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21 results on '"I. Zborovský"'

1. Self-Similarity of Negative Particle Production in Au + Au Collisions at STAR

Author

Mikhail Tokarev, Armen Kechechyan, and I. Zborovský

Subjects
Physics, Nuclear and High Energy Physics, Range (particle radiation), Radiation, 010308 nuclear & particles physics, Star (game theory), Hadron, 01 natural sciences, Atomic and Molecular Physics, and Optics, Spectral line, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, Radiology, Nuclear Medicine and imaging, Production (computer science), Nuclear Experiment, 010306 general physics, Centrality, Scaling, Energy (signal processing)
Abstract

Results of a new analysis of negative particle yields in Au + Au collisions obtained by the STAR Collaboration in the first phase of the RHIC Beam Energy Scan (BES) program in the framework of $$z$$ -scaling approach are presented. The spectra were measured over a wide range of collision energy $$\sqrt {{{s}_{{NN}}}} = 7.7 - 200$$ GeV and transverse momentum of produced particles for different centralities at $$\left| \eta \right| < 0.5.$$ The concept of the $$z$$ -scaling based on self-similarity, locality, and fractality of hadron interactions at a constituent level is verified. The constituent energy loss as a function of energy and centrality of collision and transverse momentum of inclusive particle was estimated.

Published
2019

2. Top-quark p T -spectra at CMS and flavor independence of z-scaling

Author

Mikhail Tokarev and I. Zborovský

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Top quark, Radiation, Large Hadron Collider, 010308 nuclear & particles physics, Physics beyond the Standard Model, High Energy Physics::Phenomenology, Tevatron, Jet (particle physics), 01 natural sciences, Atomic and Molecular Physics, and Optics, Spectral line, Nuclear physics, 0103 physical sciences, Saturation (graph theory), High Energy Physics::Experiment, Radiology, Nuclear Medicine and imaging, 010306 general physics, Scaling
Abstract

We present new results of analysis of top-quark differential cross sections obtained by the CMS Collaboration in pp collisions in the framework of the z-scaling approach. The spectra are measured over a wide range of collision energy $$\sqrt s = 7,8,13TeV$$ and transverse momentum p T = 30−500 GeV/c of top-quark using leptonic and jet decay modes. Flavor independence of the scaling function ψ(z) is verified in the new kinematic range. The results of analysis of the top-quark spectra obtained at the LHC are compared with similar spectra measured in $$\overline p p$$ collisions at the Tevatron energy $$\sqrt s = 1.96TeV$$ . A tendency to saturation of ψ(z) for the process at low z and a power-law behavior of ψ(z) at high z is observed. The measurements of high-p T is observed. The measurements of highspectra of the top-quark production at highest LHC energy is of interest for verification of self-similarity of particle production, understanding flavor origin and search for new physics symmetries with top-quark probe.

Published
2017

3. Validation of z-scaling for negative particle production in Au + Au collisions from BES-I at STAR

Author

I. Zborovský, Armen Kechechyan, and Mikhail Tokarev

Subjects
Physics, Nuclear and High Energy Physics, Energy loss, 010308 nuclear & particles physics, Hadron, Collision, 01 natural sciences, Spectral line, Nuclear physics, Fractal, Fragmentation (mass spectrometry), 0103 physical sciences, Nuclear Experiment, 010306 general physics, Beam energy, Scaling
Abstract

We present results of analysis of negative particle spectra in A u + A u collisions obtained by the STAR Collaboration in the first phase of the Beam Energy Scan program at RHIC using the z-scaling approach. The spectra were measured over a wide range of collision energy s N N = 7.7 –200 GeV and transverse momentum of produced particles for different centralities in the pseudo-rapidity range | η | 0.5 . A scaling behavior of the spectra as a function of the collision energy and centrality in z-presentation is observed. The concept of the z-scaling based on fundamental principles of self-similarity, locality, and fractality of hadron interactions at high energies is considered. The energy loss as a function of the energy and centrality of the collision and the transverse momentum of inclusive particle is estimated. New indication on self-similarity of fractal structure of nuclei and fragmentation processes with negative particles produced in A u + A u collisions at RHIC is found.

Published
2020

4. Three-component multiplicity distribution, oscillation of combinants and properties of clans in $pp$ collisions at the LHC

Author

I. Zborovský

Subjects
Physics, Particle physics, Large Hadron Collider, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Oscillation, Negative binomial distribution, FOS: Physical sciences, Multiplicity (mathematics), lcsh:Astrophysics, 01 natural sciences, Charged particle, Superposition principle, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, lcsh:QB460-466, lcsh:QC770-798, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Multiplicity distribution
Abstract

Multiplicity distributions of charged particles measured by the ATLAS Collaboration in proton-proton collisions at $\sqrt{s}=8$ and 13 TeV are analyzed in the framework of a weighted superposition of three negative binomial distribution functions. The examination of the experimental data confirms the existence of a narrow peak at low multiplicities found earlier at $\sqrt{s}=0.9$ and 7 TeV. The peak is described by the third separate component of the total distribution. The energy dependence of the multiplicity characteristics of the three-component scenario is studied. It is demonstrated that the third multiplicity component might be responsible for oscillations of combinants observed lately in the analysis of the multiplicity distributions measured in proton-proton collisions at the LHC. Some consequences of the three-component description of the data for the clan parameters are analyzed., 24 pages, 21 figures

Published
2018

5. A conservation law, entropy principle and quantization of fractal dimensions in hadron interactions

Author

I. Zborovský

Subjects
Physics, Nuclear and High Energy Physics, Conservation law, Self-similarity, 010308 nuclear & particles physics, Hadron, Astronomy and Astrophysics, 01 natural sciences, Fractal dimension, Atomic and Molecular Physics, and Optics, Quantization (physics), Theoretical physics, Fractal, Recoil, 0103 physical sciences, Nuclear Experiment, 010306 general physics, Scaling
Abstract

Fractal self-similarity of hadron interactions demonstrated by the [Formula: see text]-scaling of inclusive spectra is studied. The scaling regularity reflects fractal structure of the colliding hadrons (or nuclei) and takes into account general features of fragmentation processes expressed by fractal dimensions. The self-similarity variable [Formula: see text] is a function of the momentum fractions [Formula: see text] and [Formula: see text] of the colliding objects carried by the interacting hadron constituents and depends on the momentum fractions [Formula: see text] and [Formula: see text] of the scattered and recoil constituents carried by the inclusive particle and its recoil counterpart, respectively. Based on entropy principle, new properties of the [Formula: see text]-scaling concept are found. They are conservation of fractal cumulativity in hadron interactions and quantization of fractal dimensions characterizing hadron structure and fragmentation processes at a constituent level.

Published
2018

6. New indication on scaling properties of strangeness production in pp collisions at RHIC

Author

I. Zborovský and M. Tokarev

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Physics beyond the Standard Model, Hadron, Strangeness production, Astronomy and Astrophysics, Strangeness, 01 natural sciences, Atomic and Molecular Physics, and Optics, Spectral line, Nuclear physics, Recoil, Fractal, 0103 physical sciences, Nuclear Experiment, 010306 general physics, Scaling
Abstract

Experimental data on transverse momentum spectra of strange particles [Formula: see text] produced in [Formula: see text] collisions at [Formula: see text] obtained by the STAR and PHENIX collaborations at RHIC are analyzed in the framework of [Formula: see text]-scaling approach. The concept of the [Formula: see text]-scaling is based on fundamental principles of self-similarity, locality, and fractality of hadron interactions at high energies. General properties of the data [Formula: see text]-presentation are studied. Self-similarity of fractal structure of protons and fragmentation processes with strange particles is discussed. A microscopic scenario of constituent interactions developed within the [Formula: see text]-scaling scheme is used to study the dependence of momentum fractions and recoil mass on the collision energy, transverse momentum and mass of produced inclusive particle, and to estimate the constituent energy loss. We consider that obtained results can be useful in study of strangeness origin, in searching for new physics with strange probes, and can serve for better understanding of fractality of hadron interactions at small scales.

Published
2017

7. A-DEPENDENCE OF Z-SCALING

Author

I. Zborovský, M. V. Tokarev, G. P. Skoro, and Yu. A. Panebratsev

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Hadron, Astronomy and Astrophysics, 01 natural sciences, Atomic and Molecular Physics, and Optics, Nuclear physics, Transverse plane, Fractal, Pseudorapidity, 0103 physical sciences, Transverse momentum, Scale relativity, Multiplicity (chemistry), Nuclear Experiment, 010306 general physics, Scaling, Nuclear Physics
Abstract

The A-dependence of z-scaling in inclusive hadron production in pA collisions at high transverse momenta is studied. The concept of z-scaling based on the fundamental principles of Nature such as self-similarity, locality, scale relativity and fractality reflecting the general features of particle interactions is applied for the description of processes of hadron production in pA collisions. The scaling function ψ is expressed via the invariant cross-section Ed3σ/dq3 and the average multiplicity density dN/dη of particles produced at pseudorapidity η=0 in the corresponding nucleon–nucleon interaction. The independence of the function ψ(z) on the center-of-mass energy [Formula: see text] for particle production near 90° in the NN c.m. system for different nuclei from D up to Pb is shown. The scale transformation z→az, ψ→a-1ψ is used to determine the A-dependence of the transformation parameter a. Based on the properties of z-scaling the dependence of the cross-sections for the π±, K±, and [Formula: see text] hadrons produced in pA collisions on transverse momentum q⊥ in the central region (η=0) at RHIC energies is predicted.

Published
2001

8. Zscaling in proton-nucleus collisions at high energies

Author

M. Tokarev, G. P. Skoro, I. Zborovský, and Yu. A. Panebratsev

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, medicine.anatomical_structure, Proton, 010308 nuclear & particles physics, 0103 physical sciences, medicine, Nuclear Experiment, 010306 general physics, 01 natural sciences, Scaling, Nucleus
Abstract

New scaling, z scaling, in the inclusive particle production in pA collisions is studied. The concept of z scaling is based on fundamental principles such as self-similarity, locality, scale relativity, and fractality reflecting the general features of particle interactions. The scaling function H-A(z) is expressed via the invariant cross section Ed(3)sigma/dq(3) and the average multiplicity density dN/d eta of particles produced at pseudorapidity eta=0 in the corresponding nucleon-nucleon interaction. The dependence of H-A(z) on scaling variable z, the center-of-mass energy root s and the atomic number A is investigated. It is shown that the available experimental data on cross sections in pA collisions confirm the scaling properties of the function H-A(z). The obtained results can be of interest for future experiments at BNL relativistic heavy-ion collider and CERN large hadron collider in searching for new physical phenomena in pp, pA, and AA collisions. [S0556-2813(99)02304-3].

Published
1999

9. Self-similarity of strangeness production in pp collisions at RHIC

Author

M Tokarev and I Zborovský

Subjects
Physics, History, Strange quark, Nuclear Theory, Proton, 010308 nuclear & particles physics, Physics beyond the Standard Model, FOS: Physical sciences, Strangeness production, Strangeness, 01 natural sciences, Computer Science Applications, Education, Nuclear Theory (nucl-th), Nuclear physics, Momentum, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Recoil, 0103 physical sciences, Nuclear Experiment (nucl-ex), Nuclear Experiment, 010306 general physics, Scaling
Abstract

New experimental data on transverse momentum spectra of strange particles (KS0, K-, K*, phi,...) produced in pp collisions at sqrt s = 200 GeV obtained by the STAR and PHENIX collaborations at RHIC are analysed in the framework of z-scaling approach. Scaling properties of the data z-presentation are illustrated. Self-similarity of strange particle production is discussed. A microscopic scenario of constituent interactions developed within the z-scaling approach is used to study constituent energy loss, proton momentum fraction and recoil mass in dependence on the transverse momentum, strangeness, and mass of the inclusive particle. The obtained results can be useful for understanding strangeness origin, for searching for new physics with strange probes and can serve as a benchmark for complex analyses of self-similar features of strange production in heavy ion collisions., Comment: 4 pages, LaTeX, 4 figures

Published
2016

10. Event-wise〈pt〉fluctuations in Au-Au collisions atsNN=130GeV

Author

J. Adams, C. Adler, M. M. Aggarwal, Z. Ahammed, J. Amonett, B. D. Anderson, M. Anderson, D. Arkhipkin, G. S. Averichev, S. K. Badyal, J. Balewski, O. Barannikova, L. S. Barnby, J. Baudot, S. Bekele, V. V. Belaga, R. Bellwied, J. Berger, B. I. Bezverkhny, S. Bhardwaj, P. Bhaskar, A. K. Bhati, H. Bichsel, A. Billmeier, L. C. Bland, C. O. Blyth, B. E. Bonner, M. Botje, A. Boucham, A. Brandin, A. Bravar, R. V. Cadman, X. Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, J. Carroll, J. Castillo, M. Castro, D. Cebra, P. Chaloupka, S. Chattopadhyay, H. F. Chen, Y. Chen, S. P. Chernenko, M. Cherney, A. Chikanian, B. Choi, W. Christie, J. P. Coffin, T. M. Cormier, J. G. Cramer, H. J. Crawford, D. Das, S. Das, A. A. Derevschikov, L. Didenko, T. Dietel, X. Dong, J. E. Draper, F. Du, A. K. Dubey, V. B. Dunin, J. C. Dunlop, M. R. Dutta Majumdar, V. Eckardt, L. G. Efimov, V. Emelianov, J. Engelage, G. Eppley, B. Erazmus, M. Estienne, P. Fachini, V. Faine, J. Faivre, R. Fatemi, K. Filimonov, P. Filip, E. Finch, Y. Fisyak, D. Flierl, K. J. Foley, J. Fu, C. A. Gagliardi, M. S. Ganti, T. D. Gutierrez, N. Gagunashvili, J. Gans, L. Gaudichet, M. Germain, F. Geurts, V. Ghazikhanian, P. Ghosh, J. E. Gonzalez, O. Grachov, V. Grigoriev, S. Gronstal, D. Grosnick, M. Guedon, S. M. Guertin, A. Gupta, E. Gushin, T. J. Hallman, D. Hardtke, J. W. Harris, M. Heinz, T. W. Henry, S. Heppelmann, T. Herston, B. Hippolyte, A. Hirsch, E. Hjort, G. W. Hoffmann, M. Horsley, H. Z. Huang, S. L. Huang, T. J. Humanic, G. Igo, A. Ishihara, P. Jacobs, W. W. Jacobs, M. Janik, I. Johnson, P. G. Jones, E. G. Judd, S. Kabana, M. Kaneta, M. Kaplan, D. Keane, J. Kiryluk, A. Kisiel, J. Klay, S. R. Klein, A. Klyachko, D. D. Koetke, T. Kollegger, A. S. Konstantinov, M. Kopytine, L. Kotchenda, A. D. Kovalenko, M. Kramer, P. Kravtsov, K. Krueger, C. Kuhn, A. I. Kulikov, A. Kumar, G. J. Kunde, C. L. Kunz, R. Kh. Kutuev, A. A. Kuznetsov, M. A. C. Lamont, J. M. Landgraf, S. Lange, C. P. Lansdell, B. Lasiuk, F. Laue, J. Lauret, A. Lebedev, R. Lednický, V. M. Leontiev, M. J. LeVine, C. Li, Q. Li, S. J. Lindenbaum, M. A. Lisa, F. Liu, L. Liu, Z. Liu, Q. J. Liu, T. Ljubicic, W. J. Llope, H. Long, R. S. Longacre, M. Lopez-Noriega, W. A. Love, T. Ludlam, D. Lynn, J. Ma, Y. G. Ma, D. Magestro, S. Mahajan, L. K. Mangotra, D. P. Mahapatra, R. Majka, R. Manweiler, S. Margetis, C. Markert, L. Martin, J. Marx, H. S. Matis, Yu. A. Matulenko, T. S. McShane, F. Meissner, Yu. Melnick, A. Meschanin, M. Messer, M. L. Miller, Z. Milosevich, N. G. Minaev, C. Mironov, D. Mishra, J. Mitchell, B. Mohanty, L. Molnar, C. F. Moore, M. J. Mora-Corral, V. Morozov, M. M. de Moura, M. G. Munhoz, B. K. Nandi, S. K. Nayak, T. K. Nayak, J. M. Nelson, P. Nevski, V. A. Nikitin, L. V. Nogach, B. Norman, S. B. Nurushev, G. Odyniec, A. Ogawa, V. Okorokov, M. Oldenburg, D. Olson, G. Paic, S. U. Pandey, S. K. Pal, Y. Panebratsev, S. Y. Panitkin, A. I. Pavlinov, T. Pawlak, V. Perevoztchikov, W. Peryt, V. A. Petrov, S. C. Phatak, R. Picha, M. Planinic, J. Pluta, N. Porile, J. Porter, A. M. Poskanzer, M. Potekhin, E. Potrebenikova, B. V. K. S. Potukuchi, D. Prindle, C. Pruneau, J. Putschke, G. Rai, G. Rakness, R. Raniwala, S. Raniwala, O. Ravel, R. L. Ray, S. V. Razin, D. Reichhold, J. G. Reid, G. Renault, F. Retiere, A. Ridiger, H. G. Ritter, J. B. Roberts, O. V. Rogachevski, J. L. Romero, A. Rose, C. Roy, L. J. Ruan, R. Sahoo, I. Sakrejda, S. Salur, J. Sandweiss, I. Savin, J. Schambach, R. P. Scharenberg, N. Schmitz, L. S. Schroeder, K. Schweda, J. Seger, D. Seliverstov, P. Seyboth, E. Shahaliev, M. Shao, M. Sharma, K. E. Shestermanov, S. S. Shimanskii, R. N. Singaraju, F. Simon, G. Skoro, N. Smirnov, R. Snellings, G. Sood, P. Sorensen, J. Sowinski, H. M. Spinka, B. Srivastava, S. Stanislaus, R. Stock, A. Stolpovsky, M. Strikhanov, B. Stringfellow, C. Struck, A. A. P. Suaide, E. Sugarbaker, C. Suire, M. Šumbera, B. Surrow, T. J. M. Symons, A. Szanto de Toledo, P. Szarwas, A. Tai, J. Takahashi, A. H. Tang, D. Thein, J. H. Thomas, V. Tikhomirov, M. Tokarev, M. B. Tonjes, T. A. Trainor, S. Trentalange, R. E. Tribble, M. D. Trivedi, V. Trofimov, O. Tsai, T. Ullrich, D. G. Underwood, G. Van Buren, A. M. VanderMolen, A. N. Vasiliev, M. Vasiliev, S. E. Vigdor, Y. P. Viyogi, W. Waggoner, F. Wang, G. Wang, X. L. Wang, Z. M. Wang, H. Ward, J. W. Watson, R. Wells, G. D. Westfall, C. Whitten, Jr., H. Wieman, R. Willson, S. W. Wissink, R. Witt, J. Wood, J. Wu, N. Xu, Z. Xu, Z. Z. Xu, A. E. Yakutin, E. Yamamoto, J. Yang, P. Yepes, V. I. Yurevich, Y. V. Zanevski, I. Zborovský, H. Zhang, H. Y. Zhang, W. M. Zhang, Z. P. Zhang, P. A. Żołnierczuk, R. Zoulkarneev, J. Zoulkarneeva, and A. N. Zubarev

Subjects
Physics, Nuclear and High Energy Physics, Range (particle radiation), 010308 nuclear & particles physics, Scattering, Hadron, Parton, Dissipation, Collision, 01 natural sciences, Nuclear physics, Pseudorapidity, 0103 physical sciences, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, 010306 general physics, Event (particle physics)
Abstract

We present the first large-acceptance measurement of event-wise mean transverse momentum fluctuations for Au-Au collisions at nucleon-nucleon center-of-momentum collision energy root s(NN) = 130 GeV. The observed nonstatistical fluctuations substantially exceed in magnitude fluctuations expected from the finite number of particles produced in a typical collision. The r.m.s. fractional width excess of the event-wise distribution is 13.7 +/- 0.1(stat) +/- 1.3(syst)% relative to a statistical reference, for the 15% most-central collisions and for charged hadrons within pseudorapidity range vertical bar eta vertical bar fluctuation excess is qualitatively larger than those observed at lower energies and differs markedly from theoretical expectations. Contributions to fluctuations from semihard parton scattering in the initial state and dissipation in the bulk colored medium are discussed.

Published
2005

11. Photon and neutral pion production inAu+Aucollisions atsNN=130GeV

Author

B. D. Anderson, G. Eppley, Xu Cai, Marcelo Gameiro Munhoz, D. J. Prindle, J. Pluta, Madan M. Aggarwal, Fuqiang Wang, V. V. Belaga, R. E. Tribble, Gerald W Hoffmann, N. Xu, P. Filip, H. Zhang, Vladimir Petrov, E. Yamamoto, T. Dietel, A. K. Dubey, Souvik Das, D. Mishra, R. Witt, M. A. Lisa, A. Stolpovsky, Mirko Planinic, A. Kumar, B. Choi, L. Kotchenda, E. Sugarbaker, A. Lebedev, B. I. Bezverkhny, S. P. Chernenko, W. J. Llope, Sergey Voloshin, Subrata Pal, B. K. Srivastava, P. Seyboth, M. D. Trivedi, K. J. Foley, M. Oldenburg, M. Kaneta, P. Sorensen, F. Du, Peter Graham Jones, V. I. Yurevich, C. O. Blyth, Frank Simon, M. Castro, O. A. Grachov, X. Dong, A. Bravar, A. Rose, Rama Narayana Singaraju, T. W. Henry, G. D. Westfall, J. Gans, Hao-Ze Chen, S. Bhardwaj, Boris Hippolyte, A. H. Tang, Guy Paic, A. Chikanian, S. S. Shimanskii, Michal Sumbera, G. Renault, Alexander Kovalenko, L. V. Nogach, W. Christie, M. Heinz, Lee Stuart Barnby, F. Meissner, Y. Panebratsev, A. I. Kulikov, B. Lasiuk, J. C. Dunlop, D. Grosnick, C-Q. Li, Malgorzata Anna Janik, G. Rai, I. Sakrejda, J. Baudot, M. Calderon De La Barca Sanchez, C. Suire, A. Billmeier, J. G. Cramer, B. Erazmus, V. Faine, W. M. Zhang, Andrey Vasiliev, Zubayer Ahammed, Y. V. Zanevski, Sukalyan Chattopadhyay, B. Norman, M. Shao, H. Long, V. Grigoriev, J. Castillo, M. J. LeVine, R. P. Scharenberg, L. C. Bland, S. W. Wissink, L. Didenko, S. M. Guertin, M. Botje, A. A.P. Suaide, H. S. Matis, Janet Elizabeth Seger, J. Adams, R. L. Ray, E. Potrebenikova, S. K. Badyal, A. Boucham, D. Arkhipkin, D. P. Mahapatra, D. Cebra, Yu Chen, S. Trentalange, Matthew J. Anderson, W. W. Jacobs, D. Reichhold, A. I. Pavlinov, M. Estienne, W. A. Love, L. S. Schroeder, Zhenyu Zhang, F. Liu, M. B. Tonjes, V. Morozov, F. Retiere, Yu Melnick, M. M. de Moura, J. Lauret, S. Bekele, M. L. Miller, T. Ljubicic, V. A. Nikitin, S. V. Razin, M. S. Ganti, A. A. Kuznetsov, V. M. Leontiev, Olivier Ravel, S. Mahajan, A. Ridiger, Thorsten Sven Kollegger, J. Engelage, N. G. Minaev, H. Y. Zhang, Q. Li, D. Magestro, H. Caines, Sudhir Raniwala, L. Molnar, L. Gaudichet, J. Kiryluk, M. Kramer, K. E. Shestermanov, S. Stanislaus, T. D. Gutierrez, D. Hardtke, A. Tai, R. D. Majka, G. Sood, Z. M. Wang, John N. Wood, S. Heppelmann, T. S. McShane, Vitaly Okorokov, G. Rakness, C. Roy, Jay Roberts, H. Ward, H. Bichsel, G. Odyniec, S. Margetis, J. Schambach, Zhongyukun Xu, H. M. Spinka, P. Bhaskar, D. Flierl, Premomoy Ghosh, J. Amonett, L. Martin, J. Klay, Lianshou Liu, G. Skoro, C. Mironov, M. Germain, C. L. Kunz, C. P. Lansdell, C. A. Whitten, J. M. Landgraf, Z. Liu, B. V.K.S. Potukuchi, M. J. Mora-Corral, M. Potekhin, Y. Fisyak, V. Emelianov, Ian Johnson, Yu-Gang Ma, P. Szarwas, C. F. Moore, J. Balewski, Rashmi Raniwala, A. Klyachko, A. K. Bhati, R.J.M. Snellings, D. Keane, M. Strikhanov, S. Gronstal, J. H. Thomas, S. Lange, E. G. Judd, D. D. Koetke, J. E. Draper, S. C. Phatak, Claude Andre Pruneau, Nikolai Smirnov, David Lynn, Vladimir Tikhomirov, C. A. Gagliardi, S. J. Lindenbaum, H. G. Ritter, P.A. Zolnierczuk, R. Stock, J. Mitchell, T. Herston, H. Z. Huang, R. Lednický, P. Chaloupka, L. G. Efimov, J. E. Gonzalez, R. Bellwied, Bedangadas Mohanty, Christina Markert, J. Sandweiss, A. S. Konstantinov, T. Ullrich, J. P. Coffin, O. V. Rogachevski, R. Zoulkarneev, T. K. Nayak, V. Perevoztchikov, V. Trofimov, C. Struck, G. S. Averichev, Julien Faivre, K. Filimonov, B. E. Bonner, A. Ishihara, M. Lopez-Noriega, S. Kabana, Y. P. Viyogi, J. Takahashi, J. Putschke, T. J. Humanic, O. D. Tsai, J. G. Ma, S. U. Pandey, A. E. Yakutin, A. V. Brandin, J. W. Harris, Basanta Kumar Nandi, I.A. Savin, N. T. Porile, Sergey Panitkin, J. W. Watson, J. Marx, M. Guedon, A. M. VanderMolen, E. Gushin, G. J. Kunde, P. Yepes, V. Eckardt, S. E. Vigdor, M. A. Vasiliev, Yu A. Matulenko, M. Horsley, Christian Claude Kuhn, A. Ogawa, B. Stringfellow, Shengli Huang, Thomas A. Trainor, B. Surrow, Sevil Salur, A. S. Hirsch, P. Kravtsov, C. Adler, Jeffrey G. Reid, J. Sowinski, N.D. Gagunashvili, D. Thein, R. Wells, G. Van Buren, M. Kopytine, J. Fu, M. Tokarev, T. W. Ludlam, H. H. Wieman, L. K. Mangotra, R. Manweiler, M. R. Dutta Majumdar, J. M. Nelson, A. M. Poskanzer, N. Schmitz, E. Shahaliev, W. Peryt, V. Ghazikhanian, J. L. Romero, D. Seliverstov, E. Finch, I. Zborovský, X. L. Wang, P. Fachini, Peter Martin Jacobs, E. Hjort, J. Carroll, Gang Wang, S. K. Nayak, M. A. C. Lamont, S. B. Nurushev, Z. Milosevich, Z. Xu, A. P. Meschanin, Anik Gupta, R. V. Cadman, Jianhong Wu, Manish Sharma, Morton Kaplan, Frank Jm Geurts, R. S. Longacre, Debasish Das, Raghunath Sahoo, G. Igo, J. Zoulkarneeva, W. T. Waggoner, K. Schweda, Adam Ryszard Kisiel, H. J. Crawford, R. Fatemi, K. Krueger, A. N. Zubarev, R. Picha, M. Messer, M. Cherney, Thomas Michael Cormier, P. Nevski, F. Laue, A. Szanto de Toledo, T. Pawlak, Jinghui Yang, J. Porter, R.Kh. Kutuev, S. R. Klein, J. Berger, O. Barannikova, D. L. Olson, A. A. Derevschikov, V. B. Dunin, R. Willson, D. G. Underwood, Lijuan Ruan, Q. J. Liu, T. J. Hallman, and T. J. M. Symons

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Photon, Meson, 010308 nuclear & particles physics, 01 natural sciences, Particle identification, Spectral line, Nuclear physics, Particle decay, Positron, Pion, 0103 physical sciences, High Energy Physics::Experiment, Invariant mass, Nuclear Experiment, 010306 general physics
Abstract

We report inclusive photon measurements about midrapidity (\y\ gammagamma decay channel. The fractional contribution of the pi(0)-->gammagamma decay to the inclusive photon spectrum decreases by 20%+/-5% between p(t)=1.65 GeV/c and p(t)=2.4 GeV/c in the most central events, indicating that relative to pi(0)-->gammagamma decay the contribution of other photon sources is substantially increasing.

Published
2004

12. Rapidity and centrality dependence of proton and antiproton production fromAu197+Au197collisions atSNN=130GeV

Author

J. Adams, C. Adler, M. M. Aggarwal, Z. Ahammed, J. Amonett, B. D. Anderson, M. Anderson, D. Arkhipkin, G. S. Averichev, S. K. Badyal, J. Balewski, O. Barannikova, L. S. Barnby, J. Baudot, S. Bekele, V. V. Belaga, R. Bellwied, J. Berger, B. I. Bezverkhny, S. Bhardwaj, P. Bhaskar, A. K. Bhati, H. Bichsel, A. Billmeier, L. C. Bland, C. O. Blyth, B. E. Bonner, M. Botje, A. Boucham, A. Brandin, A. Bravar, R. V. Cadman, X. Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, A. Cardenas, J. Carroll, J. Castillo, M. Castro, D. Cebra, P. Chaloupka, S. Chattopadhyay, H. F. Chen, Y. Chen, S. P. Chernenko, M. Cherney, A. Chikanian, B. Choi, W. Christie, J. P. Coffin, T. M. Cormier, J. G. Cramer, H. J. Crawford, D. Das, S. Das, A. A. Derevschikov, L. Didenko, T. Dietel, X. Dong, J. E. Draper, F. Du, A. K. Dubey, V. B. Dunin, J. C. Dunlop, M. R. Dutta Mazumdar, V. Eckardt, L. G. Efimov, V. Emelianov, J. Engelage, G. Eppley, B. Erazmus, P. Fachini, V. Faine, J. Faivre, R. Fatemi, K. Filimonov, P. Filip, E. Finch, Y. Fisyak, D. Flierl, K. J. Foley, J. Fu, C. A. Gagliardi, M. S. Ganti, T. D. Gutierrez, N. Gagunashvili, J. Gans, L. Gaudichet, M. Germain, F. Geurts, V. Ghazikhanian, P. Ghosh, J. E. Gonzalez, O. Grachov, V. Grigoriev, D. Grosnick, M. Guedon, S. M. Guertin, A. Gupta, E. Gushin, T. J. Hallman, D. Hardtke, J. W. Harris, M. Heinz, T. W. Henry, S. Heppelmann, T. Herston, B. Hippolyte, A. Hirsch, E. Hjort, G. W. Hoffmann, M. Horsley, H. Z. Huang, S. L. Huang, T. J. Humanic, G. Igo, A. Ishihara, P. Jacobs, W. W. Jacobs, M. Janik, I. Johnson, P. G. Jones, E. G. Judd, S. Kabana, M. Kaneta, M. Kaplan, D. Keane, J. Kiryluk, A. Kisiel, J. Klay, S. R. Klein, A. Klyachko, D. D. Koetke, T. Kollegger, A. S. Konstantinov, M. Kopytine, L. Kotchenda, A. D. Kovalenko, M. Kramer, P. Kravtsov, K. Krueger, C. Kuhn, A. I. Kulikov, A. Kumar, G. J. Kunde, C. L. Kunz, R. Kh. Kutuev, A. A. Kuznetsov, M. A. C. Lamont, J. M. Landgraf, S. Lange, C. P. Lansdell, B. Lasiuk, F. Laue, J. Lauret, A. Lebedev, R. Lednický, V. M. Leontiev, M. J. LeVine, C. Li, Q. Li, S. J. Lindenbaum, M. A. Lisa, F. Liu, L. Liu, Z. Liu, Q. J. Liu, T. Ljubicic, W. J. Llope, H. Long, R. S. Longacre, M. Lopez-Noriega, W. A. Love, T. Ludlam, D. Lynn, J. Ma, Y. G. Ma, D. Magestro, S. Mahajan, L. K. Mangotra, A. P. Mahapatra, R. Majka, R. Manweiler, S. Margetis, C. Markert, L. Martin, J. Marx, H. S. Matis, Yu. A. Matulenko, T. S. McShane, F. Meissner, Yu. Melnick, A. Meschanin, M. Messer, M. L. Miller, Z. Milosevich, N. G. Minaev, C. Mironov, D. Mishra, J. Mitchell, B. Mohanty, L. Molnar, C. F. Moore, M. J. Mora-Corral, V. Morozov, M. M. de Moura, M. G. Munhoz, B. K. Nandi, S. K. Nayak, T. K. Nayak, J. M. Nelson, P. Nevski, V. A. Nikitin, L. V. Nogach, B. Norman, S. B. Nurushev, G. Odyniec, A. Ogawa, V. Okorokov, M. Oldenburg, D. Olson, G. Paic, S. U. Pandey, S. Pal, Y. Panebratsev, S. Y. Panitkin, A. I. Pavlinov, T. Pawlak, V. Perevoztchikov, W. Peryt, V. A. Petrov, S. C. Phatak, R. Picha, J. Pluta, N. Porile, J. Porter, A. M. Poskanzer, M. Potekhin, E. Potrebenikova, B. V. K. S. Potukuchi, D. Prindle, C. Pruneau, J. Putschke, G. Rai, G. Rakness, R. Raniwala, S. Raniwala, O. Ravel, R. L. Ray, S. V. Razin, D. Reichhold, J. G. Reid, G. Renault, F. Retiere, A. Ridiger, H. G. Ritter, J. B. Roberts, O. V. Rogachevski, J. L. Romero, A. Rose, C. Roy, L. J. Ruan, V. Rykov, R. Sahoo, I. Sakrejda, S. Salur, J. Sandweiss, I. Savin, J. Schambach, R. P. Scharenberg, N. Schmitz, L. S. Schroeder, K. Schweda, J. Seger, D. Seliverstov, P. Seyboth, E. Shahaliev, M. Shao, M. Sharma, K. E. Shestermanov, S. S. Shimanskii, R. N. Singaraju, F. Simon, G. Skoro, N. Smirnov, R. Snellings, G. Sood, P. Sorensen, J. Sowinski, H. M. Spinka, B. Srivastava, S. Stanislaus, E. J. Stephenson, R. Stock, A. Stolpovsky, M. Strikhanov, B. Stringfellow, C. Struck, A. A. P. Suaide, E. Sugarbaker, C. Suire, M. Šumbera, B. Surrow, T. J. M. Symons, A. Szanto de Toledo, P. Szarwas, A. Tai, J. Takahashi, A. H. Tang, D. Thein, J. H. Thomas, V. Tikhomirov, M. Tokarev, M. B. Tonjes, T. A. Trainor, S. Trentalange, R. E. Tribble, M. D. Trivedi, V. Trofimov, O. Tsai, T. Ullrich, D. G. Underwood, G. Van Buren, A. M. Vander Molen, A. N. Vasiliev, M. Vasiliev, S. E. Vigdor, Y. P. Viyogi, S. A. Voloshin, F. Wang, G. Wang, X. L. Wang, Z. M. Wang, H. Ward, J. W. Watson, R. Wells, G. D. Westfall, C. Whitten, H. Wieman, R. Willson, S. W. Wissink, R. Witt, J. Wood, J. Wu, N. Xu, Z. Xu, Z. Z. Xu, A. E. Yakutin, E. Yamamoto, J. Yang, P. Yepes, V. I. Yurevich, Y. V. Zanevski, I. Zborovský, H. Zhang, H. Y. Zhang, W. M. Zhang, Z. P. Zhang, P. A. Żołnierczuk, R. Zoulkarneev, J. Zoulkarneeva, and A. N. Zubarev

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Proton, Mass distribution, 010308 nuclear & particles physics, Elliptic flow, Order (ring theory), 01 natural sciences, Nuclear physics, Transverse plane, Antiproton, 0103 physical sciences, Transverse mass, Rapidity, Nuclear Experiment, 010306 general physics
Abstract

We report on the rapidity and centrality dependence of proton and anti-proton transverse mass distributions from {sup 197}Au + {sup 197}Au collisions at {radical}s{sub NN} = 130 GeV as measured by the STAR experiment at RHIC. Our results are from the rapidity and transverse momentum range of |y| < 0.5 and 0.35 < p{sub t} < 1.00 GeV/c. For both protons and anti-protons, transverse mass distributions become more convex from peripheral to central collisions demonstrating characteristics of collective expansion. The measured rapidity distributions and the mean transverse momenta versus rapidity are flat within |y| < 0.5. Comparisons of our data with results from model calculations indicate that in order to obtain a consistent picture of the proton(anti-proton) yields and transverse mass distributions the possibility of pre-hadronic collective expansion may have to be taken into account.

Published
2004

13. Cross Sections and Transverse Single-Spin Asymmetries in Forward Neutral-Pion Production from Proton Collisions ats=200 GeV

Author

J. Adams, C. Adler, M. M. Aggarwal, Z. Ahammed, J. Amonett, B. D. Anderson, M. Anderson, D. Arkhipkin, G. S. Averichev, S. K. Badyal, J. Balewski, O. Barannikova, L. S. Barnby, J. Baudot, S. Bekele, V. V. Belaga, R. Bellwied, J. Berger, B. I. Bezverkhny, S. Bhardwaj, P. Bhaskar, A. K. Bhati, H. Bichsel, A. Billmeier, L. C. Bland, C. O. Blyth, B. E. Bonner, M. Botje, A. Boucham, A. Brandin, A. Bravar, R. V. Cadman, X. Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, J. Carroll, J. Castillo, M. Castro, D. Cebra, P. Chaloupka, S. Chattopadhyay, H. F. Chen, Y. Chen, S. P. Chernenko, M. Cherney, A. Chikanian, B. Choi, W. Christie, J. P. Coffin, T. M. Cormier, J. G. Cramer, H. J. Crawford, D. Das, S. Das, A. A. Derevschikov, L. Didenko, T. Dietel, W. J. Dong, X. Dong, J. E. Draper, F. Du, A. K. Dubey, V. B. Dunin, J. C. Dunlop, M. R. Dutta Majumdar, V. Eckardt, L. G. Efimov, V. Emelianov, J. Engelage, G. Eppley, B. Erazmus, M. Estienne, P. Fachini, V. Faine, J. Faivre, R. Fatemi, K. Filimonov, P. Filip, E. Finch, Y. Fisyak, D. Flierl, K. J. Foley, J. Fu, C. A. Gagliardi, N. Gagunashvili, J. Gans, M. S. Ganti, L. Gaudichet, M. Germain, F. Geurts, V. Ghazikhanian, P. Ghosh, J. E. Gonzalez, O. Grachov, V. Grigoriev, S. Gronstal, D. Grosnick, M. Guedon, S. M. Guertin, A. Gupta, E. Gushin, T. D. Gutierrez, T. J. Hallman, D. Hardtke, J. W. Harris, M. Heinz, T. W. Henry, S. Heppelmann, T. Herston, B. Hippolyte, A. Hirsch, E. Hjort, G. W. Hoffmann, M. Horsley, H. Z. Huang, S. L. Huang, T. J. Humanic, G. Igo, A. Ishihara, P. Jacobs, W. W. Jacobs, M. Janik, H. Jiang, I. Johnson, P. G. Jones, E. G. Judd, S. Kabana, M. Kaneta, M. Kaplan, D. Keane, V. Yu. Khodyrev, J. Kiryluk, A. Kisiel, J. Klay, S. R. Klein, A. Klyachko, D. D. Koetke, T. Kollegger, M. Kopytine, L. Kotchenda, A. D. Kovalenko, M. Kramer, P. Kravtsov, V. I. Kravtsov, K. Krueger, C. Kuhn, A. I. Kulikov, A. Kumar, G. J. Kunde, C. L. Kunz, R. Kh. Kutuev, A. A. Kuznetsov, M. A. C. Lamont, J. M. Landgraf, S. Lange, C. P. Lansdell, B. Lasiuk, F. Laue, J. Lauret, A. Lebedev, R. Lednický, M. J. LeVine, C. Li, Q. Li, S. J. Lindenbaum, M. A. Lisa, F. Liu, L. Liu, Z. Liu, Q. J. Liu, T. Ljubicic, W. J. Llope, H. Long, R. S. Longacre, M. Lopez-Noriega, W. A. Love, T. Ludlam, D. Lynn, J. Ma, Y. G. Ma, D. Magestro, S. Mahajan, L. K. Mangotra, D. P. Mahapatra, R. Majka, R. Manweiler, S. Margetis, C. Markert, L. Martin, J. Marx, H. S. Matis, Yu. A. Matulenko, T. S. McShane, F. Meissner, Yu. Melnick, A. Meschanin, M. Messer, M. L. Miller, Z. Milosevich, N. G. Minaev, C. Mironov, D. Mishra, J. Mitchell, B. Mohanty, L. Molnar, C. F. Moore, M. J. Mora-Corral, D. A. Morozov, V. Morozov, M. M. de Moura, M. G. Munhoz, B. K. Nandi, S. K. Nayak, T. K. Nayak, J. M. Nelson, P. Nevski, V. A. Nikitin, L. V. Nogach, B. Norman, S. B. Nurushev, G. Odyniec, A. Ogawa, V. Okorokov, M. Oldenburg, D. Olson, G. Paic, S. U. Pandey, S. K. Pal, Y. Panebratsev, S. Y. Panitkin, A. I. Pavlinov, T. Pawlak, V. Perevoztchikov, C. Perkins, W. Peryt, V. A. Petrov, S. C. Phatak, R. Picha, M. Planinic, J. Pluta, N. Porile, J. Porter, A. M. Poskanzer, M. Potekhin, E. Potrebenikova, B. V. K. S. Potukuchi, D. Prindle, C. Pruneau, J. Putschke, G. Rai, G. Rakness, R. Raniwala, S. Raniwala, O. Ravel, R. L. Ray, S. V. Razin, D. Reichhold, J. G. Reid, G. Renault, F. Retiere, A. Ridiger, H. G. Ritter, J. B. Roberts, O. V. Rogachevski, J. L. Romero, A. Rose, C. Roy, L. J. Ruan, R. Sahoo, I. Sakrejda, S. Salur, J. Sandweiss, I. Savin, J. Schambach, R. P. Scharenberg, N. Schmitz, L. S. Schroeder, K. Schweda, J. Seger, D. Seliverstov, P. Seyboth, E. Shahaliev, M. Shao, M. Sharma, K. E. Shestermanov, S. S. Shimanskii, R. N. Singaraju, F. Simon, G. Skoro, N. Smirnov, R. Snellings, G. Sood, P. Sorensen, J. Sowinski, H. M. Spinka, B. Srivastava, S. Stanislaus, R. Stock, A. Stolpovsky, M. Strikhanov, B. Stringfellow, C. Struck, A. A. P. Suaide, E. Sugarbaker, C. Suire, M. Šumbera, B. Surrow, T. J. M. Symons, A. Szanto de Toledo, P. Szarwas, A. Tai, J. Takahashi, A. H. Tang, D. Thein, J. H. Thomas, V. Tikhomirov, M. Tokarev, M. B. Tonjes, T. A. Trainor, S. Trentalange, R. E. Tribble, M. D. Trivedi, V. Trofimov, O. Tsai, T. Ullrich, D. G. Underwood, G. Van Buren, A. M. VanderMolen, A. N. Vasiliev, M. Vasiliev, S. E. Vigdor, Y. P. Viyogi, S. A. Voloshin, W. Waggoner, F. Wang, G. Wang, X. L. Wang, Z. M. Wang, H. Ward, J. W. Watson, R. Wells, G. D. Westfall, C. Whitten, H. Wieman, R. Willson, S. W. Wissink, R. Witt, J. Wood, J. Wu, N. Xu, Z. Xu, Z. Z. Xu, E. Yamamoto, P. Yepes, V. I. Yurevich, Y. V. Zanevski, I. Zborovský, H. Zhang, W. M. Zhang, Z. P. Zhang, P. A. Żołnierczuk, R. Zoulkarneev, J. Zoulkarneeva, and A. N. Zubarev

Subjects
010308 nuclear & particles physics, 0103 physical sciences, General Physics and Astronomy, 010306 general physics, 01 natural sciences
Published
2004

14. Azimuthal anisotropy at the relativistic heavy ion collider: The first and fourth harmonics

Author

R. Wells, M. Castro, M. R. Dutta Majumdar, I. Sakrejda, G. Eppley, J. Engelage, John N. Wood, S. M. Guertin, Alexandre Alarcon Do Passo Suaide, H. Bichsel, G. Odyniec, V. Trofimov, Xu Cai, J. Pluta, D. P. Mahapatra, Zhongyukun Xu, M. Potekhin, Hao-Ze Chen, N. Schmitz, M. Calderon De La Barca Sanchez, E. Sugarbaker, E. Shahaliev, M. L. Miller, Yu Chen, David Lynn, Premomoy Ghosh, J. M. Landgraf, Z. Liu, K. Schweda, P. Szarwas, T. S. McShane, Zhenyu Zhang, C-Q. Li, R. P. Scharenberg, D. Seliverstov, R. E. Tribble, F. Meissner, S. Mahajan, J. G. Ma, P. A. Żołnierczuk, Q. Li, Joseph Adams, M. Strikhanov, Peter Martin Jacobs, C. Roy, H. M. Spinka, Gerald W Hoffmann, H. S. Matis, Michal Sumbera, G. Renault, V. A. Nikitin, C. Suire, Gang Wang, Marcelo Gameiro Munhoz, D. Magestro, I. Zborovský, D. J. Prindle, X. L. Wang, C. P. Lansdell, R.J.M. Snellings, R. N. Singaraju, W. W. Jacobs, V. Faine, H. Zhang, K. E. Shestermanov, A. P. Meschanin, M. A. C. Lamont, S. B. Nurushev, Z. Milosevich, S. C. Phatak, D. A. Morozov, M. A. Lisa, J. Lauret, E. Yamamoto, J. W. Harris, E. Hjort, J. Castillo, G. Skoro, C. Perkins, W. J. Dong, Christina Markert, S. W. Wissink, D. Thein, J. Sandweiss, A. Klyachko, L. Molnar, S. Stanislaus, M. Kopytine, J. Fu, H. Ward, B. V.K.S. Potukuchi, Yu-Gang Ma, A. Ridiger, Thorsten Sven Kollegger, S. V. Razin, Manish Sharma, Vladimir Petrov, J. Carroll, M. D. Trivedi, M. Tokarev, S. P. Chernenko, W. J. Llope, H. G. Ritter, S. K. Nayak, S. Heppelmann, H. Z. Huang, Lianshou Liu, D. Flierl, Sergey Voloshin, C. A. Gagliardi, Z. Xu, Y. P. Viyogi, Vladimir Tikhomirov, B. D. Anderson, Julien Faivre, V. Ghazikhanian, A. Rose, E. Gushin, G. J. Kunde, P. Yepes, V. Eckardt, Anik Gupta, L. Martin, Adam Ryszard Kisiel, R. Bellwied, K. J. Foley, A. V. Brandin, L. Gaudichet, T. Herston, C. O. Blyth, R. S. Longacre, M. Heinz, Lee Stuart Barnby, J. Kiryluk, B. Lasiuk, H. Long, R. V. Cadman, J. E. Gonzalez, Bedangadas Mohanty, D. D. Koetke, Jianhong Wu, A. Billmeier, C. Struck, H. J. Crawford, J. L. Romero, H. H. Wieman, J. Takahashi, J. Putschke, J. W. Watson, P. Chaloupka, J. G. Cramer, J. E. Draper, B. Norman, A. Kumar, B. Choi, F. Du, Debasish Das, Raghunath Sahoo, S. E. Vigdor, Christian Claude Kuhn, A. Ogawa, Shengli Huang, Thomas A. Trainor, Jay Roberts, Frank Jm Geurts, L. K. Mangotra, J. Baudot, J. P. Coffin, O. V. Rogachevski, Morton Kaplan, Y. V. Zanevski, Alexander Kovalenko, L. V. Nogach, A. H. Tang, Guy Paic, T. Dietel, E. Finch, G. Igo, J. Zoulkarneeva, Mirko Planinic, R. Fatemi, M. Lopez-Noriega, R. Manweiler, A. Chikanian, S. S. Shimanskii, B. Surrow, A. M. Poskanzer, V. I. Kravtsov, W. A. Love, K. Krueger, T. W. Henry, M. Kramer, C. L. Kunz, C. Mironov, D. K. Mishra, D. Reichhold, G. Rakness, A. Boucham, R. Picha, Y. Fisyak, D. Arkhipkin, P. Sorensen, L. C. Bland, S. Bekele, A. I. Pavlinov, W. T. Waggoner, E. G. Judd, Madan M. Aggarwal, Fuqiang Wang, C. F. Moore, M. Oldenburg, A. Ishihara, T. J. Humanic, M. Cherney, Ian Johnson, A. A. Kuznetsov, I.A. Savin, N. T. Porile, Thomas Michael Cormier, P. Nevski, H. Jiang, G. Van Buren, V. I. Yurevich, Basanta Kumar Nandi, Olivier Ravel, Frank Simon, V. A. Okorokov, M. Guedon, A. M. VanderMolen, F. Liu, M. B. Tonjes, Yu A. Matulenko, M. Horsley, A. K. Dubey, Souvik Das, T. W. Ludlam, J. M. Nelson, R. Witt, B. Stringfellow, P. Seyboth, W. Peryt, S. U. Pandey, V. Morozov, V. Yu Khodyrev, B. K. Srivastava, J. Gans, S. Bhardwaj, Boris Hippolyte, J. C. Dunlop, Zubayer Ahammed, M. J. LeVine, T. D. Gutierrez, D. Hardtke, S. K. Badyal, R. D. Majka, L. S. Schroeder, Z. M. Wang, S. Margetis, J. Schambach, W. Christie, A. I. Kulikov, Masashi Kaneta, W. M. Zhang, Andrey Vasiliev, M. Shao, Janet Elizabeth Seger, A. Lebedev, M. M. de Moura, M. Botje, N.D. Gagunashvili, Sukalyan Chattopadhyay, M. S. Ganti, V. Perevoztchikov, K. Filimonov, Sergey Panitkin, A. S. Hirsch, P. Kravtsov, C. Adler, Jeffrey G. Reid, J. Sowinski, V. Grigoriev, R. L. Ray, E. Potrebenikova, T. Ljubicic, H. Caines, Sudhir Raniwala, J. Balewski, Rashmi Raniwala, Claude Andre Pruneau, T. Ullrich, R. Zoulkarneev, S. Kabana, B. I. Bezverkhny, O. A. Grachov, X. Dong, A. Bravar, S. K. Pal, Matthew J. Anderson, J. H. Thomas, R. Lednický, G. S. Averichev, R. Willson, D. G. Underwood, Lijuan Ruan, Q. J. Liu, T. J. Hallman, T. J. M. Symons, R.Kh. Kutuev, J. Berger, F. Retiere, N. G. Minaev, V. B. Dunin, B. Erazmus, N. Xu, D. Cebra, S. Trentalange, P. Filip, M. Estienne, Yu Melnick, G. D. Westfall, Malgorzata Anna Janik, F. Laue, A. Szanto de Toledo, T. Pawlak, J. Porter, P. Bhaskar, C. A. Whitten, M. J. Mora-Corral, S. Lange, S. J. Lindenbaum, Marie Germain, A. N. Zubarev, M. Messer, P. Fachini, V. V. Belaga, Peter Graham Jones, L. Didenko, S. R. Klein, O. Barannikova, D. L. Olson, A. A. Derevschikov, Y. Panebratsev, D. Grosnick, G. Rai, A. Tai, G. Sood, J. Amonett, J. Klay, V. Emelianov, A. K. Bhati, D. Keane, S. Gronstal, Nikolai Smirnov, R. Stock, J. Mitchell, L. G. Efimov, T. K. Nayak, B. E. Bonner, O. D. Tsai, J. Marx, M. A. Vasiliev, Sevil Salur, A. Stolpovsky, L. Kotchenda, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Laboratoire SUBATECH Nantes (SUBATECH), Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and STAR

Subjects
Physics, Time projection chamber, 010308 nuclear & particles physics, Plane (geometry), Elliptic flow, General Physics and Astronomy, Particle accelerator, 01 natural sciences, law.invention, Nuclear physics, Azimuth, law, Harmonics, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], 0103 physical sciences, Atomic physics, time projection chamber, nuclear collisions, collective flow, star, energies, 010306 general physics, Anisotropy, Relativistic Heavy Ion Collider, Nuclear Experiment
Abstract

We report the first observations of the first harmonic (directed flow, v(1)) and the fourth harmonic (v(4)), in the azimuthal distribution of particles with respect to the reaction plane in Au+Au collisions at the BNL Relativistic Heavy Ion Collider (RHIC). Both measurements were done taking advantage of the large elliptic flow (v(2)) generated at RHIC. From the correlation of v(2) with v(1) it is determined that v(2) is positive, or in-plane. The integrated v(4) is about a factor of 10 smaller than v(2). For the sixth (v(6)) and eighth (v(8)) harmonics upper limits on the magnitudes are reported.

Published
2004

15. Net charge fluctuations inAu+Aucollisions atsNN=130GeV

Author

A. Stolpovsky, L. Kotchenda, P. Bhaskar, M. Castro, C. A. Whitten, R. S. Longacre, M. J. Mora-Corral, S. Lange, Anik Gupta, J. H. Thomas, Y. Panebratsev, S. M. Guertin, Jianhong Wu, Frank Jm Geurts, S. J. Lindenbaum, Debasish Das, Raghunath Sahoo, D. P. Mahapatra, D. Grosnick, G. Rai, G. Renault, R. Lednický, Yu Chen, N. Xu, P. Filip, G. Igo, J. Zoulkarneeva, M. Heinz, Lee Stuart Barnby, G. D. Westfall, Malgorzata Anna Janik, W. T. Waggoner, F. Retiere, V. V. Belaga, S. B. Nurushev, G. S. Averichev, N. G. Minaev, H. Bichsel, G. Odyniec, G. Rakness, A. Lebedev, D. Thein, A. H. Tang, P. Sorensen, C. Mironov, Y. Fisyak, Zhongyukun Xu, M. Potekhin, A. Ridiger, L. C. Bland, Peter Graham Jones, Guy Paic, A. Chikanian, S. S. Shimanskii, B. E. Bonner, Ian Johnson, J. Balewski, Rashmi Raniwala, Lianshou Liu, W. A. Love, O. D. Tsai, I. Sakrejda, M. Kopytine, J. Fu, J. Marx, E. G. Judd, L. Didenko, S. Heppelmann, H. M. Spinka, David Lynn, D. Flierl, Claude Andre Pruneau, M. Tokarev, Adam Ryszard Kisiel, M. Botje, T. Ullrich, M. L. Miller, A. A.P. Suaide, Vitaly Okorokov, Hao-Ze Chen, H. J. Crawford, M. A. Vasiliev, L. Martin, C. Struck, P. Szarwas, R. Zoulkarneev, A. Boucham, D. Reichhold, B. D. Anderson, Michal Sumbera, A. I. Pavlinov, Julien Faivre, Sevil Salur, A. A. Kuznetsov, A. S. Hirsch, H. H. Wieman, A. Tai, P. Kravtsov, F. Liu, M. B. Tonjes, D. Arkhipkin, A. V. Brandin, S. Kabana, C. Suire, G. Sood, R. Fatemi, J. Takahashi, J. Putschke, J. W. Watson, C. A. Gagliardi, V. Morozov, V. Faine, J. Amonett, C. Adler, T. Herston, D. D. Koetke, J. E. Draper, J. Klay, L. K. Mangotra, J. G. Ma, V. M. Leontiev, Olivier Ravel, P. Seyboth, S. E. Vigdor, Christian Claude Kuhn, A. P. Meschanin, J. Castillo, K. Krueger, M. Calderon De La Barca Sanchez, S. W. Wissink, S. Bekele, R. Manweiler, V. Trofimov, Matthew J. Anderson, D. Hardtke, V. Emelianov, A. K. Bhati, Sergey Voloshin, R. D. Majka, Jeffrey G. Reid, A. Ogawa, D. Keane, S. Gronstal, Shengli Huang, B. Surrow, H. Y. Zhang, Nikolai Smirnov, R. Stock, B. I. Bezverkhny, J. Mitchell, J. Sowinski, R. Picha, Z. M. Wang, S. Margetis, J. Schambach, A. M. Poskanzer, J. P. Coffin, O. V. Rogachevski, B. Erazmus, L. G. Efimov, M. M. Moura, O. A. Grachov, X. Dong, R. V. Cadman, K. Filimonov, C-Q. Li, A. Bravar, W. Christie, R. P. Scharenberg, A. Ishihara, H. S. Matis, T. K. Nayak, K. J. Foley, J. E. Gonzalez, A. I. Kulikov, Bedangadas Mohanty, D. Cebra, Vladimir Petrov, S. P. Chernenko, E. Yamamoto, S. Trentalange, Manish Sharma, S. V. Razin, W. M. Zhang, Andrey Vasiliev, L. Gaudichet, E. Sugarbaker, Jinghui Yang, W. W. Jacobs, J. Lauret, M. Cherney, M. Shao, Thomas Michael Cormier, W. J. Llope, A. Cardenas, Yu Melnick, M. D. Trivedi, Madan M. Aggarwal, J. Kiryluk, Fuqiang Wang, S. Mahajan, Q. Li, D. Mishra, M. Oldenburg, L. Molnar, S. R. Klein, Janet Elizabeth Seger, O. Barannikova, D. L. Olson, A. Rose, Rama Narayana Singaraju, Marcelo Gameiro Munhoz, D. J. Prindle, B. Lasiuk, P. Nevski, M. Lopez-Noriega, N.D. Gagunashvili, G. Eppley, Jay Roberts, H. G. Ritter, H. Z. Huang, Basanta Kumar Nandi, H. Ward, M. Kaneta, F. Meissner, Xu Cai, J. Pluta, T. Dietel, Mirko Planinic, J. Baudot, V. I. Yurevich, R. Bellwied, A. S. Konstantinov, Frank Simon, H. Zhang, H. Long, A. A. Derevschikov, Sukalyan Chattopadhyay, M. S. Ganti, T. Kolleger, M. A. Lisa, V. Grigoriev, S. Stanislaus, C. L. Kunz, T. W. Henry, E. Potrebenikova, Y. V. Zanevski, V. A. Nikitin, M. Guedon, A. M. VanderMolen, R. E. Tribble, J. Adams, K. E. Shestermanov, C. F. Moore, A. N. Zubarev, C. Roy, Gerald W Hoffmann, V. Perevoztchikov, M. Messer, T. Ljubicic, H. Caines, Sudhir Raniwala, M. Germain, V. L. Rykov, B. V.K.S. Potukuchi, A. Klyachko, Sergey Panitkin, Yu-Gang Ma, A. K. Dubey, Vladimir Tikhomirov, P. Chaloupka, Souvik Das, D. Magestro, R. Witt, G. Skoro, J. W. Harris, Subrata Pal, B. K. Srivastava, E. Gushin, G. J. Kunde, C. O. Blyth, P. Yepes, V. Eckardt, J. Gans, S. Bhardwaj, Boris Hippolyte, B. Norman, S. U. Pandey, A. E. Yakutin, J. Engelage, J. C. Dunlop, John N. Wood, Zubayer Ahammed, M. J. LeVine, Premomoy Ghosh, J. M. Landgraf, Z. Liu, T. D. Gutierrez, S. K. Badyal, M. Strikhanov, L. S. Schroeder, P.A. Zolnierczuk, Christina Markert, J. Sandweiss, T. S. McShane, Y. P. Viyogi, K. Schweda, R. Wells, T. J. Humanic, R.Kh. Kutuev, J. Berger, M. R. Dutta Majumdar, I.A. Savin, N. T. Porile, N. Schmitz, E. Shahaliev, I. Zborovský, F. Laue, A. Szanto de Toledo, X. L. Wang, E. Hjort, T. Pawlak, J. Porter, J. Carroll, S. K. Nayak, Yu A. Matulenko, M. Horsley, V. Ghazikhanian, B. Stringfellow, Zhongbin Xu, J. L. Romero, V. B. Dunin, G. Van Buren, A. Kumar, E. Finch, B. Choi, R. Willson, D. G. Underwood, Lijuan Ruan, A. Billmeier, F. Du, T. W. Ludlam, Q. J. Liu, Alexander Kovalenko, J. G. Cramer, J. M. Nelson, T. J. Hallman, T. J. M. Symons, L. V. Nogach, W. Peryt, D. Seliverstov, P. Fachini, Peter Martin Jacobs, Gang Wang, M. A. C. Lamont, Z. Milosevich, Zhenyu Zhang, M. Kramer, C. P. Lansdell, R.J.M. Snellings, S. C. Phatak, and Morton Kaplan

Subjects
Physics, Nuclear and High Energy Physics, Range (particle radiation), 010308 nuclear & particles physics, Jet (particle physics), 01 natural sciences, 7. Clean energy, Resonance (particle physics), Charged particle, Hadronization, Nuclear physics, Pion, Pseudorapidity, 0103 physical sciences, Atomic physics, 010306 general physics, STAR detector
Abstract

We present the results of charged particle fluctuations measurements in Au+Au collisions at rootS(NN)=130 GeV using the STAR detector. Dynamical fluctuations measurements are presented for inclusive charged particle multiplicities as well as for identified charged pions, kaons, and protons. The net charge dynamical fluctuations are found to be large and negative providing clear evidence that positive and negative charged p article production is correlated within the pseudorapidity range investigated. Correlations are smaller than expected based on model-dependent predictions for a resonance gas or a quark-gluon gas which undergoes fast hadronization and freeze-out. Qualitative agreement is found with comparable scaled p+p measurements and a heavy ion jet interaction generation model calculation based on independent particle collisions, although a small deviation from the 1/N scaling dependence expected from this model is observed.

Published
2003

16. Star detector overview

Author

L. V. Nogach, A. Stolpovsky, H. Hümmler, L. Kotchenda, P. Seyboth, T. Krupien, D. Dayton, V. A. Nikitin, C.J. Liaw, J.F. Amsbaugh, M. Castro, K. E. Shestermanov, A. R. Baldwin, M. Calderon De La Barca Sanchez, Matthew Nguyen, T. Dietel, D.E. Greiner, A. Lebedev, J. Schambach, C. P. McParland, J. Gross, S. Pirogov, R. Seymour, S. Bennett, F. Liu, L. Lakehal-Ayat, D. Zimmerman, A. Ridiger, W. Christie, R. L. Brown, Q. Li, C. Gojak, A. Hirsch, C. P. Lansdell, I.A. Savin, N. T. Porile, A. Tarchini, Alexandre Alarcon Do Passo Suaide, S. Heppelmann, D. Flierl, V. Perevoztchikov, L. Martin, Vladimir Petrov, B. Miller, M. Dialinas, D. Russ, Yu Chen, N. G. Minaev, Jinghui Yang, S. P. Chernenko, Granville Ott, R. V. Cadman, J. E. Draper, Frank Jm Geurts, Lianshou Liu, C. O. Blyth, H. Diaz, Yu A. Matulenko, W. J. Llope, M. Horsley, T. Nguyen, A. Cardenas, Sergey Voloshin, G. LoCurto, H. G. Ritter, G. Van Buren, Sergey Panitkin, B. Stringfellow, J. Sedlmeir, N. Schmitz, B. Lasiuk, H. Long, K. J. Foley, Wen-Chang Chen, S. R. Klein, H. Fessler, P. Jensen, R. K. Kutuev, M. A. Howe, K. Krueger, C. Struck, W. Deng, J. P. Coffin, D. Shuman, R. Willson, O. Barannikova, D. L. Olson, J. G. Cramer, B. Choi, O. V. Rogachevski, E. Shahaliev, C. Consiglio, L. Smykov, J. Takahashi, J. W. Watson, B. Norman, J. Wirth, R. Bossingham, W. Hunt, Damien Bonnet, J. R. Hall, M. Kopytine, Thomas LeCompte, Gary Westfall, B. D. Anderson, R. Weidenbach, C. E. Allgower, J. M. Nelson, J. Rasson, H. Stroebele, G. C. Harper, D. Reichhold, Q. J. Liu, V. S. Shvetcov, C. A. Whitten, S. Tonse, E. Sugarbaker, B. E. Bonner, Torre Wenaus, Alexander Kovalenko, V. Trofimov, M. Gazdzicki, J. Baudot, E. Platner, T. Ljubicic, Thomas A. Trainor, W. R. Edwards, G. Guilloux, A. I. Kulikov, T. J. Hallman, T. J. M. Symons, Chinh Vu, A. A. Derevschikov, M. Cherney, W. Peryt, P. Kravtsov, C. Adler, O. D. Tsai, P. G. Jones, J. Seger, M. Kramer, J. Engelage, E. Yamamoto, Y. V. Zanevski, S. Lange, I. Zborovský, Thomas Michael Cormier, F. Meissner, D. G. Underwood, Jeffrey G. Reid, S. J. Lindenbaum, I. Polk, S. Bouvier, J. T.M. Chrin, Matthew J. Anderson, Derek L. G. Hill, V. Lindenstruth, Masashi Kaneta, R. P. Scharenberg, John N. Wood, J. H. Thomas, L. Conin, G. Visser, W. M. Zhang, A. Yokosawa, J. Berger, Andrey Vasiliev, G. Eppley, P. Nevski, E. Mogavero, A. H. Tang, J. Marx, J. Sowinski, A. E. Yakutin, M. Burkes, J. W. Harris, D. Padrazo, S. Jacobson, M. I. Ferguson, D. Seliverstov, A. Schüttauf, T. S. McShane, I. Vakula, Malgorzata Anna Janik, H. S. Matis, A. N. Zubarev, C. A. Ogilvie, Z. Liu, M. Beddo, David Fritz, Mikhail Tokarev, J. Wolf, P. A. DeYoung, J. Pluta, J. Meier, I. Flores, M. Messer, A. C. Saulys, Subhasis Chattopadhyay, Nu Xu, J. M. Landgraf, Peter Martin Jacobs, K. Turner, A. V. Brandin, D. Roehrich, B. Erazmus, J. Grabski, P. Fachini, J. Tarzian, G. Koehler, M. Botlo, D. Lynn, H. M. Spinka, E. Gushin, G. J. Kunde, P. Yepes, V. Eckardt, Ma Bloomer, R. Lednicky, H. Caines, Y. Fisyak, A. Ogawa, Ian Johnson, J. Riso, R. Renfordt, Christina Markert, F. Laue, A. Szanto de Toledo, Sevil Salur, N. Bouillo, Z. Milosevich, R. E. Tribble, W. A. Love, A. Vanyashin, G. S. Averichev, S. E. Vigdor, Christian Claude Kuhn, Y. Panebratsev, F. Retiere, V. V. Belaga, H. Ward, S. B. Nurushev, G. S. Mutchler, J. Sandweiss, A. Klyachko, K. Solberg, T. Pawlak, Adam Ryszard Kisiel, Gerald W Hoffmann, D. Grosnick, N.D. Gagunashvili, C. Drancourt, J. Puskar-Pasewicz, G. Rai, J. Lin, P. Sorensen, H. Wieman, J. Porter, K. Bradley, S. U. Pandey, M. Germain, G. Brugalette, A. I. Pavlinov, L. G. Efimov, M. B. Tonjes, Richard C. Jared, Salahuddin Ahmad, E. G. Judd, F. S. Bieser, M. Schulz, K. Schweda, D. Cebra, S. Trentalange, Michael A. Thompson, V. Morozov, I. Sakrejda, B. Minor, T. Ullrich, A. Tai, L. Didenko, A. Khodinov, R. Maier, J. Amonett, Yu Melnick, Morton Kaplan, J. Klay, M. DeMello, D. Hardtke, M. Oldenburg, R. D. Majka, M. M. de Moura, M. L. Miller, V. Emelianov, D. Keane, Michal Sumbera, H. Z. Huang, Nikolai Smirnov, N. Stone, R. Stock, R. Bellwied, J. Mitchell, P. Szarwas, A. S. Konstantinov, William Jacobs, K. H. Ackermann, Yu. Ivanshin, K. Filimonov, L. C. Bland, H. Bichsel, Hank Crawford, C. Suire, D. M. Moltz, R. S. Longacre, P. Middlekamp, A. A. Kuznetsov, V. M. Leontiev, Olivier Ravel, A. Etkin, J. Whitfield, V. Faine, L. Arnold, G. Skoro, M. Heffner, J. Castillo, S. W. Wissink, R. Sanchez, J. Dioguardi, V. A. Moiseenko, Marcelo Gameiro Munhoz, D. J. Prindle, H. Zhang, J. Hunter, E. J. Stephenson, M. A. Lisa, B. Srivastava, M. Lopez-Noriega, W. Betts, Lee Stuart Barnby, Z. Sandler, Ivan Kotov, M. A.C. Lamont, T. Noggle, G. Igo, G. Odyniec, C. A. Gagliardi, J. Bercovitz, T. Herston, J. Scheblien, A. P. Meschanin, T. Nussbaum, Daniel Ferenc, Fuqiang Wang, Joakim Nystrand, R. A. Scheetz, V. I. Yurevich, J. Boehm, C. Roy, F. P. Brady, T. Eggert, E. Hjort, Thomas Humanic, P. Kuczewski, K. Olchanski, J. Wisdom, J. Carroll, Vladimir Tikhomirov, S. Margetis, R. Wells, C. Feliciano, L. Greiner, A. Ishihara, Ross Schlueter, D. DiMassimo, E. Anderssen, V. A. Okorokov, M. Guedon, A. M. VanderMolen, V. Ghazikhanian, Guy Paic, A. Chikanian, S. S. Shimanskii, A. Boucham, Zhongbin Xu, V. B. Dunin, W. J. Leonhardt, S. Bekele, Peter J. Lindstrom, E. Finch, R. Witt, J. Fu, I. M. Vasilevski, Lincoln D. Carr, J. Gans, Boris Hippolyte, J. C. Dunlop, Zubayer Ahammed, M. J. LeVine, L. S. Schroeder, S. V. Razin, M. Strikhanov, L. Gaudichet, J. L. Romero, K. Wilson, J. Kiryluk, W. Pinganaud, Jay Roberts, N. Adams, C. L. Kunz, C. F. Moore, V. Grigoriev, R. L. Ray, E. Potrebenikova, V. L. Rykov, Raimond Snellings, J. Balewski, Claude Andre Pruneau, H. Arnesen, R. Zoulkarneev, A. M. Poskanzer, D. D. Weerasundara, Mingshui Chen, M. Grau, I. Danilov, O. A. Grachov, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Laboratoire SUBATECH Nantes (SUBATECH), Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), STAR, and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes)

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Elliptic flow, Star (graph theory), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Particle detector, Nuclear physics, Electromagnetic calorimeter, relativistic heavy ions, tracking detectors, electromagnetic calorimeters, gas detectors, silicon detectors, plus au collisions, root-s(nn)=130 gev, au+au collisions, elliptic flow, tpc, 0103 physical sciences, Quark–gluon plasma, Measuring instrument, Astrophysics::Solar and Stellar Astrophysics, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, 010306 general physics, Instrumentation, Astrophysics::Galaxy Astrophysics, STAR detector
Abstract

An introduction to the STAR detector and a brief overview of the physics goals of the experiment are presented. (C) 2002 Elsevier Science B.V. All rights reserved.

Published
2003

17. Three-pion Hanbury Brown-Twiss Correlations in Relativistic Heavy-Ion collisions from the STAR experiment

Author

A. M. Vander Molen, E. Hjort, R. Fatemi, A. Ridiger, C. O. Blyth, Thorsten Sven Kollegger, D. Reichhold, K. Krueger, A. I. Pavlinov, A. Stolpovsky, F. Liu, M. B. Tonjes, J. Carroll, V. Morozov, L. Kotchenda, B. Erazmus, J. Balewski, R. Picha, Claude Andre Pruneau, R. L. Ray, E. Potrebenikova, C. E. Allgower, S. Heppelmann, D. Flierl, D. Hardtke, T. Ullrich, T. Ljubicic, H. Caines, R. Zoulkarneev, V. L. Rykov, R. D. Majka, M. Castro, E. Yamamoto, L. Martin, Lianshou Liu, V. Ghazikhanian, M. Calderon De La Barca Sanchez, M. Cherney, D. Cebra, D. L. Olson, S. Kabana, Sergey Timoshenko, B. Norman, S. Margetis, J. Schambach, Thomas Michael Cormier, J. E. Draper, Zhongbin Xu, V. V. Belaga, S. Trentalange, P. Nevski, Yu Melnick, J. L. Romero, O. A. Grachov, A. Bravar, A. I. Kulikov, Julien Faivre, C. Struck, P. Chaloupka, M. Heinz, Lee Stuart Barnby, Morton Kaplan, J. Takahashi, J. Putschke, E. Finch, Q. Li, J. P. Coffin, O. V. Rogachevski, S. M. Guertin, V. B. Dunin, Masashi Kaneta, W. M. Zhang, Joseph Adams, Andrey Vasiliev, A. V. Brandin, P. Sorensen, J. W. Watson, J. Engelage, Marcelo Gameiro Munhoz, D. J. Prindle, John N. Wood, A. P. Meschanin, Peter Graham Jones, I. Johnson, D. Magestro, M. Anderson, B. E. Bonner, Janet Elizabeth Seger, F. Laue, A. Szanto de Toledo, H. Zhang, V. I. Yurevich, Guy Paic, A. Chikanian, Thomas A. Trainor, R. V. Cadman, E. Sugarbaker, E. J. Stephenson, Michael A. Thompson, C. A. Whitten, S. E. Vigdor, J. M. Landgraf, Z. Liu, R. Wells, J. W. Harris, Yaguo Wang, Yu Chen, H. G. Ritter, G. Skoro, L. Didenko, M. A. Lisa, Jinghui Yang, M. Planinic, A. Lebedev, Michal Sumbera, T. Pawlak, T. Dietel, T. D. Gutierrez, M. Strikhanov, H. Z. Huang, P. Fachini, S. S. Shimanskii, V. A. Nikitin, S. Lange, O. D. Tsai, Christian Claude Kuhn, H. Bichsel, R. Bellwied, F. Meissner, E. Gushin, G. J. Kunde, Frank Jm Geurts, C. Suire, P. Yepes, V. Eckardt, Adam Ryszard Kisiel, M. Botje, W. Christie, Peter Martin Jacobs, G. Odyniec, J. Porter, S. J. Lindenbaum, Christina Markert, A. S. Konstantinov, N. Xu, V. Faine, I. Zborovský, K. E. Shestermanov, Sergey Voloshin, S. R. Klein, L. C. Bland, A. A.P. Suaide, H. J. Crawford, J. Castillo, D. Arkhipkin, K. J. Foley, S. W. Wissink, V. Perevoztchikov, O. Barannikova, H. M. Spinka, J. Sandweiss, A. M. Poskanzer, David Lynn, G. Renault, J. Marx, R.Kh. Kutuev, G. D. Westfall, J. Berger, R. S. Longacre, W. A. Love, N. Schmitz, B. Surrow, T. W. Henry, M. A. C. Lamont, S. B. Nurushev, Z. Milosevich, S. Bekele, A. A. Derevschikov, E. Shahaliev, J. H. Thomas, G. Van Buren, Malgorzata Anna Janik, Sergey Panitkin, M. L. Miller, J. Baudot, V. M. Leontiev, Olivier Ravel, R. P. Scharenberg, Marie Germain, D. Thein, Yu-Gang Ma, Fuqiang Wang, M. Mora Corral, A. H. Tang, A. Ishihara, R. Lednický, Y. V. Zanevski, B. Choi, J. G. Ma, H. S. Matis, M. Kopytine, Subhasis Chattopadhyay, T. W. Ludlam, M. Tokarev, A. N. Zubarev, J. M. Nelson, B. D. Anderson, I. Sakrejda, Alexander Kovalenko, W. W. Jacobs, M. Messer, R. Willson, D. G. Underwood, G. S. Averichev, J. Lauret, L. V. Nogach, M. Vznuzdaev, M. Lopez-Noriega, G. Igo, J. Zoulkarneeva, W. Peryt, V. Trofimov, S. U. Pandey, Sevil Salur, A. E. Yakutin, Frank Simon, L. Gaudichet, F. Retiere, R. Witt, L. Molnar, Q. J. Liu, H. H. Wieman, M. M. de Moura, N. G. Minaev, V. A. Okorokov, T. J. Hallman, M. Guedon, Y. Fisyak, T. J. M. Symons, A. Ogawa, N.D. Gagunashvili, A. Tai, H. Ward, C. Roy, G. Eppley, J. Amonett, P. Szarwas, Vladimir Petrov, G. Rakness, C. A. Gagliardi, S. P. Chernenko, W. J. Llope, A. A. Kuznetsov, T. Herston, C. P. Lansdell, J. Klay, R.J.M. Snellings, J. Fu, B. K. Srivastava, A. Boucham, M. Oldenburg, A. Cardenas, Xu Cai, A. Rose, V. Emelianov, D. Keane, A. S. Hirsch, P. Kravtsov, C. Adler, B. Lasiuk, H. Long, J. Gans, J. Pluta, Nikolai Smirnov, E. G. Judd, R. Stock, Boris Hippolyte, J. Mitchell, A. Klyachko, L. G. Efimov, Jeffrey G. Reid, J. Sowinski, S. V. Razin, K. Filimonov, J. Kiryluk, Jay Roberts, Y. Panebratsev, R. E. Tribble, P. Seyboth, G. Rai, C. L. Kunz, Gerald W Hoffmann, C. F. Moore, J. C. Dunlop, Zubayer Ahammed, M. J. LeVine, L. S. Schroeder, A. Billmeier, J. G. Cramer, M. Kramer, T. J. Humanic, I.A. Savin, N. T. Porile, Yu A. Matulenko, M. Horsley, B. Stringfellow, T. S. McShane, K. Schweda, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Laboratoire SUBATECH Nantes (SUBATECH), Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), STAR, and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes)

Subjects
Physics, Particle physics, 010308 nuclear & particles physics, Nuclear Theory, Hanbury Brown and Twiss effect, General Physics and Astronomy, FOS: Physical sciences, interferometry, 01 natural sciences, Nuclear physics, Pion, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], 0103 physical sciences, Heavy ion, High Energy Physics::Experiment, Multiplicity (chemistry), Nuclear Experiment (nucl-ex), 010306 general physics, National laboratory, Nuclear Experiment
Abstract

Data from the first physics run at the Relativistic Heavy-Ion Collider at Brookhaven National Laboratory, Au+Au collisions at $\sqrt{s_{NN}}=130$ GeV, have been analyzed by the STAR Collaboration using three-pion correlations with charged pions to study whether pions are emitted independently at freezeout. We have made a high-statistics measurement of the three-pion correlation function and calculated the normalized three-particle correlator to obtain a quantitative measurement of the degree of chaoticity of the pion source. It is found that the degree of chaoticity seems to increase with increasing particle multiplicity., 6 pages, 4 figures, published in PRL

Published
2003

18. Centrality Dependence of High-pTHadron Suppression inAu+AuCollisions atsNN=130 GeV

Author

Joram Berger, A. C. Saulys, E. Sugarbaker, H. Z. Huang, A. Stolpovsky, A. S. Hirsch, P. M. Jacobs, P. Kravtsov, C. Adler, H. Bichsel, C. E. Allgower, B. E. Bonner, David Lynn, F. Meissner, M. Cherney, R. S. Longacre, Julien Faivre, J. G. Ma, L. Kotchenda, O. D. Tsai, Thomas Michael Cormier, A. V. Brandin, P. Nevski, R. V. Cadman, J. Kiryluk, Jeffrey G. Reid, V. A. Moiseenko, I.A. Savin, Marcelo Gameiro Munhoz, D. J. Prindle, B. Lasiuk, E. J. Stephenson, M. A. Lisa, N. T. Porile, Fuqiang Wang, Rajarshi Ray, VL Rykov, S. E. Vigdor, M. Castro, Jinghui Yang, A. Ishihara, Frank Jm Geurts, P. Seyboth, Christian Claude Kuhn, G. Igo, M. Oldenburg, J. L. Klay, B. Erazmus, V. Petrov, J. W. Mitchell, Yu A. Matulenko, Gerd Joachim Kunde, D. Cebra, Yu Melnick, P. Sorensen, M. Horsley, J. Balewski, W. Christie, B. Stringfellow, Claude Andre Pruneau, G. Eppley, V. I. Yurevich, S. R. Klein, A. Ridiger, O. Barannikova, D. L. Olson, Sevil Salur, Saurabh Pandey, A. I. Kulikov, Masashi Kaneta, A. A. Derevschikov, S. Heppelmann, D. Flierl, V. V. Belaga, W. M. Zhang, Sukalyan Chattopadhyay, Andrey Vasiliev, L. Martin, T. Ullrich, T. J. Hallman, R. Witt, Y. Panebratsev, G. Rai, R. Zoulkarneev, H. Zhang, Vitaly Okorokov, Bernd Surrow, C. P. Lansdell, R.J.M. Snellings, Peter Graham Jones, J. G. Cramer, N. Schmitz, T. W. Henry, E. Shahaliev, L. C. Bland, E. G. Judd, J. Engelage, J. Pluta, G. Van Buren, V. Perevoztchikov, K. Filimonov, K. Schweda, Rene Bellwied, Yu Chen, L. Didenko, Marie Germain, I. Sakrejda, A. E. Yakutin, M. Calderon De La Barca Sanchez, B. K. Srivastava, J. P. Coffin, O. V. Rogachevski, A. N. Zubarev, E. Hjort, M. Messer, John N. Wood, Michael Kramer, I. Zborovský, V. Grigoriev, R. E. Tribble, Gerald W Hoffmann, M. Guedon, A. M. Poskanzer, A. M. VanderMolen, Russell Wells, C. Roy, I. M. Vasilevski, J. Gans, A. P. Meschanin, C. A. Gagliardi, Janet Elizabeth Seger, Michael A. Thompson, Michal Sumbera, A. A. P. Suaide, G. Renault, T. S. McShane, Q. Li, G. Skoro, P. Fachini, Gregory Rakness, M. L. Miller, T. W. Ludlam, H. M. Spinka, V. Faine, Boris Hippolyte, A. Klyachko, E. Potrebenikova, J. Castillo, L. Lakehal-Ayat, A. I. Pavlinov, S. W. Wissink, T. Herston, J. M. Nelson, Lee Stuart Barnby, J. M. Landgraf, F. Liu, B. Choi, P. Szarwas, M. B. Tonjes, S. V. Razin, M. Kopytine, J. Fu, Y. Fisyak, L. Gaudichet, Vladimir Tikhomirov, V. Morozov, Ian Johnson, A. Szanto de Toledo, T. Ljubicic, P. Chaloupka, Thomas Dietel, V. Ghazikhanian, W. Peryt, N.D. Gagunashvili, Sergey Voloshin, J. W. Harris, M. Tokarev, M. Strikhanov, Alexander Kovalenko, J. E. Draper, L. V. Nogach, D. Hardtke, F. Laue, K. J. Foley, B. D. Anderson, S. Trentalange, J. H. Thomas, H. Caines, Jay Roberts, R. D. Majka, J. Sowinski, A. A. Kuznetsov, S. Y. Panitkin, W. S. Deng, Guy Paic, A. Chikanian, J. L. Romero, S. S. Shimanskii, J. N. Marx, E. Yamamoto, J. Schambach, Christophe Pierre Suire, E. Gushin, P. Yepes, V. Eckardt, A. Billmeier, G. Odyniec, J. Sandweiss, Z. Liu, E. Finch, C. L. Kunz, K. Krueger, C. F. Moore, A. Boucham, T. J. Humanic, A. H. Tang, T. Pawlak, C. Struck, S. Bekele, J. Baudot, W. A. Love, Morton Kaplan, M. Lopez-Noriega, S. P. Chernenko, A. Lebedev, Y. V. Zanevski, M. M. de Moura, W. J. Llope, J. C. Dunlop, C. O. Blyth, A. Cardenas, Zubayer Ahammed, H. H. Wieman, M. J. LeVine, G. S. Averichev, S. Margetis, H. Long, D. Seliverstov, A. Schüttauf, O. A. Grachov, B. Norman, L. S. Schroeder, R.Kh. Kutuev, J. Porter, J. Takahashi, A. Bravar, M. A. C. Lamont, S. B. Nurushev, Z. Milosevich, R. Lednický, V. A. Nikitin, V. B. Dunin, K. E. Shestermanov, Mirko Planinic, Michael W. Anderson, R. Willson, D. G. Underwood, Adam Ryszard Kisiel, J. B. Carroll, H. J. Crawford, D. Reichhold, T. J. M. Symons, Z. Z. Xu, Nikita Smirnov, A. Tai, J. Amonett, V. Emelianov, D. Keane, R. Stock, L. G. Efimov, Yu. Ivanshin, J. Putschke, J. W. Watson, A. Ogawa, Thomas A. Trainor, R. P. Scharenberg, Christina Markert, V. S. Shvetcov, Q. J. Liu, H. S. Matis, C. A. Whitten, W. W. Jacobs, A. Rose, S. Lange, J. Lauret, S. J. Lindenbaum, N. Xu, G. D. Westfall, H. Ward, Malgorzata Anna Janik, F. Retiere, N. G. Minaev, L. Liu, V. M. Leontiev, Olivier Ravel, G. LoCurto, H. G. Ritter, A. S. Konstantinov, and V. Trofimov

Subjects
Physics, High energy, Particle physics, 010308 nuclear & particles physics, Nuclear Theory, Hadron, General Physics and Astronomy, 01 natural sciences, 0103 physical sciences, Transverse momentum, Production (computer science), Nuclear Experiment, 010306 general physics, Centrality
Abstract

Inclusive transverse momentum distributions of charged hadrons within $0.2l{p}_{T}l6.0\text{ }\mathrm{G}\mathrm{e}\mathrm{V}/c$ have been measured over a broad range of centrality for $\mathrm{A}\mathrm{u}+\mathrm{A}\mathrm{u}$ collisions at $\sqrt{{s}_{NN}}=130\text{ }\text{ }\mathrm{G}\mathrm{e}\mathrm{V}$. Hadron yields are suppressed at high ${p}_{T}$ in central collisions relative to peripheral collisions and to a nucleon-nucleon reference scaled for collision geometry. Peripheral collisions are not suppressed relative to the nucleon-nucleon reference. The suppression varies continuously at intermediate centralities. The results indicate significant nuclear medium effects on high-${p}_{T}$ hadron production in heavy-ion collisions at high energy.

Published
2002

19. Coherent rho^0 Production in Ultra-Peripheral Heavy Ion Collisions

Author

A. Stolpovsky, K. Krueger, Adam Ryszard Kisiel, L. Kotchenda, M. Cherney, Thomas Michael Cormier, P. Nevski, H. J. Crawford, B. E. Bonner, Vitaly Okorokov, O. D. Tsai, V. A. Moiseenko, Marcelo Gameiro Munhoz, D. J. Prindle, H. Zhang, V. I. Yurevich, J. W. Harris, J. Engelage, T. S. McShane, Vladimir Petrov, M. Castro, W. Deng, I. Sakrejda, R. V. Cadman, John N. Wood, Jinghui Yang, Frank Jm Geurts, C. Roy, S. P. Chernenko, W. J. Llope, J. Marx, E. Hjort, A. Cardenas, J. C. Dunlop, Sevil Salur, V. B. Dunin, Alexandre Alarcon Do Passo Suaide, L. C. Bland, M. M. de Moura, J. M. Landgraf, G. LoCurto, E. J. Stephenson, M. A. Lisa, Y. Panebratsev, Z. Liu, I. Zborovský, E. Gushin, G. J. Kunde, Zubayer Ahammed, G. Rai, M. Anderson, P. Yepes, V. Eckardt, O. A. Grachov, Yu Chen, J. Carroll, M. J. LeVine, B. Lasiuk, P. Szarwas, A. Bravar, M. Strikhanov, F. Laue, A. Szanto de Toledo, S. R. Klein, B. D. Anderson, H. Long, M. L. Miller, A. P. Meschanin, C. P. Lansdell, G. Odyniec, V. Ghazikhanian, Subhasis Chattopadhyay, V. M. Leontiev, Olivier Ravel, R.J.M. Snellings, A. V. Brandin, O. Barannikova, J. Amonett, J. Klay, C. A. Gagliardi, M. Oldenburg, J. Balewski, Christina Markert, J. Sandweiss, V. Emelianov, D. Keane, L. S. Schroeder, G. Eppley, T. Pawlak, Nikolai Smirnov, R. Stock, Zhongbin Xu, S. E. Vigdor, Claude Andre Pruneau, J. L. Romero, J. Mitchell, L. G. Efimov, C. Allgower, Joakim Nystrand, Y. Fisyak, David Lynn, Christian Claude Kuhn, A. A. Derevschikov, T. Herston, A. Ogawa, J. Pluta, V. Trofimov, Fuqiang Wang, T. Ullrich, E. Finch, S. V. Razin, Vladimir Tikhomirov, A. Boucham, J. Porter, C. O. Blyth, B. Surrow, J. Kiryluk, R. Zoulkarneev, A. C. Saulys, H. M. Spinka, A. I. Kulikov, D. L. Olson, Jay Roberts, K. Schweda, R. Wells, R. S. Longacre, Masashi Kaneta, R.Kh. Kutuev, J. Berger, J. G. Ma, W. M. Zhang, Guy Paic, A. Chikanian, S. S. Shimanskii, Andrey Vasiliev, R. E. Tribble, A. Tai, V. Grigoriev, J. H. Thomas, G. Igo, A. H. Tang, A. N. Zubarev, N.D. Gagunashvili, L. Lakehal-Ayat, S. U. Pandey, A. E. Yakutin, C. L. Kunz, B. Norman, R. L. Ray, Gerald W Hoffmann, V. A. Nikitin, C. F. Moore, E. Potrebenikova, M. Calderon De La Barca Sanchez, J. G. Cramer, Janet Elizabeth Seger, B. Erazmus, M. Messer, M. Germain, K. E. Shestermanov, N. Xu, S. Bekele, P. Seyboth, H. G. Ritter, R. Lednický, H. Z. Huang, R. Willson, D. Cebra, E. Sugarbaker, Q. Li, D. G. Underwood, H. Ward, A. Ishihara, N. Schmitz, S. Trentalange, T. Ljubicic, A. I. Pavlinov, A. S. Hirsch, A. Lebedev, F. Liu, M. B. Tonjes, Yu Melnick, M. Kramer, E. Shahaliev, P. Kravtsov, C. Adler, H. Caines, V. Morozov, D. Reichhold, Q. J. Liu, G. S. Averichev, R. Bellwied, L. Gaudichet, R. Witt, V. V. Belaga, F. Meissner, G. Rakness, E. G. Judd, A. Klyachko, B. Choi, T. J. Humanic, T. J. Hallman, T. J. M. Symons, V. L. Rykov, A. S. Konstantinov, M. Lopez-Noriega, D. Hardtke, I.A. Savin, R. D. Majka, P. Chaloupka, Jeffrey G. Reid, P. Sorensen, N. T. Porile, E. Yamamoto, J. Sowinski, S. Margetis, J. Schambach, Peter Graham Jones, I. Johnson, Lee Stuart Barnby, Michael A. Thompson, Yu A. Matulenko, M. Guedon, A. M. VanderMolen, J. Fu, Michal Sumbera, M. Horsley, B. Stringfellow, B. K. Srivastava, I. M. Vasilevski, Alexander Kovalenko, L. V. Nogach, L. Didenko, C. Suire, V. Faine, J. Castillo, S. W. Wissink, G. Van Buren, A. Ridiger, J. Gans, Boris Hippolyte, H. Bichsel, S. Heppelmann, D. Flierl, L. Martin, W. Christie, J. E. Draper, V. Perevoztchikov, Sergey Voloshin, T. W. Ludlam, W. A. Love, K. J. Foley, J. P. Coffin, O. V. Rogachevski, Yu. Ivanshin, K. Filimonov, J. M. Nelson, Sergey Panitkin, W. Peryt, T. Dietel, J. Baudot, Y. V. Zanevski, Morton Kaplan, A. M. Poskanzer, G. Skoro, M. Planinic, D. Seliverstov, T. W. Henry, A. Schüttauf, P. Fachini, V. S. Shvetcov, C. A. Whitten, Peter Martin Jacobs, M. Kopytine, M. Tokarev, Lianshou Liu, S. Lange, S. J. Lindenbaum, M. A. C. Lamont, H. H. Wieman, A. A. Kuznetsov, S. B. Nurushev, Z. Milosevich, C. Struck, G. D. Westfall, J. Takahashi, J. Putschke, J. W. Watson, Malgorzata Anna Janik, Thomas A. Trainor, R. P. Scharenberg, H. S. Matis, F. Retiere, W. W. Jacobs, N. G. Minaev, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Laboratoire SUBATECH Nantes (SUBATECH), Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), STAR, and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes)

Subjects
Nuclear reaction, Physics, Particle physics, Meson, 010308 nuclear & particles physics, Nuclear Theory, Hadron, FOS: Physical sciences, General Physics and Astronomy, Elementary particle, Coulomb excitation, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], 0103 physical sciences, Nuclear Experiment (nucl-ex), Impact parameter, 010306 general physics, Nuclear Experiment, Excitation, Boson
Abstract

The STAR collaboration reports the first observation of exclusive rho^0 photo-production, AuAu->AuAu rho^0, and rho^0 production accompanied by mutual nuclear Coulomb excitation, AuAu->Au*Au*rho^0, in ultra-peripheral heavy-ion collisions. The rho^0 have low transverse momenta, consistent with coherent coupling to both nuclei. The cross sections at sqrt(s_NN)=130GeV agree with theoretical predictions treating rho^0 production and Coulomb excitation as independent processes., 6 pages, 5 figures, 2 tables, submitted to Phys. Rev. Lett updated version, one new figure and table

Published
2002

20. Multiplicity Distribution and Spectra of Negatively Charged Hadrons inAu+AuCollisions atsNN=130GeV

Author

W. Christie, J. Amonett, M. DeMello, A. I. Kulikov, Masashi Kaneta, W. M. Zhang, Andrey Vasiliev, M. Oldenburg, I. Sakrejda, A. C. Saulys, V. Emelianov, D. Keane, J. Engelage, Nikolai Smirnov, R. Stock, J. Mitchell, V. Perevoztchikov, M. M. de Moura, Fuqiang Wang, M. L. Miller, Janet Elizabeth Seger, G. S. Mutchler, A. Stolpovsky, H. Hümmler, L. Kotchenda, J. M. Landgraf, Christophe Pierre Suire, L. G. Efimov, A. Ishihara, R. S. Longacre, M. Strikhanov, Yu. Ivanshin, Guy Paic, A. Chikanian, S. S. Shimanskii, Sergey Panitkin, A. A.P. Suaide, A. Boucham, P. Szarwas, S. Bekele, J. Sandweiss, J. Berger, M. Guedon, A. M. VanderMolen, M. Castro, C. Roy, A. Klyachko, Thomas LeCompte, J. W. Harris, A. H. Tang, B. E. Bonner, C. O. Blyth, A. M. Poskanzer, B. Choi, A. V. Brandin, Vladimir Tikhomirov, O. D. Tsai, B. D. Anderson, S. E. Vigdor, S. Trentalange, V. B. Dunin, V. I. Yurevich, H. G. Ritter, A. Lebedev, G. Igo, Frank Jm Geurts, Alexander Kovalenko, A. Vanyashin, W. S. Deng, Adam Ryszard Kisiel, G. Van Buren, H. J. Crawford, Christian Claude Kuhn, A. S. Hirsch, Mingshui Chen, P. Kravtsov, C. Adler, M. Lopez-Noriega, L. V. Nogach, J. G. Cramer, B. Norman, R. Bellwied, G. Skoro, E. Gushin, G. J. Kunde, A. S. Konstantinov, M. Heffner, D. Russ, G. Eppley, R. K. Kutuev, A. Maliszewski, Jeffrey G. Reid, Yu Chen, E. Sugarbaker, B. Erazmus, K. Turner, H. Z. Huang, V. S. Shvetcov, P. Yepes, V. Eckardt, C. A. Whitten, E. Platner, M. Kramer, S. Margetis, Vladimir Petrov, P. Seyboth, S. P. Chernenko, J. Pluta, W. J. Llope, J. M. Nelson, H. Stroebele, O. A. Grachov, A. Yokosawa, F. Laue, Lee Stuart Barnby, D. M. Moltz, A. A. Kuznetsov, J. H. Thomas, L. Conin, J. Castillo, S. W. Wissink, A. Szanto de Toledo, T. S. McShane, F. Meissner, A. I. Pavlinov, M. B. Tonjes, S. Lange, S. J. Lindenbaum, A. Cardenas, Subhasis Chattopadhyay, K. Krueger, V. M. Leontiev, Olivier Ravel, W. Peryt, B. Lasiuk, M. Tokarev, T. Pawlak, Sergey Voloshin, D. Cebra, C. P. Lansdell, R.J.M. Snellings, V. Morozov, Gerald W Hoffmann, J. Grabski, H. Long, C. E. Allgower, M. Cherney, Thomas Michael Cormier, N. Xu, V. Grigoriev, J. Porter, K. J. Foley, N.D. Gagunashvili, K. Schweda, D.E. Greiner, M. Calderón de la Barca Sánchez, D. Hardtke, R. D. Majka, J. Sowinski, R. Lednický, J. N. Marx, Y. Panebratsev, P. Nevski, S. Radomski, Yu Melnick, G. D. Westfall, V. A. Nikitin, G. Rai, R. L. Ray, E. Potrebenikova, K. E. Shestermanov, Malgorzata Anna Janik, J. Schambach, J. Baudot, A. Ridiger, Y. V. Zanevski, T. J. Humanic, R. Willson, I.A. Savin, N. T. Porile, Q. Li, D. G. Underwood, W. A. Love, P. Leszczynski, S. Heppelmann, D. Flierl, T. Ljubicic, E. G. Judd, I. Zborovský, Morton Kaplan, H. H. Wieman, Yu A. Matulenko, M. Šumbera, V. A. Moiseenko, R. Bossingham, L. Martin, H. Caines, M. Horsley, G. S. Averichev, F. Retiere, V. L. Rykov, B. Stringfellow, J. Klay, C. Struck, Vitaly Okorokov, L. Lakehal-Ayat, J. Lamas-Valverde, D. Seliverstov, A. Schüttauf, J. E. Draper, N. G. Minaev, V. Trofimov, Y. Fisyak, Marcelo Gameiro Munhoz, D. J. Prindle, J. Takahashi, A. Ogawa, Ian Johnson, Peter Martin Jacobs, J. W. Watson, J. P. Coffin, O. V. Rogachevski, J. Balewski, M. A. C. Lamont, S. B. Nurushev, Z. Milosevich, Z. Z. Xu, D. Reichhold, Claude Andre Pruneau, Torre Wenaus, T. Herston, T. Ullrich, T. J. Hallman, T. J. M. Symons, Thomas A. Trainor, E. J. Stephenson, R. Zoulkarneev, M. A. Lisa, H. M. Spinka, R. P. Scharenberg, H. S. Matis, W. W. Jacobs, L. C. Bland, H. Ward, H. Bichsel, G. Odyniec, Matthew J. Anderson, S. U. Pandey, A. E. Yakutin, David Lynn, V. V. Belaga, Peter Graham Jones, J. Fu, B. K. Srivastava, I. M. Vasilevski, L. Didenko, J. Gans, Boris Hippolyte, Marie Germain, S. V. Razin, L. Gaudichet, W. Pinganaud, A. N. Zubarev, Jay Roberts, M. Messer, C. L. Kunz, C. F. Moore, Jinghui Yang, R. Witt, E. Yamamoto, G. LoCurto, S. R. Klein, J. C. Dunlop, O. Barannikova, D. L. Olson, Zubayer Ahammed, M. J. LeVine, A. A. Derevschikov, L. S. Schroeder, R. Wells, N. Schmitz, E. Shahaliev, E. Hjort, J. Carroll, V. Ghazikhanian, J. L. Romero, P. Fachini, E. Finch, and A. P. Meschanin

Subjects
Quark, Physics, 010308 nuclear & particles physics, Hadron, General Physics and Astronomy, Elementary particle, 01 natural sciences, Spectral line, Nuclear physics, Pseudorapidity, 0103 physical sciences, High Energy Physics::Experiment, Atomic physics, Multiplicity (chemistry), Nuclear Experiment, 010306 general physics, Scaling, Multiplicity distribution
Abstract

The minimum-bias multiplicity distribution and the transverse momentum and pseudorapidity distributions for central collisions have been measured for negative hadrons (h{sup -}) in Au+Au interactions at s{sub NN}=130 GeV . The multiplicity density at midrapidity for the 5% most central interactions is dN{sub h{sup -}}/d{eta}|{sub {eta}=0} =280{+-}1(stat){+-}20(syst) , an increase per participant of 38% relative to p{bar p} collisions at the same energy. The mean transverse momentum is 0.508{+-}0.012 GeV/c and is larger than in central Pb+Pb collisions at lower energies. The scaling of the h{sup -} yield per participant is a strong function of p{sub {perpendicular}} . The pseudorapidity distribution is almost constant within |{eta}

Published
2001

21. Azimuthal Anisotropy and correlations in the hard scattering regime at RHIC

Author

W. Deng, G. Van Buren, B. D. Anderson, A. Lebedev, C. Roy, T. W. Ludlam, J. M. Nelson, V. S. Shvetcov, C. O. Blyth, J. W. Harris, E. Sugarbaker, B. Erazmus, C. A. Whitten, W. Peryt, A. P. Meschanin, M. Anderson, F. Laue, A. Szanto de Toledo, J. Balewski, P. Seyboth, Claude Andre Pruneau, S. Lange, T. Ullrich, R. Zoulkarneev, D. L. Olson, Vladimir Tikhomirov, A. Boucham, S. J. Lindenbaum, F. Meissner, E. Gushin, G. J. Kunde, P. Yepes, V. Eckardt, Lianshou Liu, D. Cebra, B. Norman, B. E. Bonner, E. Hjort, A. I. Pavlinov, F. Liu, A. Stolpovsky, J. H. Thomas, O. D. Tsai, T. Pawlak, S. Trentalange, M. B. Tonjes, G. Eppley, M. Lopez-Noriega, V. Morozov, L. Kotchenda, V. A. Nikitin, J. Marx, Yu Melnick, J. Porter, Sergey Voloshin, J. Carroll, R. Lednický, Subhasis Chattopadhyay, Malgorzata Anna Janik, D. Hardtke, K. E. Shestermanov, M. Castro, C. Struck, K. J. Foley, Guy Paic, R. D. Majka, A. Chikanian, S. S. Shimanskii, G. Odyniec, Morton Kaplan, M. Calderon De La Barca Sanchez, J. Pluta, C. A. Gagliardi, E. Yamamoto, J. Takahashi, J. Putschke, S. Margetis, J. Schambach, R. S. Longacre, J. W. Watson, Sevil Salur, A. Tai, R. Willson, D. G. Underwood, T. Herston, L. Lakehal-Ayat, V. Ghazikhanian, David Lynn, J. Engelage, J. Amonett, J. C. Dunlop, J. Klay, Lee Stuart Barnby, A. Ridiger, A. I. Kulikov, V. B. Dunin, Alexandre Alarcon Do Passo Suaide, M. Oldenburg, G. S. Averichev, V. Emelianov, D. Keane, Masashi Kaneta, W. M. Zhang, Gary Westfall, L. C. Bland, John N. Wood, Nikolai Smirnov, R. Stock, G. Rakness, R. E. Tribble, J. Mitchell, Andrey Vasiliev, Zhongbin Xu, Thomas A. Trainor, Nu Xu, J. Baudot, L. G. Efimov, S. Heppelmann, D. Flierl, Yu. Ivanshin, K. Filimonov, Marie Germain, Q. Li, Yu Chen, D. Reichhold, Q. J. Liu, Y. V. Zanevski, J. L. Romero, Zubayer Ahammed, G. Igo, S. Bekele, D. Seliverstov, A. Schüttauf, Gerald W Hoffmann, A. C. Saulys, M. J. LeVine, F. Retiere, J. M. Landgraf, Z. Liu, L. Martin, T. J. Hallman, Janet Elizabeth Seger, T. J. M. Symons, Y. Panebratsev, G. Rai, P. Fachini, J. G. Ma, M. L. Miller, R. V. Cadman, T. Dietel, Peter Martin Jacobs, E. G. Judd, A. Klyachko, E. Finch, W. A. Love, N. G. Minaev, V. A. Moiseenko, J. E. Draper, M. Strikhanov, V. M. Leontiev, Olivier Ravel, Marcelo Gameiro Munhoz, D. J. Prindle, Frank Jm Geurts, Andrew S. Hirsch, H. Zhang, V. Trofimov, R. Wells, A. Ishihara, M. A. C. Lamont, S. B. Nurushev, V. I. Yurevich, Z. Milosevich, A. N. Zubarev, E. J. Stephenson, L. S. Schroeder, H. M. Spinka, G. Renault, R.Kh. Kutuev, J. Berger, Fuqiang Wang, Michael A. Thompson, M. A. Lisa, Christina Markert, J. Sandweiss, T. W. Henry, J. P. Coffin, O. V. Rogachevski, Michal Sumbera, M. Messer, S. V. Razin, N.D. Gagunashvili, Vladimir Petrov, B. Choi, C. Suire, J. Kiryluk, V. Faine, S. P. Chernenko, W. J. Llope, G. Skoro, Jay Roberts, J. Castillo, S. W. Wissink, R. P. Scharenberg, Alexander Kovalenko, M. Planinic, A. Cardenas, C. L. Kunz, H. G. Ritter, V. V. Belaga, C. F. Moore, H. S. Matis, H. Z. Huang, A. H. Tang, A. Rose, B. Lasiuk, N. Schmitz, E. Shahaliev, P. Chaloupka, Adam Ryszard Kisiel, S. U. Pandey, A. E. Yakutin, L. V. Nogach, H. Long, P. Sorensen, Peter Graham Jones, I. Johnson, P. Kravtsov, H. J. Crawford, L. Gaudichet, R. Witt, C. Adler, W. W. Jacobs, L. Didenko, J. Fu, B. K. Srivastava, Jinghui Yang, I. M. Vasilevski, Jeffrey G. Reid, V. A. Okorokov, M. Guedon, I. Zborovský, J. Gans, G. LoCurto, J. Sowinski, S. R. Klein, Boris Hippolyte, J. Lauret, O. Barannikova, H. Bichsel, W. Christie, A. M. VanderMolen, A. A. Derevschikov, K. Krueger, V. Perevoztchikov, Sergey Panitkin, Y. Fisyak, A. Ogawa, A. A. Kuznetsov, C. E. Allgower, H. Ward, M. Cherney, Thomas Michael Cormier, P. Nevski, C. P. Lansdell, R.J.M. Snellings, O. A. Grachov, A. Bravar, V. Grigoriev, R. L. Ray, E. Potrebenikova, T. Ljubicic, H. Caines, V. L. Rykov, T. S. McShane, A. M. Poskanzer, M. Kopytine, I. Sakrejda, M. Tokarev, M. M. de Moura, K. Schweda, T. J. Humanic, I.A. Savin, P. Szarwas, H. H. Wieman, N. T. Porile, Julien Faivre, A. V. Brandin, Yu A. Matulenko, M. Horsley, B. Stringfellow, S. E. Vigdor, A. Billmeier, Christian Claude Kuhn, J. G. Cramer, B. Surrow, M. Kramer, R. Bellwied, A. S. Konstantinov, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Laboratoire SUBATECH Nantes (SUBATECH), Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), STAR, and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes)

Subjects
Physics, Nuclear reaction, Quantum chromodynamics, Particle physics, 010308 nuclear & particles physics, Scattering, Hadron, Elliptic flow, FOS: Physical sciences, General Physics and Astronomy, Parton, 01 natural sciences, Nuclear physics, Strange matter, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex), 010306 general physics, Anisotropy, Nuclear Experiment, relativistic nuclear collisions, plus au collisions, elliptic flow, root-s(nn)=130 gev, signature, qcd, a+a
Abstract

Azimuthal anisotropy ($v_2$) and two-particle angular correlations of high $p_T$ charged hadrons have been measured in Au+Au collisions at $\sqrt{s_{NN}}$=130 GeV for transverse momenta up to 6 GeV/c, where hard processes are expected to contribute significantly. The two-particle angular correlations exhibit elliptic flow and a structure suggestive of fragmentation of high $p_T$ partons. The monotonic rise of $v_2(p_T)$ for $p_T3$ GeV/c a saturation of $v_2$ is observed which persists up to $p_T=6$ GeV/c., As published

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