bohr Institute3 BRAHMS: The forward experiment FS: TPC, TOF, Cherenkov deg.  = MRS: TPC, TOF deg.  = Global: |  | < 5

June 17, 2003NN2003, Moscow, Jens Jørgen Gaardhøje, Niels Bohr Institute4 I.G. Bearden 7, D. Beavis 1, C. Besliu 10, Y. Blyakhman 6, J. Bondorf 7, J.Brzychczyk 4, B. Budick 6, H. Bøggild 7, C. Chasman 1, C. H. Christensen 7, P. Christiansen 7, J.Cibor 4, R.Debbe 1, J. J. Gaardhøje 7, M. Germinario 7, K. Grotowski 4, K. Hagel 8, O. Hansen 7, H. Heiselberg 7, A. Holm 7, A.K. Holme 12, H. Ito 11, E. Jacobsen 7, A. Jipa 10, J. I. Jordre 10, F. Jundt 2, C. E. Jørgensen 7, T. Keutgen 9, E. J. Kim 5, T. Kozik 3, T.M.Larsen 12, J. H. Lee 1, Y. K.Lee 5, G. Løvhøjden 2, Z. Majka 3, A. Makeev 8, B. McBreen 1, M. Murray 8, J. Natowitz 8, B.S.Nielsen 7, K. Olchanski 1, D. Ouerdane 7, R.Planeta 4, F. Rami 2, D. Roehrich 9, B. H. Samset 12, S. J. Sanders 11, D. Sandberg 7,I. S. Sgura 10, R.A.Sheetz 1, Z.Sosin 3, P. Staszel 7, T.S. Tveter 12, F.Videbæk 1, R. Wada 8 and A.Wieloch 3. 1 Brookhaven National Laboratory, USA 2 IReS and Université Louis Pasteur, Strasbourg, France 3 Jagiellonian University, Cracow, Poland 4 Institute of Nuclear Physics, Cracow, Poland 5 Johns Hopkins University, Baltimore, USA 6 New York University, USA 7 Niels Bohr Institute, Blegdamsvej 17, University of Copenhagen, Denmark 8 Texas A&M University, College Station. USA 9 University of Bergen, Norway 10 University of Bucharest, Romania 11 University of Kansas, Lawrence,USA 12 University of Oslo Norway BRAHMS Intl. collaboration

June 17, 2003NN2003, Moscow, Jens Jørgen Gaardhøje, Niels Bohr Institute5 Excellent Hadron ID by TOF and RICH m 2 =p 2 ( t 2 / L 2 -1) D p  K DD

June 17, 2003NN2003, Moscow, Jens Jørgen Gaardhøje, Niels Bohr Institute6 BRAHMS acceptance Many fields and angles …

June 17, 2003NN2003, Moscow, Jens Jørgen Gaardhøje, Niels Bohr Institute7 Hadron spectra vs. Pt, rapidity and centrality a sample of Djamels spectra vs y f. eks pions.

June 17, 2003NN2003, Moscow, Jens Jørgen Gaardhøje, Niels Bohr Institute8 Stopping, transparency, & boost invariance y dN/dy 0y 0 y 0

June 17, 2003NN2003, Moscow, Jens Jørgen Gaardhøje, Niels Bohr Institute9 Stopping or transparency at RHIC ?

June 17, 2003NN2003, Moscow, Jens Jørgen Gaardhøje, Niels Bohr Institute10 Net Proton yield for Au+Au at  s nn =200 GeV Net protons = N(p)-N(anti-p) A measure of the baryon transport Central (Bjorken) Plateau ? Observed protons: only part of the story. Corrections needed for other hadrons (n, , , etc…)

June 17, 2003NN2003, Moscow, Jens Jørgen Gaardhøje, Niels Bohr Institute11 Transparency at RHIC Relative rapidity loss : 32% <  y < 48% Transparency but still a large transfer of kinetic energy to excitations (of the color field) Peter Christiansen Ph. D. thesis, NBI, June 2003

June 17, 2003NN2003, Moscow, Jens Jørgen Gaardhøje, Niels Bohr Institute12 Do models describe reaction mechanism at RHIC? Hijing: (Partonic, Strings, no rescattering) UrQMD: Hadronic, Transport calc, resonance excita. rescattering Data corrected for p feed down from hyperons

June 17, 2003NN2003, Moscow, Jens Jørgen Gaardhøje, Niels Bohr Institute13 Antiparticle/particle 200AgeV ’+’  ’-’ p - /p = p - (pair) / [p+p(pair)] K - /K + = K - (pair) / [K + (pair)+K + (dir)] (p+p  p+  +K + )  +  - pair prod (& ch. exch). Midrapidity: near matter-antimatter balance ++ Boost Invariant Plateau ?! BRAHMS130 PRL 87 (2001) BRAHMS200 PRL 90 (2003)

June 17, 2003NN2003, Moscow, Jens Jørgen Gaardhøje, Niels Bohr Institute14 Quark chemistry Chemical equilibrium? nGrand Canonical Ensemble with Strangeness and charge conservation  (p - )/  (p + )= exp(-6  u,d /T)  (K - )/  (K + )= exp(-2[  u,d -  s ]/T) = exp(2  s /T) [  (p - )/  (p + )] 1/3 nUniversal relationship between  u,d &  s nChemical equilibration for different rapidity slices? BRAHMS200 PRL 90 (2003)

June 17, 2003NN2003, Moscow, Jens Jørgen Gaardhøje, Niels Bohr Institute15 Phase diagram of nuclear matter Lowest baryo- chemical potential yet measured in NN collisions HG

June 17, 2003NN2003, Moscow, Jens Jørgen Gaardhøje, Niels Bohr Institute16 Charged particle 200 AGeV n4630 charged particles produced for 0-5% central n14% increase over 130GeV n50% increase over p +  p (UA5) => significant medium effects Brahms 200 pppp

June 17, 2003NN2003, Moscow, Jens Jørgen Gaardhøje, Niels Bohr Institute17 Saturation of excitations in fragmentation region Shift data to beam frame of reference BRAHMS PRL 88 (2002)

June 17, 2003NN2003, Moscow, Jens Jørgen Gaardhøje, Niels Bohr Institute18 Multiplicity,, B2(V)  energy density Bjorken energy density  = (1/  R 2  0 ) dE t /d  dE t =dN  5 GeV/fm 3 cf:  QGP critical  1 GeV/fm 3

June 17, 2003NN2003, Moscow, Jens Jørgen Gaardhøje, Niels Bohr Institute19 4  yields of charged mesons.

June 17, 2003NN2003, Moscow, Jens Jørgen Gaardhøje, Niels Bohr Institute20 Strangeness Production vs. CM energy K + /   =(u  s) / (u  d) K - /  - =(  u s) /(  u d) p + p  p +  + K +

June 17, 2003NN2003, Moscow, Jens Jørgen Gaardhøje, Niels Bohr Institute21 Universal correlation of Charged kaon vs pion? Djamel Ouerdane, Ph. D. thesis, NBI, NPA715 (2003) 478

June 17, 2003NN2003, Moscow, Jens Jørgen Gaardhøje, Niels Bohr Institute22 High pt suppression & Jet quenching at RHIC? q q q q SPS (  s nn =17 GeV) High p_t enhancement when compared to p+p scaled by N_binary: flow and quark mult scattering

June 17, 2003NN2003, Moscow, Jens Jørgen Gaardhøje, Niels Bohr Institute23 Jet Quenching? High pt yield suppression.

June 17, 2003NN2003, Moscow, Jens Jørgen Gaardhøje, Niels Bohr Institute24 Jet quenching Does it persist at fwd. rapidity? Analysis by Claus E. Jørgensen, NBI (QM2002: NPA) See parrallel session talk this afternoon y=2.2 BRAHMS preliminary

June 17, 2003NN2003, Moscow, Jens Jørgen Gaardhøje, Niels Bohr Institute25 Absence of high pt suppression for d+Au ! q q Au D D+Au,  s nn =200GeV BRAHMS preliminary y=0 See Claus Jørgensen’s talk!

June 17, 2003NN2003, Moscow, Jens Jørgen Gaardhøje, Niels Bohr Institute26 Summary and conclusions Central region near baryon-free. Evidence for boost invariant and central plateau (|y|<2) Near matter-antimatter balance Largest energy density yet seen Consistency with thermal models over |y|=2 High pt suppression, seen at y=0,2, not seen in d+Au (y=0)