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HIGHLIGHTS BRAHMS
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 2 Outline BRAHMS Intermediate PT Soft physics
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 3 BRAHMS Collaboration I. C. Arsene 12, I. G. Bearden 7, D. Beavis 1, S. Bekele 12, C. Besliu 10, B. Budick 6, H. B ø ggild 7, C. Chasman 1, C. H. Christensen 7, P. Christiansen 7, H.Dahlsgaard 7, R. Debbe 1, J. J. Gaardh ø je 7, K. Hagel 8, H. Ito 1, A. Jipa 10, E.B.Johnson 11, J. I. J ø rdre 9, C. E. J ø rgensen 7, R. Karabowicz 5, N. Katrynska 5, E. J. Kim 11, T. M. Larsen 7, J. H. Lee 1, Y. K. Lee 4,S. Lindahl 12, G. L ø vh ø iden 12, Z. Majka 5, M. J. Murray 11,J. Natowitz 8, C.Nygaard 7 B. S. Nielsen 7, D. Ouerdane 7, D.Pal 12, F. Rami 3, C. Ristea 8, O. Ristea 11, D. R ö hrich 9, B. H. Samset 12, S. J. Sanders 11, R. A. Scheetz 1, P. Staszel 5, T. S. Tveter 12, F. Videb æ k 1, R. Wada 8, H. Yang 9, Z. Yin 9, I. S. Zgura 2 1. Brookhaven National Laboratory, Upton, New York, USA 2. Institute of Space Science, Bucharest - Magurele, Romania 3. Institut Pluridisciplinaire Hubert Curien et Universit é Louis Pasteur, Strasbourg, France 4. Johns Hopkins University, Baltimore, USA 5. M. Smoluchkowski Institute of Physics, Jagiellonian University, Krakow, Poland 6. New York University, New York, USA 7. Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark 8. Texas A&M University, College Station, Texas, USA 9. University of Bergen, Department of Physics and Technology, Bergen, Norway 10. University of Bucharest, Romania 11. University of Kansas, Lawrence, Kansas, USA 12. University of Oslo, Department of Physics, Oslo, Norway
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 4 Broad RAnge Hadronic Magnetic SpectrometerS
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 5 Acceptance for charged hadrons
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 6 Pushing to forward y What changes? –dN/dy –pbar/p –Chemistry –V 2 (integral) –Initial state? (d+Au) What doesn’t? –Suppression (A+A) –V 2 (pt) –B 2
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 7 Intermediate (2-6GeV)P t h+,h- from eta=0 to 3.5 Identified particles to y p ≈3.1-3.5 (depending on system) Au+Au (200GeV, 62GeV) Cu+Cu (200,62), p+p (200, 62)
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 8 200 GeV Au+Au (Run IV) 10% 40-60% p+p
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 9 spectra as f(pseudo rapidity)
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 10 Identified particle RAA, 200GeV Au+Au y=0 y=1 y=3.1 pions kaons protons
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 11 Identified particle RAA, 200GeV Au+Au See Poster by Catalin Ristea
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 12 Cu+Cu 62 GeV charged hadrons
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 13 p+p 62GeV Reference for R AA Kinematic limit
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 14 R AA 62 GeV midrapidity top, Cu+Cu; bottom Au+Au
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 15 R AA Cu+Cu,Au+Au 62 GeV, =3.1
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 16 R AA Cu+Cu,Au+Au 62 GeV, =3.1 See talk(||1.1) by Truls Larsen
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 17 RdAu vs eta
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 18 RdAu vs eta See talk(||1.1) by Hongyan Yang
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 19 Other BRAHMS contributions J.H.Lee talk on suppression vs. x F –Parallel session 1.1 Wednesday S. Bekele poster 200GeV Cu+Cu @ forward rapidity
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 20 V 2 Identified particles 200GeV Au+Au =0 ≈3 K p
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 21 V 2 Identified particles 200GeV Au+Au See talk(||3.4) by Steve Sanders
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 22 Coalescence: p+n d Characterize source via B 2 Assume B 2 ≈V -1 Details: C. Nygaard (||3.4 Sun.)
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 23 What can we say about size vs. Rapidity?
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 24 What can we say about size vs. Rapidity? See talk(||3.4) by Casper Nygaard
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 25 Stopping: where are the baryons?
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 26 Stopping 62 GeV Au+Au
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 27 K/p vs. y 62 GeV Au+Au
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 28 K/p vs. y 62 GeV Au+Au See Poster by Ionut Arsene
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 29 How about vs. pbar/p?
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 30 Stopping: systematic
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 31 LHC? “net”proton AGS SPS RHIC 62 RHIC 200 LHC 5500 dN/dy (BRAHMS preliminary)
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 32 LHC? “net”proton AGS SPS RHIC 62 RHIC 200 LHC 5500 dN/dy (BRAHMS preliminary) “net”proton AGS SPS RHIC 62 RHIC 200 LHC 5500 dN/dy (BRAHMS preliminary) See Poster by Hans Dahlsgaard
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 33 Summary What changes? –dN/dy –pbar/p –Chemistry –V 2 (integral) –Initial state? (d+Au) What doesn’t? –Suppression (A+A) –V 2 (pt) –B 2
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 34 Backup Slides
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 35 Inverse slope vs pbar/p
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 36 TIME-OF-FLIGHT RICH: Cherenkov light focused on spherical mirror ring on image plane Ring radius vs momentum gives PID / K separation 20 GeV/c Proton ID up to 35 GeV/c CHERENKOV (2 settings) Particle Identificati on
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14.11.06I.G. Bearden, Niels Bohr Institute QM'06 Shanghai 37 K p BRAHMS Acceptance:
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