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5 results on '"L. P. Remsberg"'

1. Elliptic flow in Au+Au collisions at RHIC

Author

Carla M Vale, B B Back, M D Baker, M Ballintijn, D S Barton, R R Betts, A A Bickley, R Bindel, A Budzanowski, W Busza, A Carroll, M P Decowski, E García, N George, K Gulbrandsen, S Gushue, C Halliwell, J Hamblen, G A Heintzelman, C Henderson, D J Hofman, R S Hollis, R Hołyński, B Holzman, A Iordanova, E Johnson, J L Kane, J Katzy, N Khan, W Kucewicz, P Kulinich, C M Kuo, W T Lin, S Manly, D McLeod, A C Mignerey, M Ngyuen, R Nouicer, A Olszewski, R Pak, I C Park, H Pernegger, C Reed, L P Remsberg, M Reuter, C Roland, G Roland, L Rosenberg, J Sagerer, P Sarin, P Sawicki, W Skulski, P Steinberg, G S F Stephans, A Sukhanov, J-L Tang, M B Tonjes, A Trzupek, G J van Nieuwenhuizen, R Verdier, G Veres, F L H Wolfs, B Wosiek, K Woźniak, A H Wuosmaa, and B Wysłouch

Subjects
Physics, Nuclear and High Energy Physics, Range (particle radiation), 010308 nuclear & particles physics, Detector, Elliptic flow, FOS: Physical sciences, 01 natural sciences, 7. Clean energy, Charged particle, Nuclear physics, Azimuth, Pseudorapidity, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex), Nuclear Experiment, 010306 general physics, Anisotropy, Relativistic Heavy Ion Collider
Abstract

Elliptic flow is an interesting probe of the dynamical evolution of the dense system formed in the ultrarelativistic heavy ion collisions at the Relativistic Heavy Ion Collider (RHIC). The elliptic flow dependences on transverse momentum, centrality, and pseudorapidity were measured using data collected by the PHOBOS detector, which offers a unique opportunity to study the azimuthal anisotropies of charged particles over a wide range of pseudorapidity. These measurements are presented, together with an overview of the analysis methods and a discussion of the results., Comment: Presented at Hot Quarks 2004; 7 pages, 6 figures

Published
2005

2. Charged particle multiplicity fluctuations in Au+Au collisions at

Author

Krzysztof Wozniak, Barbara Wosiek, A. Sukhanov, P. Sarin, Wit Busza, R. Pak, Alice Mignerey, N. George, Peter Steinberg, R. Bindel, W. Skulski, Burt Holzman, R. S. Hollis, E. Johnson, P. Sawicki, Gunther Roland, Z. Chai, Russell Richard Betts, R. Holynski, B. B. Back, Conor Henderson, Inkyu Park, D. McLeod, J. Sagerer, George Stephans, Bolek Wyslouch, Jaw-Luen Tang, Christof Roland, A. H. Wuosmaa, D. S. Barton, C. Reed, M. P. Decowski, F. L. H. Wolfs, W. Kucewicz, A. A. Bickley, Chia-Ming Kuo, L. P. Remsberg, J. L. Kane, L.J. Rosenberg, M. Reuter, David Jonathan Hofman, G. Van Nieuwenhuizen, S. Manly, Rachid Nouicer, Adam Trzupek, M. Ballintijn, M. D. Baker, K. Gulbrandsen, W. T. Lin, J. Hamblen, C. Vale, Heinz Pernegger, A. S. Carroll, Andrzej Olszewski, R. Verdier, A. Iordanova, E. García, C. Halliwell, N. Khan, S. Gushue, J. Katzy, A. Budzanowski, G. A. Heintzelman, and P. Kulinich

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Range (particle radiation), Particle number, Pseudorapidity, Multiplicity (mathematics), Nuclear Experiment, Collision, Charged particle
Abstract

This paper presents the first PHOBOS results on charged particle multiplicity fluctuations measured for Au+Au collisions at the highest RHIC energy within a wide pseudorapidity range of |η| < 3. The dependence on collision geometry is removed in the analysis by using the normalized difference between the number of particles in separate η bins. We compare our data to HIJING model predictions.

Published
2004

3. Strange hadron production at low transverse momenta

Author

A. S. Carroll, R. Verdier, A. S. Harrington, P. Kulinich, Chia-Ming Kuo, C. Halliwell, Inkyu Park, Marguerite Tonjes, A. H. Wuosmaa, B.F. Wadsworth, B. B. Back, Barbara Wosiek, Bolek Wyslouch, Gunther Roland, A. Noell, Christof Roland, M. Ballintijn, A. Iordanova, R. Teng, Andrzej Olszewski, J. Hamblen, C. Reed, C. E. Smith, Alice Mignerey, A. Budzanowski, P. Sarin, R. Bindel, Rachid Nouicer, Adam Trzupek, J. L. Kane, S. Manly, M. P. Decowski, L. P. Remsberg, Bruce Becker, F. L. H. Wolfs, K. Gulbrandsen, R. S. Hollis, David Jonathan Hofman, E. García, N. Khan, J. Sagerer, R. Holynski, Russell Richard Betts, Conor Henderson, M. D. Baker, T. Gburek, S. Gushue, C. Vale, Heinz Pernegger, Gabor Istvan Veres, Peter Steinberg, R. Pak, E. Johnson, W. T. Lin, D. S. Barton, A. A. Bickley, I. Sedykh, A. Sukhanov, G. Van Nieuwenhuizen, J.W. Lee, Wit Busza, N. George, W. Skulski, Burt Holzman, Jian Zhang, George Stephans, Krzysztof Woźniak, and P. Sawicki

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Nuclear Theory, Hadron, Strangeness production, Strangeness, Collision, Ion, Nuclear physics, Baryon, Transverse plane, Nuclear Experiment, Nucleon
Abstract

Some of the latest results of the PHOBOS experiment from the √s NN = 200 GeV Au+Au data are discussed. Those relevant to strangeness production are emphasized. These observations relate to the nature of the matter created when heavy ions collide at the highest achieved energy. The invariant yields of strange and non-strange charged hadrons at very low transverse momentum have been measured, and used to differentiate between different dynamical scenarios. In the intermediate transverse momentum range, the measured ratios of strange and anti-strange kaons approach one, while the antibaryon to baryon ratio is still significantly less, independent of collision centrality and transverse momentum. At high transverse momenta, we find that central and peripheral Au+Au collisions produce similar numbers of charged hadrons per participant nucleon pair, rather than per binary nucleon-nucleon collision.

Published
2003

4. Overview of results from PHOBOS experiment at RHIC

Author

Andrzej Olszewski, Rachid Nouicer, Adam Trzupek, Barbara Wosiek, J. Michałowski, A. Budzanowski, F. L. H. Wolfs, C. Reed, C. Halliwell, Alice Mignerey, R. S. Hollis, N. Khan, Chia-Ming Kuo, George Stephans, B. Wadsworth, R. Bindel, D. S. Barton, K. Woźniak, D. Hicks, M. Reuter, M. D. Baker, M. Rafelski, P. Sawicki, K. Gulbrandsen, J. Hamblen, S. G. Steadman, R. Teng, W. Kucewicz, A. S. Carroll, W. T. Lin, M. Stodulski, R. Verdier, Russell Richard Betts, Conor Henderson, David Jonathan Hofman, M. P. Decowski, J. Katzy, J. Sagerer, Johannes Mülmenstädt, A. H. Wuosmaa, D. McLeod, Jaw-Luen Tang, A. Iordanova, J. L. Kane, C. Vale, Heinz Pernegger, M. Rbeiz, R. Pak, G. Van Nieuwenhuizen, Peter Steinberg, P. Kulinich, S. Manly, R. Holynski, J. Corbo, E. Johnson, Wit Busza, Gunther Roland, N. George, B. B. Back, W. Skulski, Burt Holzman, P. Sarin, Inkyu Park, E. Garcia, L. P. Remsberg, A. Sukhanov, Christof Roland, Bolek Wyslouch, L.J. Rosenberg, A. Oiszewski, and S. Gushue

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Pion, Elliptic flow, Particle, Particle flow, Nuclear Experiment, Nucleon, Collision, Charged particle, Ion
Abstract

An overview of results for interactions of Au+Au ions at centre-of-mass energies of √sNN = 56, 130 and 200 GeV obtained by the PHOBOS collaboration at RHIC is given. Measurements of primary charged particle density near mid-rapidity indicate that particle production grows logarithmically with collision energy and faster than linearly with the number of interacting nucleons. Elliptic flow is found to be much stronger at RHIC than at SPS energy. The effect is strongest in peripheral events and decreases for more central collisions and emission angles |η| > 1. The measured anti-particle to particle ratios of production rates for pions, kaons and protons in central Au+Au interactions at √sNN = 130 GeV are compatible with the statistical model of particle production, showing an increasingly baryon-free region in mid-rapidity with the increase of collision energy.

Published
2002

5. How strange is PHOBOS? First RHIC physics results and future prospects

Author

L. P. Remsberg, S. G. Steadman, G. Van Nieuwenhuizen, M. Plesko, P. Sawicki, R. Verdier, Alice Mignerey, M. Strek, C. Halliwell, Christof Roland, F. L. H. Wolfs, R. Bindel, A. Białas, R. S. Hollis, J. Michałowski, W. T. Lin, A. E. Chen, J. Kotuła, J. Ligocki, P. Kulinich, Andrzej Olszewski, J. Ryan, A. Budzanowski, B.F. Wadsworth, A. Straczek, M. Despet, A. Sukhanov, C. Gomes, M. P. Decowski, D. Ross, R. Ganz, A. B. Hayes, Bolek Wyslouch, D. McLeod, E. Griesmayer, Jan Godlewski, H. Kraner, A. S. Carroll, Yuan-Hann Chang, D. S. Barton, M. Patel, J. Halik, Burt Holzman, P. Fita, C. Conner, Z. Stopa, K. Gulbrandsen, Barbara Wosiek, J. Fitch, A. Sanzgiri, C. Law, N. George, W. Skulski, A. H. Wuosmaa, B. B. Back, R. Baum, J. Scaduto, J. Katzy, P. Haridas, M. Neal, R. Holynski, K. Surowiecka, George Stephans, M. Ceglia, M. Friedl, Gunther Roland, B. D. Bates, K. Zalewski, L J Rosenberg, J. L. Kane, W. Czyz, R. Pak, S. Manly, Marek Stodulski, M. Reuter, Peter Steinberg, G. S. F. Stephans, Johannes Mülmenstädt, M. D. Baker, E. Johnson, P. Sarin, Jaw-Luen Tang, C. Reed, Bogdan Dabrowski, J. Shea, C. Vale, Heinz Pernegger, W. Kita, M. Lemler, E. Garcia, S. Gushue, S. Basilev, G. A. Heintzelman, K. Gałuszka, R. Teng, Inkyu Park, Wit Busza, P. Żychowski, T. Coghen, W. Kucewicz, Rachid Nouicer, Adam Trzupek, Krzysztof Woźniak, J. Sinacore, W. Bogucki, Russell Richard Betts, and Conor Henderson

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Pseudorapidity, Strangeness production, Nuclear Experiment, Nucleon, Charged particle, Beam (structure), Semiconductor detector, Rate of increase
Abstract

The early summer of 2000 saw the start of the RHIC experimental programme. The PHOBOS collaboration used data from the beginning of the running period to extract the first physics information about this exciting new regime. This first measurement consisted of pseudorapidity densities of primary charged particles near mid-rapidity in central Au + Au collisions at beam energies which gave centre-of-mass energies per pair of colliding nucleons of √snn = 56 and 130 GeV. The observed densities are higher than those observed previously in any collisions in the laboratory. In addition, the rate of increase in density between the two energies is significantly larger than that for nucleon-nucleon collisions at comparable beam energies. This paper will briefly describe the PHOBOS experiment (including the subset of the full detector installed for the early period of the RHIC beam), discuss the results of the first physics measurement and conclude with the prospects for the future, especially in the area of strangeness production.

Published
2001

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