Author: "R. Amirikas" - Searchworks@Jio Institute Digital Library Search Results

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92 results on '"R. Amirikas"'

1. PHENIX on-line systems

Author: N. Ericson, Athanasios Petridis, X. He, S. Lin, C.L. Britton, Minghui Liu, A. Moore, Kenneth Francis Read, Yu. Efremenko, Yoshio Arai, D. E. Fields, F. Barta, Brian Cole, T. Ushiroda, B. V. Jacak, Sebastian N. White, S. Belikov, M.S. Musrock, H.D. Skank, J. Gannon, J. S. Kapustinsky, F. Heistermann, K. Ebisu, T. A. Carey, M. J. Bennett, C. Y. Chi, M. Lenz, P. Steinberg, H. Wang, M. Tamai, E. Kistenev, John Hill, K. Oyama, S. Boose, Hirohiko Sato, A.L. Wintenberg, T. C. Awes, S. S. Adler, Graham H. Turner, T. Matsumoto, Hiroaki Ohnishi, Jun Kikuchi, W. C. Chang, J. Mead, J. G. Boissevain, L. Paffrath, Jack Fried, S. Markacs, Toru Sugitate, K. El Chenawi, F Matathias, K. Katou, W. Sippach, E. J. Desmond, G. R. Young, Joakim Nystrand, T. Shiina, P. Giannotti, J.W. Walker, Agneta Oskarsson, R. Gentry, Kensuke Homma, R. Seto, J Velkovska, H. Hara, W.D. Thomas, G. C. Mishra, David Olle Rickard Silvermyr, S. Hahn, M. Hibino, Martin Purschke, C. Witzig, Michael L. Simpson, M. Van Lith, M Allen, Sean A. Kelly, P. Constantin, K. N. Barish, F. Plasil, J. Halliwell, R. Rao, F. Toldo, S. S. Ryu, D. Kotchetkov, T. Plagge, Yongsun Kim, P. W. Stankus, Takao Sakaguchi, W. Von Achen, S. Kametani, G.A. Sleege, George Davey Smith, W. A. Zajc, A. D. Frawley, Lennart Osterman, M.S. Emery, J. Harder, W. Lenz, A. Kandasamy, J. H. Kang, J. S. Haggerty, Y. Tanaka, R.A. Todd, Steven E. Skutnik, V.S Pantuev, W.L. Bryan, S. Y. Kim, Wei Xie, R. Amirikas, V. Cianciolo, Paul O'Connor, E. O'Brien, A. G. Hansen, H. Cunitz, M.M. Cafferty, L. Zhang, L. Wood, J. E. Frantz, M Muniruzzamann, J. Simon-Gillo, Y. Kamyshkov, Hideki Hamagaki, D. Engo, Melissa C. Smith, C.E Pancake, K Kurita, J Jia, Xingguo Li, K.C. Cook, Atsushi Taketani, J. P. Sullivan, Jason Newby, T.F. Gee, S. Batsouli, M. Rau, H. W. Van Hecke, A. Franz, M. Bobrek, L. Villatte, J. L. Nagle, J. G. Lajoie, L. Britton, H. A. Gustafsson, U. Jagadish, R. P. Pisani, R. E. Mischke, C. Zhang, S. Rankowitz, G.T. Alley, F. Kajihara, M. Chiu, B. K. Nandi, T. K. Hemmick, M.A. Kelley, and S.S. Frank
Subjects: Physics, Nuclear and High Energy Physics, Data processing, Data collection, Event (computing), business.industry, Network packet, Detector, Front and back ends, Data acquisition, Line (text file), business, Instrumentation, Computer hardware
Abstract: The PHENIX On-Line system takes signals from the Front End Modules (FEM) on each detector subsystem for the purpose of generating events for physics analysis. Processing of event data begins when the Data Collection Modules (DCM) receive data via fiber-optic links from the FEMs. The DCMs format and zero suppress the data and generate data packets. These packets go to the Event Builders (EvB) that assemble the events in final form. The Level-1 trigger (LVL1) generates a decision for each beam crossing and eliminates uninteresting events. The FEMs carry out all detector processing of the data so that it is delivered to the DCMs using a standard format. The FEMs also provide buffering for LVL1 trigger processing and DCM data collection. This is carried out using an architecture that is pipelined and deadtimeless. All of this is controlled by the Master Timing System (MTS) that distributes the RHIC clocks. A Level-2 trigger (LVL2) gives additional discrimination. A description of the components and operation of the PHENIX On-Line system is given and the solution to a number of electronic infrastructure problems are discussed.
Published: 2003

2. Performance of a large forward resistive plate chamber for the CMS/LHC under high radiation environment

Author: S.W. Seo, S. H. Ahn, K. S. Sim, Y. J. Kim, B. Hong, Ye-Seul Kim, Kwanghyun Kim, S.J. Lee, Saewoong Bahk, Seong Jong Hong, D.G. Koo, Kisung Lee, J.T. Rhee, Soon-Kwon Nam, R. Amirikas, and Sangkyu Park
Subjects: Physics, Nuclear and High Energy Physics, Large Hadron Collider, Muon, Physics::Instrumentation and Detectors, Detector, High voltage, STRIPS, law.invention, Nuclear physics, chemistry.chemical_compound, chemistry, law, Electrical resistivity and conductivity, Bakelite, Instrumentation, Beam (structure)
Abstract: We present the first beam test results of a real size prototype RPC for the endcap region of the CMS, one of large detectors at CERN LHC. The chamber was built with relatively low resistivity bakelite made in Korea and was operated successfully at the Gamma Irradiation Facility at CERN under the highest photon flux available, which corresponds to an effective cluster rate up to about 800 Hz / cm 2 . The cross-talk effects between strips and sectors have been studied extensively. The high voltage plateau, which satisfies the CMS requirements for efficiency and the number of strips fired per cluster, extends to at least 300 V . The time resolution has been measured to be better than 1.3 ns in this HV plateau region. These results demonstrate that the current design of the device can be used as a muon trigger detector for the CMS forward region.
Published: 2001

3. Aspects of operational conditions of a double gap prototype RPC for the CMS/LHC experiment

Author: Kisung Lee, Saewoong Bahk, B. Hong, J. Y. Kim, S.W. Seo, V.A. Gapienko, S. H. Ahn, Ye-Seul Kim, Sangkyu Park, S.J. Lee, R. Amirikas, K.M Baik, Soon-Kwon Nam, D.G. Koo, Seong Jong Hong, K. S. Sim, J.T. Rhee, M. Y. Pac, I. T. Lim, and Y. J. Kim
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Large Hadron Collider, Detector, Resistive plate chamber, Cosmic ray, Time resolution, Instrumentation, Water vapor
Abstract: This paper presents the results from cosmic ray tests performed in the framework of R&D effort on the forward Resistive Plate Chamber (RPC) for CMS. A double gapRPC of dimensions 50 � 50 cm 2 with 2 mm gas gaps was tested. We report data on the use of tetrafluorethane-based gas mixture, with additions of water vapour and SF6. Efficiency, time resolution and cross-talk behaviour of the detector were investigated. # 2001 Elsevier Science B.V. All rights reserved. PACS: 29.40.Cs
Published: 2001

4. Study on the operational conditions of a double-gap resistive plate chamber for the CMS

Author: S.W. Seo, Y. J. Kim, S. H. Ahn, Kisung Lee, B. Hong, D.G. Koo, Saewoong Bahk, I. T. Lim, J.T. Rhee, Ye-Seul Kim, Kwang Souk Sim, M. Y. Pac, R. Amirikas, K.M Baik, S.J. Lee, Soon-Kwon Nam, Seong Jong Hong, J. Y. Kim, V.A. Gapienko, and Sangkyu Park
Subjects: Physics, Nuclear and High Energy Physics, business.industry, Bulk resistivity, Detector, Humidity, Resistive plate chamber, Time resolution, Cosmic ray, Nuclear physics, chemistry.chemical_compound, Optics, chemistry, Bakelite, business, Instrumentation, Water vapor
Abstract: We present the results from cosmic ray tests on the forward Resistive Plate Chamber (RPC) for the CMS. Double-gap prototype RPC were built and tested in the Korea Detector Laboratory (KODEL). We found that addition of SF 6 and water vapor to the tetrafluorethane-based gas mixture was required for the long-term stable operation of RPC. Efficiency, time resolution as well as cross-talk behavior of the detector were investigated. In addition, we present the temperature and humidity dependence of bulk resistivity of Korean bakelite in detail.
Published: 2000

5. Beam test result of a large real-size RPC for the CMS/LHC experiment

Author: Soon-Kwon Nam, V.A. Gapienko, Sangkyu Park, R. Amirikas, J. Y. Kim, K.M Baik, Seong Jong Hong, Ye-Seul Kim, Kwanghyun Kim, M. Y. Pac, B. Hong, S.J. Lee, J.T. Rhee, I. T. Lim, D.G. Koo, S.W. Seo, S. H. Ahn, Kwang Souk Sim, Kisung Lee, Saewoong Bahk, and Y. J. Kim
Subjects: Physics, Nuclear and High Energy Physics, Large Hadron Collider, Nuclear engineering, High radiation, Ranging, Nuclear physics, chemistry.chemical_compound, Real size, chemistry, Bakelite, Instrumentation, Beam (structure), Gamma irradiation
Abstract: In this report, first beam test results for a real size RE2-2 prototype RPC for the forward region of the CERN CMS are presented. The beam test for the prototype RPC was performed at the Gamma Irradiation Facility (GIF) in CERN with a particle rate ranging up to ∼700 Hz / cm 2 . These test results demonstrate that a real size RE2-2 RPC can be built with relatively low resistivity of bakelite (∼1010 Ω cm). The current design of the RPC can be an option for the CMS forward region with its good efficiency and time characteristics under high radiation environment.
Published: 2000

6. Temperature and humidity dependence of bulk resistivity of bakelite for resistive plate chambers in CMS

Author: Kisung Lee, Y.L. Lee, J. Y. Kim, Y.S. Ra, J.T. Rhee, V.A. Gapienko, B. Hong, Sangkyu Park, Seong Jong Hong, Ye-Seul Kim, S.W. Seo, Kwang Souk Sim, M. Y. Pac, S.Y. Jung, Y. J. Kim, S. H. Ahn, S.J. Lee, I. T. Lim, Soon-Kwon Nam, D.G. Koo, Saewoong Bahk, and R. Amirikas
Subjects: Physics, Nuclear and High Energy Physics, Resistive touchscreen, Humidity, Atmospheric temperature range, Particle detector, chemistry.chemical_compound, chemistry, Electrical resistivity and conductivity, Bakelite, Measuring instrument, Relative humidity, Composite material, Instrumentation
Abstract: This paper presents data obtained in a systematic study on the bulk resistivity of Korean bakelite as a function of temperature in the range 20–30°C and relative humidity in the range 35–65%. Strong dependence of resistivity on both temperature and humidity was observed. Measurements were carried out in the framework of R&D work on Resistive Plate Chambers (RPCs) which will be used in the CMS detector.
Published: 2000

7. Fragmentation and multifragmentation of 10.6A GeV gold nuclei

Author: M.I. Adamovich, M.M. Aggarwal, Y.A. Alexandrov, R. Amirikas, N.P. Andreeva, S.K. Badyal, A.M. Bakich, E.S. Basova, K.B. Bhalla, A. Bhasin, V.S. Bhatia, V. Bradnova, V.I. Bubnov, X. Cai, I.Y. Chasnikov, G.M. Chen, L.P. Chernova, M.M. Chernyavsky, S. Dhamija, K. El Chenawi, D. Felea, S.Q. Feng, L.N. Filippova, A.S. Gaitinov, E.R. Ganssauge, S. Garpman, S.G. Gerassimov, A. Gheata, M. Gheata, J. Grote, K.G. Gulamov, S.K. Gupta, V.K. Gupta, M. Haiduc, D. Hasegan, U. Henjes, B. Jakobsson, L. Just, E.K. Kanygina, S.P. Kharlamov, A.D. Kovalenko, S.A. Krasnov, V. Kumar, V.G. Larionova, I.A. Lebedev, Y.X. Li, L.S. Liu, Z.G. Liu, J.J. Lord, N.S. Lukicheva, Y. Lu, S.B. Luo, L.K. Mangotra, I. Manhas, I.S. Mittra, A.K. Musaeva, S.Z. Nasyrov, V.S. Navotny, J. Nystrand, G.I. Orlova, I. Otterlund, L.S. Peak, N.G. Peresadko, N.V. Petrov, V.A. Plyushchev, W.Y. Qian, Y.M. Qin, R. Raniwala, N.K. Rao, J.T. Rhee, M. Roeper, V.V. Rusakova, N. Saidkhanov, N.A. Salmanova, A.M. Seitimbetov, R. Sethi, B. Singh, D. Skelding, V.I. Skorobogatova, K. Söderström, E. Stenlund, L.N. Svechnikova, T. Svensson, A.M. Tawfik, V. Topor Pop, M.I. Tretyakova, T.P. Trofimova, U.I. Tuleeva, B.P. Tursunov, Vani Vashisht, S. Vokal, J. Vrlakova, H.Q. Wang, S.H. Wang, X.R. Wang, J.G. Wang, Z.Q. Weng, R.J. Wilkes, C.B. Yang, Z.B. Yin, L.Z. Yu, I.S. Zgura, D.H. Zhang, P.Y. Zheng, S.I. Zhokhova, and D.C. Zhou
Subjects: Physics, Nuclear and High Energy Physics, Phase transition, Projectile, Nuclear Theory, Hadron, chemistry.chemical_element, Observable, Nuclear physics, chemistry, Critical point (thermodynamics), Nuclear fusion, Atomic physics, Nuclear Experiment, Critical exponent, Helium
Abstract: The experimental data on the interactions of 10.6A GeV gold nuclei in nuclear emulsions are analyzed with particular emphasis of target separation interactions and study of critical exponents. Charged fragment moments, conditional moments as well as two and three – body asymmetries of the fast moving projectile particles are determined in terms of the total charge remaining bound in the multiply charged projectile fragments. Some differences in the average yields of helium nuclei and heavier fragments are observed, which may be attributed to a target effect. However, two and three-body asymmetries and conditional moments indicate that the breakup mechanism of the projectile seems to be independent of target mass. We looked for evidence of critical point observable in finite nuclei by study the resulting charged fragments distributions. We have obtained the values for the critical exponents γ, β and τ and compare our results with those at lower energy experiment (1.0A GeV data). The values suggest that a phase transition like behavior, is observed.
Published: 1999

8. Multifractal analysis of particles produced in 197 Au, 32 S and 16 O induced interactions at high energies

Author: S.Z. Nasyrov, K. Söderström, A.K. Musaeva, Joakim Nystrand, D. C. Zhou, Andrei Gheata, J. J. Lord, A. M. Bakich, C.B. Yang, Vivek K. Gupta, S.A. Krasnov, J. Grote, L. N. Svechnikova, M. Roeper, Shiv K. Gupta, D. Skelding, J. T. Rhee, S. Lokanathan, I. Otterlund, S.Q. Feng, M. Tothova, C.G. Lee, R. Sethi, E. R. Ganssauge, S. I. Zhokhova, Dong-Hai Zhang, S. Dhamija, V.I. Skorobogatova, M. I. Tretyakova, V. A. Plyushchev, S. Vokal, V. Bradnova, K. G. Gulamov, V. Kumar, Y.X. Li, Paul Nilsson, P. Y. Zheng, D.M. Seliverstov, V. S. Bhatia, Z.R. Hu, L. S. Liu, V. G. Larionova, A. S. Gaitinov, A. Pavukova, B. B. Simonov, G.M. Chen, S. B. Luo, M. Karabova, U.I. Tuleeva, L. Liang, X. Cai, Madan M. Aggarwal, M. I. Adamovich, H. Q. Wang, W. Y. Qian, L.Z. Yu, Y. Lu, N. A. Salmanova, Y.L. Yu, F. A. Avetyan, F. G. Lepekhin, G. I. Orlova, Y. C. Kim, Shi-kun Wang, Janka Vrlakova, Maria Haiduc, Rashmi Raniwala, V. S. Navotny, A.M. Tawfik, Evert Anders Stenlund, O. V. Levitskaya, N. A. Marutyan, K. El Chenawi, A.M. Seitimbetov, S. K. Badyal, Z.G. Liu, K. B. Bhalla, N. K. Rao, Anju Bhasin, R. Amirikas, T. Wu, N. Saidkhanov, L. G. Sarkisova, Z. Q. Weng, V. I. Bubnov, S. P. Kharlamov, V. G. Bogdanov, Y.M. Qin, D. Felea, N. S. Lukicheva, V. V. Rusakova, Z.B. Yin, V. Vashisht, Alexander Kovalenko, T. P. Trofimova, S. Garpman, X.R. Wang, N. P. Andreeva, S. G. Gerassimov, N. G. Peresadko, E. S. Basova, I. S. Mittra, L. Just, Mihaela Gheata, C.I. Shakhova, L.S. Peak, E. K. Kanygina, Bo Jakobsson, V. R. Sarkisyan, M. M. Chernyavski, N. V. Petrov, L. P. Chernova, D. Hasegan, H. Liu, I. Y. Chasnikov, Y. A. Alexandrov, R. J. Wilkes, L. K. Mangotra, B. Singh, and W. Li
Subjects: Physics, Spectral representation, Fractal, Monte Carlo method, General Physics and Astronomy, Statistical analysis, Rapidity, Multifractal spectra, Multifractal system, Atomic physics, Statistical fluctuations, Molecular physics
Abstract: We analyse the multifractal structure of moments Gq in terms of a new variable X on data of 197Au, 32S and 16O induced interactions with emulsion nuclei and Monte Carlo generated samples. The dynamical properties of the produced particles are mapped onto multifractal spectra. We compare ln G in experimental data of 197Au, 32S and 16O with pure statistical fluctuations. It is shown that the stochasticity plays an important role for the G-moments.
Published: 1998

9. Critical behaviour in Au fragmentation at 10.7A GeV

Author: K. Söderström, P. Y. Zheng, L. K. Mangotra, K. G. Gulamov, R. Sethi, V. I. Bubnov, V. A. Plyushchev, S. Vokal, V. Kumar, Y.X. Li, Madan M. Aggarwal, V. S. Navotny, G.M. Chen, Joakim Nystrand, L. N. Svechnikova, L. P. Chernova, A.K. Musaeva, N. A. Salmanova, V. S. Bhatia, Anju Bhasin, N. Saidkhanov, C.I. Shakhova, L. S. Liu, V. G. Larionova, D. Skelding, J. T. Rhee, M. Tothova, E. R. Ganssauge, V. V. Rusakova, I. Y. Chasnikov, L. G. Sarkisova, C.B. Yang, Z. Q. Weng, Y. A. Alexandrov, Bo Jakobsson, Rashmi Raniwala, L. Karlsson, L.S. Peak, R. J. Wilkes, J. J. Lord, S.A. Krasnov, I. Manhas, V. R. Sarkisyan, J. Grote, N.A. Tawfik, Dong-Hai Zhang, M. I. Tretyakova, S.Z. Nasyrov, N. G. Peresadko, E. S. Basova, A.M. Seitimbetov, N. K. Rao, Janka Vrlakova, D. C. Zhou, A. S. Gaitinov, X. Cai, U.I. Tuleeva, F. A. Avetyan, A. M. Bakich, M. Roeper, Maria Haiduc, M. Karabova, M. M. Chernyavski, L. Just, H. Q. Wang, E. K. Kanygina, S. Garpman, M. I. Adamovich, X.R. Wang, W. Y. Qian, S. K. Badyal, Z.G. Liu, S. I. Zhokhova, Alexander Kovalenko, B. Singh, N. P. Andreeva, S. B. Luo, S. P. Kharlamov, T. P. Trofimova, Shi-kun Wang, V. G. Bogdanov, U. Henjes, S. G. Gerassimov, Y.M. Qin, N. S. Lukicheva, G. I. Orlova, Vivek K. Gupta, Shiv K. Gupta, K. B. Bhalla, S. Dhamija, R. Amirikas, Evert Anders Stenlund, N. A. Marutyan, S. Lokanathan, Y. Lu, V. Bradnova, and I. Otterlund
Subjects: Physics, Nuclear and High Energy Physics, Phase transition, education.field_of_study, Hadron, Population, Charge density, Supercritical fluid, Nuclear physics, Fragmentation (mass spectrometry), Nuclear fusion, Nuclear emulsion, Nuclear Experiment, education
Abstract: The complete charge distribution of products from Au nuclei fragmenting in nuclear emulsion at 10.7A GeV has been measured. Multiplicities of produced particles and particles associated with the target source are used to select peripheral and central events. A statistical analysis, based on event-by-event charge distributions, show that a population of subcritical, critical and supercritical events, i.e. a phase transition like behaviour, is observed among peripheral collisions.
Published: 1998

10. Nuclear effect in higher-dimensional factorial moment analysis of the $^{16}$ O-, $^{32}$ S- and $^{197}$ Au-Em interaction data at 200, 60 and 11 A GeV/c

Author: Madan M. Aggarwal, G. F. Xu, R. J. Wilkes, L. Liang, N. A. Salmanova, V. S. Navotny, O. V. Levitskaya, K. Söderström, D. Hasegan, K. El Chenawi, I. S. Mittra, Anju Bhasin, Mihaela Gheata, A. Pavukova, N. Saidkhanov, C.I. Shakhova, R. Sethi, S. B. Luo, V. A. Plyushchev, J. J. Lord, S. Vokal, J. Grote, S. K. Gupta, Y.X. Li, L.S. Peak, Joakim Nystrand, F.A. Avetian, A. S. Gaitinov, Z. Q. Weng, N. V. Petrov, L. Just, K. G. Gulamov, M. Tothova, V. Kumar, S. Garpman, Z.R. Hu, V. S. Bhatia, L. S. Liu, V. G. Larionova, A.M. Tawfik, M. Karabova, H. Q. Wang, S.Q. Feng, C.G. Lee, K. B. Bhalla, R. Amirikas, Y. Lu, Vivek K. Gupta, L. N. Svechnikova, W. Y. Qian, V. Bradnova, X.R. Wang, S. P. Kharlamov, E. K. Kanygina, Rashmi Raniwala, L.Z. Yu, L. P. Chernova, Paul Nilsson, V. Vashisht, V. G. Bogdanov, Maria Haiduc, U.I. Tuleeva, N. P. Andreeva, V.I. Skorobogatova, F. G. Lepekhin, Y.M. Qin, D. Felea, I. Otterlund, M. Roeper, A.M. Seitimbetov, G.M. Chen, V.R. Sarkisian, Alexander Kovalenko, Bo Jakobsson, Y. C. Kim, N. S. Lukicheva, N. K. Rao, M. I. Tretyakova, D.M. Seliverstov, V. I. Bubnov, T. P. Trofimova, S.G. Gerasimov, Y. Deng, Dong-Hai Zhang, P. Y. Zheng, V. V. Rusakova, Z.B. Yin, N. G. Peresadko, E. S. Basova, X. Cai, I. Y. Chasnikov, Y. A. Alexandrov, G. I. Orlova, L. G. Sarkisova, Janka Vrlakova, A.K. Musaeva, S. K. Badyal, Z.G. Liu, C.B. Yang, S. A. Krasnov, E. Stenlund, Bhartendu K. Singh, B. B. Simonov, S.Z. Nasyrov, L. K. Mangotra, D. Skelding, J. T. Rhee, S. I. Zhokhova, Y.L. Yu, S. Lokanathan, D. C. Zhou, Andrei Gheata, A. M. Bakich, E. R. Ganssauge, M. I. Adamovich, Shi-kun Wang, N.A. Marutian, S. Dhamija, and M. M. Chernyavsky
Subjects: Nuclear physics, Physics, Moment (mathematics), Particle physics, Angular distribution, Physics and Astronomy (miscellaneous), Nuclear Theory, Emulsion, Rapidity, Nuclear Experiment, Particle Physics - Phenomenology, Factorial moment
Abstract: The anomalous behavior of 2-dimensional factorial moment in nucleus-nucleus collisions is studied in some detail using both mini-bias and central collision data of ^{16}O-, ^{32}S- and ^{197}Au-Em interactions from EMU01 experiment. The correct value for the effective Hurst exponent in the analysis of higher-dimensional factorial moment is found to be greater than unity, showing clearly the existence of superposition effect in nucleus-nucleus collisions. The anomalous behavior of 2-dimensional factorial moment in nucleus-nucleus collisions is studied in some detail using both mini-bias and central collision data of ~{16}O-, ~{32}S- and ~{197}Au-Em interactions from EMU01 experiment. The correct value for the effective Hurst exponent in the analysis of higher-dimensional factorial moment is found to be greater than unity, showing clearly the existence of superposition effect in nucleus-nucleus collisions. The anomalous behavior of 2-dimensional factorial moment in nucleus-nucleus collisions is studied in some detail using both mini-bias and central collision data of ~{16}O-, ~{32}S- and ~{197}Au-Em interactions from EMU01 experiment. The correct value for the effective Hurst exponent in the analysis of higher-dimensional factorial moment is found to be greater than unity, showing clearly the existence of superposition effect in nucleus-nucleus collisions. The anomalous behavior of 2-dimensional factorial moment in nucleus-nucleus collisions is studied in some detail using both mini-bias and central collision data of ~{16}O-, ~{32}S- and ~{197}Au-Em interactions from EMU01 experiment. The correct value for the effective Hurst exponent in the analysis of higher-dimensional factorial moment is found to be greater than unity, showing clearly the existence of superposition effect in nucleus-nucleus collisions. The anomalous behavior of 2-dimensional factorial moment in nucleus-nucleus collisions is studied in some detail using both mini-bias and central collision data of ~{16}O-, ~{32}S- and ~{197}Au-Em interactions from EMU01 experiment. The correct value for the effective Hurst exponent in the analysis of higher-dimensional factorial moment is found to be greater than unity, showing clearly the existence of superposition effect in nucleus-nucleus collisions. The anomalous behavior of 2-dimensional factorial moment in nucleus-nucleus collisions is studied in some detail using both mini-bias and central collision data of ~{16}O-, ~{32}S- and ~{197}Au-Em interactions from EMU01 experiment. The correct value for the effective Hurst exponent in the analysis of higher-dimensional factorial moment is found to be greater than unity, showing clearly the existence of superposition effect in nucleus-nucleus collisions. The anomalous behavior of 2-dimensional factorial moment in nucleus-nucleus collisions is studied in some detail using both mini-bias and central collision data of ~{16}O-, ~{32}S- and ~{197}Au-Em interactions from EMU01 experiment. The correct value for the effective Hurst exponent in the analysis of higher-dimensional factorial moment is found to be greater than unity, showing clearly the existence of superposition effect in nucleus-nucleus collisions. The anomalous behavior of 2-dimensional factorial moment in nucleus-nucleus collisions is studied in some detail using both mini-bias and central collision data of ~{16}O-, ~{32}S- and ~{197}Au-Em interactions from EMU01 experiment. The correct value for the effective Hurst exponent in the analysis of higher-dimensional factorial moment is found to be greater than unity, showing clearly the existence of superposition effect in nucleus-nucleus collisions. The anomalous behavior of 2-dimensional factorial moment in nucleus-nucleus collisions is studied in some detail using both mini-bias and central collision data of ~{16}O-, ~{32}S- and ~{197}Au-Em interactions from EMU01 experiment. The correct value for the effective Hurst exponent in the analysis of higher-dimensional factorial moment is found to be greater than unity, showing clearly the existence of superposition effect in nucleus-nucleus collisions. The anomalous behavior of 2-dimensional factorial moment in nucleus-nucleus collisions is studied in some detail using both mini-bias and central collision data of ^{16}O-, ^{32}S- and ^{197}Au-Em interactions from EMU01 experiment. The correct value for the effective Hurst exponent in the analysis of higher-dimensional factorial moment is found to be greater than unity, showing clearly the existence of superposition effect in nucleus-nucleus collisions.
Published: 1997

11. Multifragmentation of Gold nuclei in the interactions with photoemulsion nuclei at 10.7 GeV/nucleon

Author: L. N. Svechnikova, M. Karabova, H. Q. Wang, W. Y. Qian, A.M. Tawfik, Madan M. Aggarwal, L.Z. Yu, V. S. Navotny, K. El Chenawi, Rashmi Raniwala, R. Sethi, L.S. Peak, K. G. Gulamov, V. Kumar, M. I. Tretyakova, M. Gheata, K. Söderström, S.Z. Nasyrov, L. K. Mangotra, Y.X. Li, E. Baklitskaya, A. Gheata, N. G. Peresadko, E. S. Basova, G. Z. Eligbaeva, X. Cai, D. C. Zhou, L. Just, S.Q. Feng, Anju Bhasin, N. Saidkhanov, A. M. Bakich, Bhartendu K. Singh, T. I. Shakhova, M. Roeper, I.Ya. Chasnikov, M. I. Adamovich, G.M. Chen, D. Felea, Joakim Nystrand, S. Dhamija, Dong-Hai Zhang, Z. Q. Weng, N. A. Salmanova, V.R. Sarkisian, D. Skelding, Yu.A. Aleksandrov, M. M. Chernyavsky, Shi-kun Wang, X.R. Wang, J. T. Rhee, M. Haiduc, V. A. Plyushchev, S. Vokal, S. P. Kharlamov, V. G. Bogdanov, U. Henjes, Z.V. Anzon, V.V. Uzhinsky, N. P. Andreeva, Y.M. Qin, K. B. Bhalla, V. S. Bhatia, L. S. Liu, V. G. Larionova, U.I. Tuleeva, R. Amirikas, E. R. Ganssauge, N. S. Lukicheva, N.A. Marutian, T. Svensson, N. V. Maslennikova, S. I. Zhokhova, A.M. Seitimbetov, N. K. Rao, V. Vashisht, S. K. Gupta, Y. Lu, A.Y. Mashkov, E. K. Kanygina, L. E. Eremenko, L. G. Sarkisova, F.A. Avetian, B.P. Tursunov, G. S. Kalyachkina, E. Stenlund, G. I. Orlova, Bo Jakobsson, I. Manhas, I. Otterlund, Alexander Kovalenko, M. Tothova, S.G. Gerasimov, N. V. Petrov, S. Garpman, T. P. Trofimova, Vivek K. Gupta, A. S. Gaitinov, V. I. Bubnov, Janka Vrlakova, A.K. Musaeva, D. Hasegan, V. V. Rusakova, Z.B. Yin, R. J. Wilkes, P. Y. Zheng, I. S. Mittra, S. Lokanathan, J. J. Lord, S. B. Luo, J. Grote, C.B. Yang, S. A. Krasnov, L. P. Chernova, V. Bradnova, S. K. Badyal, and Z.G. Liu
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Nuclear Theory, Charge density, Statistical model, Nuclear physics, Transverse momentum, Radial flow, Multiplicity (chemistry), Nuclear Experiment, Nucleon, Glauber, Excitation
Abstract: Recent results from the EMU-01/12 collaboration are presented for 10.7 GeV/nucleon gold nuclei interactions in emulsion. The distributions of "bound" charge ( Zbound ,Z b3), multiplicity distributions, fragment correlations and fluctua- tions are discussed. The data are compared to similar results obtained on the ALADIN setup at 600 MeV/nucleon. It is shown that multifragmentation of gold nuclei at high and in- termediate energies has common features. It is also obtained that the IMFs have reduced multiplicity at high energies. The data are analyzed within the scope of the statistical model of multifragmentation. This model requires the fol- lowing predetermined model ingredients: mass, charge and excitation energy of nuclear residuals. The simple estimation method of these characteristics is proposed in the framework of the Glauber approach. It is shown that the multifragmentation model reproduces qualitatively the present data. A dramatic discrepancy between the predicted and experimental yield of two charged fragments is found. The evolution of transverse momentum of fragments as a function of Zbound is presented. It is shown that the model greatly underpredicts the transverse momentum of fragments. It is interpreted as evidence of a strong radial flow of spectator fragments.
Published: 1997

12. Complex analysis of gold interactions with photoemulsion nuclei at 10.7 GeV/nucleon within the framework of cascade and FRITIOF models

Author: L. Just, N. G. Peresadko, E. S. Basova, E. Stenlund, T. H. Burnett, V. Bradnova, L. N. Svechnikova, N. A. Marutyan, A.Y. Mashkov, M. Ochs, Rashmi Raniwala, Alexander Kovalenko, T. P. Trofimova, N. S. Lukicheva, M. I. Tretyakova, M. Roeper, E. K. Kanygina, L. P. Chernova, K. Söderström, V. V. Uzhinskii, U.I. Tuleeva, A.M. Seitimbetov, E. R. Ganssauge, M. Karabova, Dong-Hai Zhang, S.Z. Nasyrov, L. K. Mangotra, N. K. Rao, I. S. Mittra, C.I. Shakhova, H. Q. Wang, R. J. Wilkes, K. G. Gulamov, V. Kumar, I. Y. Chasnikov, L.S. Peak, N. A. Salmanova, W. Y. Qian, Y. L. Xia, G. Z. Eligbaeva, Y. A. Alexandrov, N. V. Petrov, S. Garpman, X. Cai, Vivek K. Gupta, S. Dhamija, L. E. Eremenko, Joakim Nystrand, Madan M. Aggarwal, S. Lokanathan, Bo Jakobsson, M. Tothova, F. A. Avetyan, G. S. Kalyachkina, M. M. Chernyavski, Sudhir Raniwala, N. P. Andreeva, D. C. Zhou, V. R. Sarkisyan, S. Kachroo, C. Graf, S. G. Gerassimov, V. S. Navotny, A. M. Bakich, S. P. Kharlamov, A. S. Gaitinov, S. B. Luo, S. K. Gupta, G.S. Shabratova, V. G. Bogdanov, Z.V. Anzon, K. B. Bhalla, Y.M. Qin, M. I. Adamovich, D. Skelding, Anju Bhasin, N. Saidkhanov, B.P. Tursunov, Z. Q. Weng, R. Amirikas, E. Baklitskaya, S. Mokerjee, G. I. Orlova, J. J. Lord, L. G. Sarkisova, J. Grote, N. V. Maslennikova, V. I. Bubnov, S. I. Zhokhova, V. V. Rusakova, S. K. Badyal, Y. D. Li, C.B. Yang, S. A. Krasnov, S. Kitroo, Janka Vrlakova, I. Otterlund, V. A. Plyushchev, S. Vokal, Renu Arora, V. S. Bhatia, L. S. Liu, V. G. Larionova, and P. Y. Zheng
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Cascade, Nucleon
Published: 1997

13. Charged particle multiplicities, densities and fluctuations in Pb+Pb interactions at 158 A GeV

Author: S. I. Zhokhova, R. J. Wilkes, S.Z. Nasyrov, Y.L. Yu, B. B. Simonov, M. Karabova, D. Hasegan, H. Q. Wang, A.M. Tawfik, R. Sethi, F. G. Lepekhin, L. P. Chernova, S. K. Badyal, Z.G. Liu, Dong-Hai Zhang, Paul Nilsson, I. Otterlund, E. Stenlund, I. Y. Chasnikov, A. S. Gaitinov, Y.X. Li, Y. A. Alexandrov, V. Vashisht, N. V. Petrov, S. Garpman, L. Liang, D. Skelding, Y. C. Kim, E. R. Ganssauge, B. Singh, J. T. Rhee, E. K. Kanygina, V. I. Bubnov, L. K. Mangotra, M. I. Adamovich, W. Y. Qian, L.Z. Yu, Rashmi Raniwala, N. G. Peresadko, E. S. Basova, N. S. Lukicheva, Maria Haiduc, S. B. Luo, K. Söderström, V.I. Skorobogatova, Bo Jakobsson, M. I. Tretyakova, Alexander Kovalenko, Janka Vrlakova, A.K. Musaeva, G.M. Chen, Shi-kun Wang, K. G. Gulamov, S.Q. Feng, J. J. Lord, V. Kumar, J. Grote, L. N. Svechnikova, X. Cai, L. Just, A.M. Seitimbetov, Joakim Nystrand, V. V. Rusakova, T. P. Trofimova, C.G. Lee, Z.B. Yin, V. A. Plyushchev, S. Vokal, N. K. Rao, C.B. Yang, S.A. Krasnov, X.R. Wang, D. C. Zhou, S. Dhamija, V. S. Bhatia, Andrei Gheata, A. M. Bakich, N. A. Salmanova, L. S. Liu, V. G. Larionova, S. Lokanathan, N. P. Andreeva, M. Tothova, Anju Bhasin, N. Saidkhanov, S. G. Gerassimov, K. B. Bhalla, M. M. Chernyavski, Madan M. Aggarwal, Mihaela Gheata, R. Amirikas, Z. Q. Weng, L.S. Peak, P. Y. Zheng, U.I. Tuleeva, I. S. Mittra, S. P. Kharlamov, C.I. Shakhova, Y.M. Qin, D. Felea, V. S. Navotny, O. V. Levitskaya, K. El Chenawi, Z.R. Hu, Y. Lu, D.M. Seliverstov, G. I. Orlova, Vivek K. Gupta, Shiv K. Gupta, V. Bradnova, and M. Roeper
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Charged particle
Abstract: Results on charged particle multiplicities, densities and fluctuations from central Pb+Pb interactions at 158 A GeV are presented and discussed.
Published: 1997

14. Rescattering probed by the emission of slow target associated particles in high-energy heavy-ion interactions

Author: M.I Adamovich, M.M Aggarwal, Y.A Alexandrov, R Amirikas, N.P Andreeva, Z.V Anzon, F.A Avetyan, S.K Badyal, A.M Bakich, E.S Basova, K.B Bhalla, A Bhasin, V.S Bhatia, V.G Bogdanov, V Bradnova, V.I Bubnov, X Cai, I.Y Chasnikov, L.P Chernova, M.M Chernyavski, S Dhamija, K El Chenawi, G.Z Eligbaeva, L.E Eremenko, A.S Gaitinov, E.R Ganssauge, S Garpman, S.G Gerassimov, J Grote, K.G Gulamov, S.K Gupta, V.K Gupta, M Haiduc, B Jakobsson, L Just, S Kachroo, G.S Kalyachkina, E.K Kanygina, M Karabova, S Kitroo, S.P Kharlamov, A.D Kovalenko, S.A Krasnov, V Kumar, V.G Larionova, L.S Liu, S Lokanathan, J.J Lord, N.S Lukicheva, S.B Luo, L.K Mangotra, N.A Marutyan, A.Y Mashkov, N.V Maslennikova, I.S Mittra, A.K Musaeva, S.Z Nasyrov, V.S Navotny, J Nystrand, G.I Orlova, I Otterlund, L.S Peak, N.G Peresadko, N.V Petrov, V.A Plyushchev, W.Y Qian, Y.M Qin, R Raniwala, N.K Rao, M Roeper, V.V Rusakova, N Saidkhanov, N.A Salmanova, L.G Sarkisova, V.R Sarkisyan, A.M Seitimbetov, R Sethi, G.S Shabratova, C.I Shakhova, B Singh, D Skelding, K Söderström, E Stenlund, L.N Svechnikova, T Svensson, M Tothova, M.I Tretyakova, T.P Trofimova, U.I Tuleeva, B.P Tursunov, S Vokal, J Vrlakova, H.Q Wang, X.R Wang, Z.Q Weng, R.J Wilkes, C.B Yang, D.H Zhang, P.Y Zheng, S.I Zhokhova, and D.C Zhou
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, High energy, biology, Venus, Heavy ion, Atomic physics, biology.organism_classification
Abstract: In this letter the distribution of slow target associated particles emitted in Au + Emulsion interactions at 11.6 A GeV/c is studied, The three models RQMD, FRITIOF and VENUS are used for comparisons and especially their treatment of rescattering is investigated.
Published: 1995

15. Charged particle multiplicity and pseudorapidity density distributions in 16O, 28Si and 197Au-induced nuclear interactions at 14.6 and 11.6A GeV/c

Author: M.I. Adamovich, M.M. Aggarwal, Y.A. Alexandrov, R. Amirikas, N.P. Andreeva, Z.V. Anzon, R. Arora, F.A. Avetyan, S.K. Badyal, A.M. Bakich, E.S. Basova, I.K. Bazarov, K.B. Bhalla, A. Bhasin, V.S. Bhatia, V.G. Bogdanov, V. Bradnova, V.I. Bubnov, T.H. Burnett, X. Cai, D.A. Carshiev, I.Y. Chasnikov, L.P. Chernova, M.M. Chernyavski, S. Dhamija, G.Z. Eligbaeva, L.E. Eremenko, A.S. Gaitinov, E.R. Ganssauge, S. Garpman, S.G. Gerassimov, C. Graf, J. Grote, K.G. Gulamov, S.K. Gupta, V.K. Gupta, B. Jakobsson, L. Just, S. Kachroo, G.S. Kalyachkina, E.K. Kanygina, M. Karabova, S. Kitroo, S.P. Kharlamov, A.D. Kovalenko, S.A. Krasnov, V. Kumar, V.G. Larionova, L.S. Liu, S. Lokanathan, J.J. Lord, N.S. Lukicheva, S.B. Luo, L.K. Mangotra, N.A. Marutyan, A.Y. Mashkov, N.V. Maslennikova, L.S. Mittra, S. Mokerjee, S.Z. Nasyrov, V.S. Navotny, J. Nystrand, M. Ochs, G.I. Orlova, I. Otterlund, L.S. Peak, N.G. Peresadko, N.V. Petrov, V.A. Plyushchev, W.Y. Qian, Y.M. Qin, R. Raniwala, S. Raniwala, N.K. Rao, M. Roeper, L. Rusakova, N. Saidkhanov, N.A. Salmanova, L.G. Sarkisova, V.R. Sarkisyan, A.M. Seitimbetov, G.S. Shabratova, C.I. Shakhova, S.N. Shpilev, D. Skelding, K. Söderström, E. Stenlund, L.N. Svechnikova, M. Tothova, M.I. Tretyakova, T.P. Trofimova, U.I. Tuleeva, B.P. Tursunov, S. Vokal, J. Vrlakova, H.Q. Wang, Z.Q. Weng, R.J. Wilkes, Y.L. Xia, C.B. Yang, D.H. Zhang, P.Y. Zheng, S.I. Zhokhova, and D.C. Zhou
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, biology, Pseudorapidity, High Energy Physics::Experiment, Venus, Multiplicity (chemistry), Nuclear Experiment, biology.organism_classification, Charged particle
Abstract: Pseudorapidity density and multiplicity distributions of charged particles produced in heavy-ion collisions at the BNL AGS have been studied. The multiplicity distributions and pseudorapidity distributions of shower particles in Au-induced interactions are presented and compared with model predictions from RQMD, FRITIOF and VENUS. It is shown that the widths of the pseudorapidity distributions of produced particles in central collisions are independent of the interacting system. The results from EMU01 have been compared, and found to agree, with the results from two other heavy-ion experiments, E802 and E814.
Published: 1995

16. On the production of slow particles in high energy heavy ion collisions

Author: L. P. Chernova, C.B. Yang, S.A. Krasnov, S. B. Luo, S. P. Kharlamov, D. H. Zhang, D. Skelding, B.P. Tursunov, V. G. Bogdanov, Z.V. Anzon, Y.M. Qin, I. Y. Chasnikov, Z. I. Solovieva, S. N. Shpilev, Y. A. Alexandrov, G. S. Kalyachkina, P. Y. Zheng, N. V. Petrov, L. N. Svechnikova, L. K. Mangotra, E. K. Kanygina, Alexander Kovalenko, V. I. Bubnov, M. I. Tretyakova, S. Mokerjee, L. Just, T. P. Trofimova, G. S. Shabratova, X. Cai, S. Kitroo, R. Raniwala, S. Kachroo, C. Graf, V. V. Rusakova, S.Z. Nasyrov, D. C. Zhou, K. Söderström, Janka Vrlakova, N. P. Andreeva, M. Karabova, R. J. Wilkes, H. Q. Wang, A. M. Bakich, J. Nystrand, I. S. Mittra, W. Y. Qian, S. G. Gerassimov, Anju Bhasin, Y. D. Li, M. Tothova, N. Saidkhanov, A. S. Gaitinov, S. Dhamija, Sudhir Raniwala, C.I. Shakhova, N. A. Salmanova, S. K. Gupta, Bo Jakobsson, S. Vokal, Y. L. Xia, V. A. Plyushchev, Z. Q. Weng, M. Roeper, L.S. Peak, V. R. Sarkisyan, J. J. Lord, V. S. Navotny, V. Bradnova, Renu Arora, N. V. Maslennikova, J. Grote, V. S. Bhatia, L. S. Liu, N. G. Peresadko, E. S. Basova, V. G. Larionova, S. I. Zhokhova, M. M. Chernyavski, S. Garpman, G. I. Orlova, M. J. Adamovich, D. A. Carshiev, U.I. Tuleeva, E. R. Ganssauge, A.M. Seitimbetov, T. H. Burnett, N. K. Rao, Evert Anders Stenlund, M. M. Aggarwal, N. A. Marutyan, A.Y. Mashkov, I. K. Bazarov, V. K. Gupta, K. G. Gulamov, V. Kumar, S. Lokanathan, G. Z. Eligbaeva, K. B. Bhalla, R. Amirikas, M. Ochs, I. Otterlund, L. E. Fremenko, N. S. Lukicheva, S. K. Badyal, F. A. Avetyan, and L. G. Sarkisova
Subjects: Physics, High energy, Physics and Astronomy (miscellaneous), Chemical physics, Yield (chemistry), Hadron, Heavy ion, Impact parameter, Atomic physics, Nuclear Experiment, Engineering (miscellaneous)
Abstract: The mechanism for producing slow, target associated particles in high energy heavy ion collisions is investigated. It is shown that the same mechanism which was proposed for hadron induced interactions is likely to appear also for heavy-ion reactions. The results indicate however a much weaker correlation between impact parameter and yield of slow particles.
Published: 1995

17. 28Si(32S) fragmentation at 3.7 A, 14.6 A and 200 A GeV

Author: M. I. Tretyakova, X. Cai, L. N. Svechnikova, B.P. Tursunov, L. E. Eremenko, G. S. Shabratova, Bo Jakobsson, M. Ochs, S. Vokal, R. Raniwala, Alexander Kovalenko, T. H. Burnett, R. J. Wilkes, V. R. Sarkisyan, S. K. Gupta, V. I. Bubnov, V. A. Plyushchev, Renu Arora, G. S. Kalyachkina, T. P. Trofimova, V. S. Bhatia, L. S. Liu, V. G. Larionova, C.B. Yang, S.Z. Nasyrov, V. K. Gupta, S. P. Kharlamov, L. P. Chernova, V. G. Bogdanov, V. Bradnova, V. V. Rusakova, Y. L. Xia, Z.V. Anzon, Y.M. Qin, N. P. Andreeva, D. H. Zhang, S. Kachroo, I. Y. Chasnikov, V. S. Navotny, S. G. Gerassimov, Anju Bhasin, N. Saidkhanov, Y. A. Alexandrov, N. V. Petrov, C. Graf, K. Söderström, D. Skelding, M. M. Chernyavski, N. G. Peresadko, E. S. Basova, M. Karabova, K. B. Bhalla, S. B. Luo, G. I. Orlova, K. G. Gulamov, V. Kumar, Z. Q. Weng, H. Q. Wang, R. Amirikas, F. A. Avetyan, S. Garpman, S. K. Badayal, S. Dhamia, J. Nystrand, N. S. Lukicheva, Z. I. Solovieva, D. C. Zhou, W. Y. Qian, S. N. Shpilev, S. A. Karsnov, I. S. Mittra, G. Z. Eligbaeva, A. S. Gaitinov, C.I. Shakhova, L. G. Sarkisova, A. M. Bakich, S. Mokerjee, E. K. Kanygina, S. Kitroo, A.M. Seitimbetov, N. K. Rao, Janka Vrlakova, S. Lokanathan, L.S. Peak, J. J. Lord, J. Grote, M. Tothova, M. I. Adamovich, Sudhir Raniwala, Evert Anders Stenlund, P. Y. Zheng, L. K. Mangotra, M. Roeper, E. R. Ganssauge, N. V. Maslennikova, S. I. Zhokhova, M. M. Aggarwal, N. A. Marutyan, A.Y. Mashkov, I. K. Bazarov, Y. D. Li, L. Just, N. A. Salmanova, D. A. Carshiev, U.I. Tuleeva, and I. Otterlund
Subjects: Nuclear reaction, Nuclear physics, Physics, Nuclear and High Energy Physics, Fragmentation (mass spectrometry), Astrophysics::High Energy Astrophysical Phenomena, Charge density, Nuclear fusion, High Energy Physics::Experiment, Spallation, Atomic physics, Nuclear Experiment
Abstract: The fragmentation topology of28Si at 3.7A GeV and 14.6A GeV and32S at 200A GeV in reactions with emulsion nuclei is presented. The fragmentation cross sections are very similar at all three energies. A statistical percolation model can qualitatively describe the data forZ≥ 6. The He production is underestimated and the 3 ≤Z ≤ 5 fragments overestimated by this model.
Published: 1995

18. Particle production in gold and lead induced interactions at AGS and SPS

Author: M. M. Aggarwal, N. A. Marutyan, A.Y. Mashkov, M. Karabova, N. A. Salmanova, H. Q. Wang, W. Y. Qian, M. Roeper, J. Nystrand, E. R. Ganssauge, F.A. Aveytan, T. H. Burnett, M Hajduk, V. I. Bubnov, I. S. Mittra, I. Otterlund, C.I. Shakhova, V. K. Gupta, M. I. Adamovich, L. Just, V. Bradnova, V. V. Rusakova, Y. L. Xia, M. Ochs, S. P. Kharlamov, J. J. Lord, S. Dhamija, V. G. Bogdanov, J. Grote, Z.V. Anzon, Y.M. Qin, V. S. Navotny, M. M. Chernyavski, G. S. Kalyachkina, A.M. Seitimbetov, Bhartendu K. Singh, M. I. Tretyakova, U.I. Tuleeva, R. Sethi, S. K. Gupta, V. A. Plyushchev, N. K. Rao, S. Kitroo, X. Cai, S. Lokanatan, L. G. Sarkisova, A. S. Gaitinov, Janka Vrlakova, A.K. Musaeva, P. Y. Zheng, D. C. Zhou, B.P. Tursunov, K. G. Gulamov, V. Kumar, V. S. Bhatia, Alexander Kovalenko, C.B. Yang, T. P. Trofimova, A. M. Bakich, G. Z. Eligbaeva, Anju Bhasin, N. Saidkhanov, L. S. Liu, V. G. Larionova, S. A. Krasnov, K. B. Bhalla, G. I. Orlova, L. N. Svechnikova, N. V. Maslennikova, M. Thotova, S. K. Badyal, E.K. Kanygian, R. Amirikas, G. S. Shabratova, Z. Q. Weng, R. Raniwala, N. S. Lukicheva, S. I. Zhokhova, Evert Anders Stenlund, S. B. Luo, S. N. Shpilev, R. J. Wilkes, L. E. Eremenko, Bo Jakobsson, S. Vokal, V. R. Sarkisyan, S.Z. Nasyrov, Z. I. Solovjeva, S. Kachroo, C. Graf, K. Söderström, L. P. Chernova, D. H. Zhang, I. Y. Chasnikov, Y. A. Alexandrov, N. V. Petrov, D. Skelding, L.S. Peak, N. G. Peresadko, E. S. Basova, S. Garpman, X.R. Wang, N. P. Andreeva, S. G. Gerassimov, and L. K. Mangotra
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Large Hadron Collider, Lead (geology), Physics::Instrumentation and Detectors, Nuclear Theory, Physics::Accelerator Physics, Particle, High Energy Physics::Experiment, Nuclear Experiment
Abstract: In this talk we will present some of the recent results from the experiments E863 and EMU12 using the BNL AGS Au-beam at 11.6 A GeV/c and the CERN SPS Pb-beam at 158 A GeV, respectively. Aspects on the particle production and on the target break-up will be discussed. The results are compared with model expectations. The lead data is here shown for the first time.
Published: 1995

19. Charged particle density distributions in Au induced interactions with emulsion nuclei at 10.7 A GeV

Author: E. R. Ganssauge, A.M. Seitimbetov, N. K. Rao, S. Lokanatan, A. S. Gaitinov, M. Tothova, L. E. Eremenko, P. Y. Zheng, I. Otterlund, M. I. Tretyakova, Bo Jakobsson, S. Vokal, N. V. Petrov, X. Cai, V. R. Sarkisyan, S.Z. Nasyrov, Z. I. Solovjeva, B.P. Tursunov, S. P. Kharlamov, M. Roeper, V. G. Bogdanov, Z.V. Anzon, R. J. Wilkes, Y.M. Qin, N. P. Andreeva, Evert Anders Stenlund, Anju Bhasin, N. Saidkhanov, N. V. Maslennikova, F. A. Avetyan, M. Karabova, D. Skelding, S. N. Shpilev, S. G. Gerassimov, H. Q. Wang, W. Y. Qian, S. Kitroo, M. Ochs, G. I. Orlova, Z. Q. Weng, Janka Vrlakova, M. I. Adamovich, G. S. Kalyachkina, D. A. Carshiev, U.I. Tuleeva, S. I. Zhokhova, C.B. Yang, S.A. Krasnov, Alexander Kovalenko, V. S. Navotny, L. P. Chernova, T. P. Trofimova, S. B. Luo, Y. L. Xia, N. G. Peresadko, E. S. Basova, D. H. Zhang, V. Bradnova, S. Garpman, N. S. Lukicheva, I. Y. Chasnikov, Y. A. Alexandrov, M. M. Chernyavski, S. K. Gupta, V. A. Plyushchev, L. G. Sarkisova, S. Kachroo, L. N. Svechnikova, C. Graf, Renu Arora, D. C. Zhou, K. Söderström, G. S. Shabratova, R. Raniwala, V. S. Bhatia, A. M. Bakich, L. S. Liu, V. G. Larionova, J. J. Lord, J. Grote, I. S. Mittra, C.I. Shakhova, L.S. Peak, S. K. Badyal, K. B. Bhalla, R. Amirikas, L. K. Mangotra, E. K. Kanygina, Y. D. Li, J. Nystrand, V. I. Bubnov, V. V. Rusakova, K. G. Gulamov, V. Kumar, G. Z. Eligbaeva, N. A. Salmanova, T. H. Burnett, V. K. Gupta, S. Dhamija, L. Just, M. M. Aggarwal, N. A. Marutyan, A.Y. Mashkov, I. K. Bazarov, T. Svensson, and S. Mokerjee
Subjects: Physics, Nuclear physics, Momentum, Nuclear and High Energy Physics, Pseudorapidity, Particle, Nuclear emulsion, Nuclear Experiment, Charged particle beam, Spectral line, Charged particle, Fermi Gamma-ray Space Telescope
Abstract: Charged particle pseudorapidity density distributions in Au induced reactions in nuclear emulsion at 10.7 A GeV have been measured. In peripheral events the shower particle distribution exhibits a two peak structure while in central collisions it has a Gaussian shape. The spectator protons appear in the second peak in the pseudorapidity spectra and exhibits a broader momentum distribution than expected from Fermi motion. The produced particle yield in central collisions is not substantially different from phenomenological descriptions based on data from O and S induced reactions.
Published: 1995

20. Fragmentation of relativistic gold nuclei in nuclear emulsion

Author: N. Saidkhanov, T.P. Trofimova, D.A. Carshiev, P.Y. Zheng, E.K. Kanygina, L.S. Liu, L.P. Chernova, I.S. Mittra, S. Vokal, S.G. Gerassimov, J. Grote, S. Kitroo, V. Bradnova, C. Graf, D.H. Zhang, E. Stenlund, B.P. Tursunov, N.V. Petrov, S.B. Luo, N.G. Peresadko, N.S. Lukicheva, V.A. Plyushchev, A.S. Gaitinov, M. Karabová, R. Raniwala, N.K. Rao, G.I. Orlova, V.G. Larionova, G.S. Shabratova, I.Y. Chasnikov, Z.Q. Weng, V.K. Gupta, K.B. Bhalla, Y.L. Xia, L.E. Eremenko, T.H. Burnett, M.M. Chernyavski, G.Z. Eligbaeva, X. Cai, M.I. Adamovich, S.H. Nasyrov, L.S. Peak, S. Garpman, A.M. Bakich, N.A. Salmonova, N.P. Andreeva, M. Ochs, N.A. Marutyan, V.G. Bogdanov, L.G. Sarkisova, S.K. Gupta, Y.M. Qin, B. Jakobsson, F.A. Avetyan, D. Skelding, R. Arora, V. Kumar, Y.D. Li, V.S. Bhatia, D.C. Zhou, U.I. Tuleeva, I.K. Bazarov, E.S. Basova, M. Tothová, A.M. Seitimbetov, G.S. Kalyachkina, J. Nystrand, S. Mokerjee, W.Y. Qian, M. Roeper, S.I. Zhokhova, S. Raniwala, J.J. Lord, V.R. Sarkisyan, Anju Bhasin, C.I. Shakhova, A.D. Kovalenko, S. Dhamija, Janka Vrlakova, Ladislav Just, V.V. Rusakova, N.V. Maslennikova, Z.V. Anzon, S.P. Kharlamov, S.A. Krasnov, H.Q. Wang, S.N. Shiplev, K. G. Gulamov, Madan M. Aggarwal, S.K. Badyal, L.N. Svechnikova, K. Söderström, V.S. Navotny, V.I. Bubnov, S. Kachroo, R.J. Wilkes, E.R. Ganssauge, R. Amirikas, M.I. Tretyakova, C.B. Yang, S. Lokanathan, Z.I. Solovjeva, Y.A. Alexandrov, A.Y. Mashkov, I. Otterlund, and L.K. Mangotra
Subjects: Nuclear physics, Physics, Radiation, Fragmentation (mass spectrometry), Nuclear emulsion, Nuclear Experiment, Instrumentation
Abstract: Basic data are presented on the parameters of fragmentation, multiplicities and angular spectra of low energetic targed associated particles in the interction of 197 Au nuclei of 10.7A GeV.
Published: 1995

21. Tracking high energy heavy-ion interactions with nuclear emulsion

Author: A.M. Seitimbetov, N.P. Adreeva, D.K. Kovalenko, G.S. Shabratova, N.S. Lukicheva, F.A. Avetyan, L.K. Mangotra, V.S. Navotny, C.I. Shakhova, S.B. Luo, N.K. Rao, V.G. Bogdanov, S.K. Badyal, D.A. Carshiev, C.B. Yang, S. Vokal, X. Cai, I.S. Mittra, K.B. Bhalla, S.G. Gerassimov, S. Lokanathan, S. Mokerjee, L.S. Peak, A.Y. Mashkov, G.Z. Eligbaeva, A.M. Bakish, Z.I. Solovjeva, S.I. Zhokhova, Y.D. Li, Y.L. Xia, S.K. Gupta, S.Z. Nasyrov, A.S. Gaitinov, S. Garpman, J.J. Lord, L.G. Sarkisova, R.J. Wilkes, S.N. Shiplev, V.R. Sarkisyan, S.P. Kharlamov, K. G. Gulamov, S. Kachroo, Z.Q. Weng, V.S. Bhatia, M.I. Tretyakova, K. Söderström, N.A. Salmanova, D.C. Zhou, V.A. Plyushchev, H. Q. Wang, T.H. Burnett, Z.V. Anzon, J. Vrláková, J. Grote, N.A. Marutyan, Evert Anders Stenlund, V.V. Rusakova, V. Bradnova, N.G. Peresadko, Joakim Nystrand, V.I. Bubnov, V. Kumar, N.V. Maslennikova, S. Kitroo, S.A. Krasnov, N. Saidkhanov, B.P. Tursunov, L. Just, V.K. Gupta, E.S. Basova, A. Basin, Bo Jakobsson, R. Raniwala, G.S. Kalyachkina, D. Skelding, M. Karábova, L.E. Eremenko, S. Dhamija, L.N. Svechnikova, Madan M. Aggarwal, M.M. Chernyavski, R. Arora, C. Graf, W.Y. Qian, L.P. Chernova, M. Tothová, G.I. Orlova, Y.M. Qin, D.H. Yang, N.V. Petrov, U.I. Tuleeva, E.R. Ganssauge, S. Raniwala, I.K. Bazarov, E.K. Kanygina, P.Y. Zheng, M. Roeper, L.S. Liu, R. Amirikas, Y.A. Alexandrov, M. Ochs, T.P. Trofimova, I.Y. Chasnikov, M.I. Adamovich, and V.G. Larionova
Subjects: Radiation, Large Hadron Collider, Physics::Instrumentation and Detectors, Chemistry, Nuclear Theory, chemistry.chemical_element, Ion, Nuclear physics, Fragmentation (mass spectrometry), Radiation damage, High Energy Physics::Experiment, Nuclear emulsion, Irradiation, Impact parameter, Nuclear Experiment, Instrumentation, Helium
Abstract: EMU01 experiments tracking high energy heavy-ion interactions with nuclear emulsion detectors are performed at the BNL AGS and the CERN SPS. Some unique measurements are presented. As an illustration impact parameter selections, projectile fragmentation and particle production are discussed. Recent results from gold nucleus reactions at 11 A GeV are given.
Published: 1995

22. Helium production in 10.7 A GeV Au induced nucleus-nucleus collisions

Author: D. Skelding, L. K. Mangotra, R. J. Wilkes, M. I. Tretyakova, X. Cai, M. Ochs, J. J. Lord, D. C. Zhou, J. Grote, S. Kitroo, N. A. Salmanova, Janka Vrlakova, A. M. Bakich, B.P. Tursunov, L. E. Eremenko, I. S. Mittra, L. P. Chernova, Evert Anders Stenlund, Bo Jakobsson, M. Karabova, H. Q. Wang, S.Z. Nasyrov, Z. I. Solovjeva, S. Vokal, N. P. Andreeva, C.I. Shakhova, W. Y. Qian, V. R. Sarkisyan, S. Kachroo, D. H. Zhang, N. S. Lukicheva, S. P. Kharlamov, S. K. Badyal, C. Graf, S. G. Gerassimov, V. G. Bogdanov, Y. L. Xia, I. Y. Chasnikov, Z.V. Anzon, K. Söderström, E. R. Ganssauge, Y. A. Alexandrov, V. I. Bubnov, Y.M. Qin, N. V. Petrov, G. S. Kalyachkina, M. I. Adamovich, L. Just, M. Tothova, V. V. Rusakova, F. A. Avetyan, Anju Bhasin, M. Roeper, M. M. Chernyavski, N. Saidkhanov, L.S. Peak, S. B. Luo, A. S. Gaitinov, N. G. Peresadko, E. S. Basova, K. B. Bhalla, R. Amirikas, I. Otterlund, Z. Q. Weng, L. G. Sarkisova, S. Garpman, S. N. Shpilev, Alexander Kovalenko, D. A. Carshiev, M. M. Aggarwal, U.I. Tuleeva, Sudhir Raniwala, N. V. Maslennikova, T. P. Trofimova, N. A. Marutyan, A.Y. Mashkov, I. K. Bazarov, E. K. Kanygina, T. H. Burnett, S. I. Zhokhova, S. Dhamija, V. K. Gupta, Y. D. Li, K. G. Gulamov, V. Kumar, P. Y. Zheng, G. Z. Eligbaeva, A.M. Seitimbetov, N. K. Rao, S. Lokanatan, J. Nystrand, V. Bradnova, S. Mokerjee, L. N. Svechnikova, G. S. Shabratova, R. Raniwala, V. S. Navotny, G. I. Orlova, S. K. Gupta, V. A. Plyushchev, Renu Arora, V. S. Bhatia, L. S. Liu, V. G. Larionova, C.B. Yang, and S.A. Krasnov
Subjects: Physics, Nuclear and High Energy Physics, chemistry.chemical_element, Nuclear physics, medicine.anatomical_structure, chemistry, Fragmentation (mass spectrometry), Total angular momentum quantum number, Angular momentum of light, Transverse momentum, medicine, Atomic physics, Nuclear Experiment, Nucleus, Helium
Abstract: Angular distributions of projectile-associated He fragments from Au induced reactions in nuclear emulsions at 10.7 A GeV have been measured with a precision of ±0.1 mrad. Two emission components are indubitably appearing, one representing fragmentation of a fermionic system while the other one exhibits large transverse momentum transfer. Possible explanations for the latter component are discussed.
Published: 1994

23. Measurement of (p, p) elastic cross sections for C, O and Si in the energy range 1.0–3.5 MeV

Author: S.P. Dooley, R. Amirikas, and David N. Jamieson
Subjects: Superconductivity, Elastic scattering, Nuclear and High Energy Physics, Range (particle radiation), Materials science, Proton, Nuclear Theory, Mass spectrometry, Spectral line, Atomic physics, Nuclear Experiment, Instrumentation, Stoichiometry, Energy (signal processing)
Abstract: Cross sections for the elastic scattering of protons from thin natural C, O and Si targets have been measured for proton bombarding energies between 1.0 and 3.5 MeV at lab angles of 170°, 150° and 110°. The results have been presented graphically and have been fitted with Breit-Wigner functions. The parameters of the fits are provided. These parameters may be used to simulate spectra from backscattering spectrometry (BS) analysis of sample composition. Some examples are shown for the measurement of SiC and YBaCuO superconductor stoichiometry.
Published: 1993

24. Measurement of single muons at forward rapidity inp+pcollisions ats=200 GeVand implications for charm production

Author: R. du Rietz, Josh Moss, M. Tamai, B. D. Fox, C. L. Silva, S. Afanasiev, E. Kistenev, A. Ster, J. Chiba, Masayasu Ishihara, Susumu Sato, M. Muniruzzaman, F. Staley, M. Sakai, J. T. Mitchell, Vladislav Manko, M. D. Marx, T. Chujo, X. Camard, A. Parmar, Christine Angela Aidala, J. S. Chai, Norio Saito, F. Messer, D. Hornback, G. C. Mishra, Takao Sakaguchi, C. Klein-Boesing, I. Tserruya, Yu. Efremenko, R. A. Soltz, M. Grosse Perdekamp, K. Tanida, V. I. Kochetkov, M. Heffner, O. Dietzsch, A. D. Frawley, V. Singh, G. B. Kim, D. Koehler, V. S. Pantuev, L. Aphecetche, S. Kametani, P. L. McGaughey, G. Gogiberidze, M. Harvey, S. Bathe, S. H. Aronson, K. A. Drees, Kensuke Homma, E. Melnikov, S. Chernichenko, H. Lim, B. Bassalleck, F. Mühlbacher, L. Ewell, Hirohiko Sato, E. J. Desmond, V. Bumazhnov, Dipanwita Dutta, Junji Tojo, S. K. Tuli, A. G. Hansen, Shingo Sakai, W. Holzmann, Alberto Baldisseri, Jen-Chieh Peng, M. Hibino, Y. Tanaka, T. K. Shea, J. M. Burward-Hoy, J. Park, J. E. Frantz, J. H. Kang, T. L. Thomas, J. S. Haggerty, Julia Velkovska, A. Romana, R. S. Towell, V. Babintsev, K. Okada, Y. I. Makdisi, Y. Watanabe, Hiroaki Ohnishi, B. Khachaturov, J. B. Choi, M. Chiu, Ajit Kumar Mohanty, T. Matsumoto, Dong Jo Kim, Osamu Jinnouchi, H. En'yo, P. Constantin, M. J. Leitch, David Olle Rickard Silvermyr, N. N. Ajitanand, J. Milan, Herve Borel, Ryugo S. Hayano, T. A. Shibata, A. Soldatov, R. Amirikas, Y. Riabov, M. Rosati, S. Garpman, K. Kiyoyama, M. Velkovsky, H. Tsuruoka, I. E. Yushmanov, Alexander Milov, Kenta Shigaki, A. Glenn, Shih-Chang Lee, E. H. Kim, W. C. Chang, E. P. Hartouni, B. K. Nandi, O. Drapier, H. A. Gustafsson, Joakim Nystrand, M. J. Tannenbaum, D. P. Morrison, David D'Enterria, V. E. Semenov, Minghui Liu, H. J. Kim, V. V. Ikonnikov, A. S. Nyanin, Takahiro Nakamura, M. Issah, A. A. Vinogradov, Henrik Tydesjö, Y. J. Kwon, Roy A. Lacey, D. Isenhower, K. S. Sim, R. P. Pisani, P. Tarján, Sean A. Kelly, D. Bucher, Jiangyong Jia, Y. Goto, R. E. Mischke, C. Zhang, L. Villatte, M. E. Sadler, Jason Newby, L. Sanfratello, Viktor Veszpremi, E. Vznuzdaev, S. Borenstein, German Martinez, Kenneth Francis Read, S. Butsyk, N. Hayashi, J. Murata, Alexei Khanzadeev, Nikolay Tyurin, A. Durum, C. L. Woody, T. Shiina, N. Bruner, A. Devismes, E. Stenlund, J. G. Boissevain, Vladimir Samsonov, I. Otterlund, S. S. Adler, G. S. Kyle, James Alexander, R. Azmoun, Senta Greene, K. Katou, H. Buesching, Y. Liu, Viktor Riabov, C. Y. Chi, M. Nara, H. Delagrange, D. S. Brown, Y. Jeong, R. Averbeck, Byung-Sik Hong, A. Bazilevsky, Wei Xie, Xingguo Li, Philippe Rosnet, N. Kamihara, A. Kiyomichi, Alexandre Lebedev, E. O'Brien, D. Mukhopadhyay, C. Pinkenburg, A. Deshpande, M. Kopytine, S. Batsouli, S. Zhou, J. L. Nagle, T. C. Awes, Y. Cobigo, Kyoichiro Ozawa, Jun Kikuchi, I. V. Sourikova, H. Torii, D. M. Lee, M. Stepanov, I. Ravinovich, D. E. Fields, S. P. Sorensen, B. V. Jacak, F. Plasil, G. Roche, T. Kohama, F. Matathias, Peter M. Nilsson, K. Imai, A. K. Purwar, S. S. Ryu, Y. Yang, J. Gosset, C. P. Singh, J. P. Sullivan, J. G. Lajoie, T. Hachiya, A. P.T. Palounek, T. E. Miller, R. Santo, I. J. Choi, A. Enokizono, S. Esumi, V. Ladygin, M. Gonin, Jan Rak, B. M. Johnson, K. Kurita, S. Yokkaichi, M. Sivertz, J. M. Heuser, W. A. Zajc, V. Baublis, A. Denisov, V. Cianciolo, W. Guryn, Sergey Fokin, S. F. Pate, R. Granier de Cassagnac, A. Hoover, A. Isupov, A. Drees, X. R. Wang, Brian Cole, T. Peitzmann, V. Papavassiliou, Saskia Mioduszewski, S. Sawada, J. D. Tepe, A. Franz, Yves Roland Schutz, S. S. Kapoor, Hideki Hamagaki, G. David, D. Pal, G. R. Young, E. M. Takagui, C. H. Kuberg, S. P. Stoll, G. Bunce, D. Jouan, M. A. Volkov, C. A. Ogilvie, N. Grau, T. K. Hemmick, Yasuo Miake, L. Kochenda, Y. Kuroki, W. Y. Jang, P. W. Stankus, K. N. Barish, Do-Won Kim, P. J. Kroon, Dong-Hun Kim, M. Ono, M. L. Brooks, X. He, V. Peresedov, H. Masui, A. G. Litvinenko, A. Kozlov, R. Seto, Martin Purschke, D. Kotchetkov, S. Bhagavatula, Z. Fraenkel, R. K. Choudhury, S. C. Johnson, Y. J. Mao, M. J. Kweon, Atsushi Taketani, V.A. Onuchin, S. Belikov, K. S. Joo, K. El Chenawi, M. R. Shaw, P. Chand, H. Kobayashi, Agneta Oskarsson, Y. Berdnikov, Y. Akiba, S. Nagamiya, Kazuhiro Tanaka, Klaus Johannes Reygers, S. Y. Fung, H. W. Van Hecke, John Hill, K. Oyama, Toru Sugitate, François Fleuret, T. Ichihara, F. K. Wohn, T. K. Ghosh, Matthew G. Reuter, I. D. Ojha, Alexander Malakhov, L. S. Zolin, P. D. Barnes, A. Yanovich, S. N. White, W. E. Sondheim, Charles Maguire, and S. Leckey
Subjects: Quark, Physics, Nuclear and High Energy Physics, Particle physics, Muon, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Perturbative QCD, 7. Clean energy, 01 natural sciences, Particle identification, Charm quark, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, Rapidity, Charm (quantum number), Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract: Muon production at forward rapidity (1.5
Published: 2007

25. Detailed study of high-pTneutral pion suppression and azimuthal anisotropy inAu+Aucollisions atsNN=200GeV

Author: Shih-Chang Lee, S. Afanasiev, K. S. Sim, A. Ster, V. S. Pantuev, M. Harvey, J. S. Chai, E. H. Kim, Junji Tojo, E. J. Desmond, T. Ichihara, F. Messer, M. Heffner, S. S. Adler, G. S. Kyle, P. L. McGaughey, F. K. Wohn, T. K. Ghosh, Matthew G. Reuter, M. Rosati, T. L. Thomas, K. Imai, James Alexander, M. Hibino, Y. Jeong, R. Averbeck, Byung-Sik Hong, A. Bazilevsky, Philippe Rosnet, K. Okada, J. Park, Alexandre Lebedev, J. M. Burward-Hoy, S. C. Johnson, K. Tanida, I. D. Ojha, Alexander Malakhov, D. M. Lee, S. Esumi, M. Velkovsky, M. Chiu, Ajit Kumar Mohanty, T. A. Shibata, N. Kamihara, R. A. Soltz, H. Borel, Y. J. Mao, M. J. Kweon, H. En'yo, P. Constantin, Norio Saito, M. J. Leitch, F. Matathias, N. Grau, Jen-Chieh Peng, J. Chiba, H. Tsuruoka, M. Sakai, M. Grosse Perdekamp, L. S. Zolin, J. G. Boissevain, A. Drees, A. A. Vinogradov, Henrik Tydesjö, P. D. Barnes, Y. Berndnikov, Ryugo S. Hayano, G. C. Mishra, P. W. Stankus, K. Katou, Jiangyong Jia, A. Yanovich, Y. Yang, C. P. Singh, R. Azmoun, V. I. Kochetkov, M. A. Volkov, K. Kiyoyama, V. Babinstev, B. K. Nandi, Y. Goto, W. A. Zajc, Takao Sakaguchi, C. Klein-Boesing, S. Y. Fung, Y. J. Kwon, A. Kiyomichi, C. Pinkenburg, Dong Jo Kim, Osamu Jinnouchi, Jan Rak, G. Gogiberidze, C. A. Ogilvie, Y. Tanaka, T. K. Shea, L. Sanfratello, D. E. Fields, B. V. Jacak, T. K. Hemmick, B. D. Fox, B. M. Johnson, A. D. Frawley, V. Baublis, A. Denisov, V. Cianciolo, D. Isenhower, Y. Riabov, S. Borenstein, P. Chand, A. Isupov, W. Guryn, David Olle Rickard Silvermyr, D. Mukhopadhyay, John Hill, K. Oyama, R. Granier de Cassagnac, M. Stepanov, G. Roche, I. Tserruya, R. Amirikas, I. E. Yushmanov, Yasuo Miake, J. T. Mitchell, Yu. Efremenko, L. Kochenda, B. Khachaturov, A. K. Purwar, Sergey Fokin, S. H. Aronson, Toru Sugitate, Do-Won Kim, P. J. Kroon, Y. Cobigo, J. Gosset, J. P. Sullivan, German Martinez, V. Singh, Y. Kuroki, W. Y. Jang, Vladislav Manko, J. E. Frantz, T. Matsumoto, Dong-Hun Kim, Brian Cole, R. S. Towell, Kenta Shigaki, François Fleuret, G. B. Kim, D. Koehler, W. Holzmann, M. D. Marx, A. Hoover, Y. I. Makdisi, S. Garpman, P. Tarján, Sean A. Kelly, Viktor Veszpremi, S. N. White, S. P. Stoll, O. Dietzsch, Atsushi Taketani, Joakim Nystrand, T. Chujo, V.A. Onuchin, S. Belikov, K. S. Joo, K. A. Drees, Hirohiko Sato, G. Bunce, S. F. Pate, N. N. Ajitanand, H. A. Gustafsson, C. L. Silva, A. S. Nyanin, A. Glenn, N. Hayashi, S. Yokkaichi, J. M. Heuser, S. K. Tuli, X. Camard, Takahiro Nakamura, T. E. Miller, Dipanwita Dutta, D. Jouan, R. E. Mischke, C. Zhang, X. R. Wang, Hideki Hamagaki, G. David, W. E. Sondheim, G. R. Young, C. Y. Chi, S. Kametani, Alexei Khanzadeev, A. Parmar, Alexander Milov, I. Ravinovich, H. Kobayashi, Masayasu Ishihara, H. J. Kim, C. H. Kuberg, M. E. Sadler, N. Bruner, E. Stenlund, Agneta Oskarsson, Julia Velkovska, A. Durum, V. Papavassiliou, F. Plasil, J. H. Kang, J. S. Haggerty, A. Romana, R. Santo, Senta Greene, O. Drapier, Christine Angela Aidala, Susumu Sato, L. Villatte, A. Enokizono, M. Muniruzzaman, Y. Akiba, D. S. Brown, M. Nara, T. Peitzmann, M. J. Tannenbaum, Viktor Riabov, Saskia Mioduszewski, S. Bathe, S. S. Ryu, D. P. Morrison, J. B. Choi, S. Nagamiya, Kazuhiro Tanaka, Charles Maguire, F. Staley, S. Leckey, Klaus Johannes Reygers, Yves Roland Schutz, Kensuke Homma, V. E. Semenov, S. Batsouli, S. Sawada, J. D. Tepe, R. du Rietz, Josh Moss, A. Franz, E. O'Brien, S. Zhou, S. S. Kapoor, E. Melnikov, V. V. Ikonnikov, D. Pal, E. P. Hartouni, M. Tamai, E. Kistenev, S. Chernichenko, K. El Chenawi, M. R. Shaw, E. M. Takagui, H. Lim, David D'Enterria, A. Devismes, B. Bassalleck, F. Mühlbacher, Y. Watanabe, L. Ewell, Martin Purschke, D. Bucher, R. P. Pisani, A. P.T. Palounek, H. W. Van Hecke, H. Delagrange, Jason Newby, A. G. Hansen, Shingo Sakai, D. Kotchetkov, S. Bhagavatula, Nikolay Tyurin, Z. Fraenkel, M. Kopytine, J. Murata, C. L. Woody, A. Baldisseri, A. Soldatov, R. K. Choudhury, I. V. Sourikova, H. Torii, Hiroaki Ohnishi, J. Milan, X. He, S. Butsyk, V. Peresedov, Vladimir Samsonov, I. Otterlund, H. Buesching, Xingguo Li, V. Ladygin, M. Gonin, J. L. Nagle, T. Kohama, V. Bumazhnov, K. Kurita, H. Masui, M. Sivertz, W. C. Chang, Roy A. Lacey, S. P. Sorensen, Peter M. Nilsson, A. G. Litvinenko, J. G. Lajoie, T. Hachiya, I. J. Choi, A. Kozlov, R. Seto, K. N. Barish, M. Ono, Wei Xie, M. L. Brooks, A. Deshpande, M. Issah, E. Vznuzdaev, T. C. Awes, Kyoichiro Ozawa, T. Shiina, Jun Kikuchi, Yi Liu, L. Aphecetche, Minghui Liu, and Kenneth Francis Read
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Plane (geometry), media_common.quotation_subject, Parton, 01 natural sciences, Asymmetry, Delta baryon, Nuclear physics, Pion, Yield (chemistry), 0103 physical sciences, Nuclear Experiment, 010306 general physics, Anisotropy, Scaling, media_common
Abstract: Measurements of neutral pion (pi(0)) production at midrapidity in root s(NN)=200 GeV Au+Au collisions as a function of transverse momentum, p(T), collision centrality, and angle with respect to reaction plane are presented. The data represent the final pi(0) results from the PHENIX experiment for the first RHIC Au+Au run at design center-of-mass energy. They include additional data obtained using the PHENIX Level-2 trigger with more than a factor of 3 increase in statistics over previously published results for p(T)>6 GeV/c. We evaluate the suppression in the yield of high-p(T) pi(0)'s relative to pointlike scaling expectations using the nuclear modification factor R-AA. We present the p(T) dependence of R-AA for nine bins in collision centrality. We separately integrate R-AA over larger p(T) bins to show more precisely the centrality dependence of the high-p(T) suppression. We then evaluate the dependence of the high-p(T) suppression on the emission angle Delta phi of the pions with respect to event reaction plane for seven bins in collision centrality. We show that the yields of high-p(T) pi(0)'s vary strongly with Delta phi, consistent with prior measurements 1,2. We show that this variation persists in the most peripheral bin accessible in this analysis. For the peripheral bins we observe no suppression for neutral pions produced aligned with the reaction plane, whereas the yield of pi(0)'s produced perpendicular to the reaction plane is suppressed by a factor of similar to 2. We analyze the combined centrality and Delta phi dependence of the pi(0) suppression in different p(T) bins using different possible descriptions of parton energy loss dependence on jet path-length averages to determine whether a single geometric picture can explain the observed suppression pattern.
Published: 2007

26. Measurement of density correlations in pseudorapidity via charged particle multiplicity fluctuations in Au+Au collisions atsNN=200GeV

Author: M. Chiu, Ajit Kumar Mohanty, T. A. Shibata, K. Kiyoyama, Y. Yang, C. P. Singh, Hiroaki Ohnishi, N. N. Ajitanand, B. K. Nandi, Jen-Chieh Peng, S. Kametani, Takahiro Nakamura, B. M. Johnson, J. Milan, V.A. Onuchin, M. E. Sadler, D. Isenhower, A. Toia, H. J. Kim, I. V. Sourikova, H. Torii, A. Durum, J. T. Mitchell, D. E. Fields, B. V. Jacak, S. Butsyk, Vladimir Samsonov, Yi Liu, A. K. Purwar, A. Isupov, D. S. Brown, I. Otterlund, German Martinez, R. Azmoun, J. H. Kang, J. S. Haggerty, A. Romana, Norio Saito, R. A. Soltz, H. Borel, David D'Enterria, Brian Cole, L. Villatte, Do-Won Kim, P. J. Kroon, Vladislav Manko, Dong Jo Kim, Alexei Khanzadeev, S. Belikov, K. S. Joo, Osamu Jinnouchi, Dong-Hun Kim, S. Batsouli, L. Aphecetche, M. D. Marx, M. Grosse Perdekamp, N. Bruner, E. Stenlund, D. Mukhopadhyay, S. P. Stoll, Charles Maguire, S. Leckey, A. Devismes, R. P. Pisani, O. Dietzsch, B. D. Fox, V. Babintsev, J. L. Nagle, A. G. Hansen, H. Buesching, K. N. Barish, K. Tanida, T. Chujo, T. Peitzmann, Saskia Mioduszewski, Y. Cobigo, V. I. Kochetkov, G. Bunce, I. Ravinovich, I. Tserruya, Yu. Efremenko, X. Camard, Shingo Sakai, R. du Rietz, Josh Moss, J. Gosset, E. H. Kim, M. Ono, M. Tamai, Nikolay Tyurin, H. Kobayashi, A. Parmar, J. Chiba, F. Plasil, V. Singh, Dipanwita Dutta, M. Sakai, H. Delagrange, D. Jouan, J. P. Sullivan, A. P.T. Palounek, T. Kohama, E. Kistenev, Xingguo Li, T. L. Thomas, Christine Angela Aidala, Yves Roland Schutz, David Olle Rickard Silvermyr, G. B. Kim, D. Koehler, K. A. Drees, Youngil Kwon, G. R. Young, S. S. Ryu, S. Bathe, Julia Velkovska, S. Esumi, Agneta Oskarsson, M. Kopytine, D. Pal, S. Zhou, B. Khachaturov, G. C. Mishra, Ryugo S. Hayano, M. L. Brooks, Y. Riabov, Hideki Hamagaki, G. David, C. H. Kuberg, Kenta Shigaki, E. M. Takagui, Kensuke Homma, A. Baldisseri, N. Kamihara, V. S. Pantuev, S. Yokkaichi, Y. Berdnikov, J. M. Heuser, W. A. Zajc, X. He, R. S. Towell, E. Melnikov, S. S. Adler, G. S. Kyle, V. Bumazhnov, V. Baublis, M. Rosati, T. Matsumoto, A. S. Nyanin, A. Denisov, V. Cianciolo, S. Chernichenko, Y. Akiba, H. Lim, B. Bassalleck, F. Mühlbacher, L. Ewell, Sergey Fokin, S. P. Sorensen, P. Tarján, Sean A. Kelly, N. Grau, Peter M. Nilsson, F. Matathias, M. Harvey, A. Drees, J. E. Frantz, V. Peresedov, N. Hayashi, James Alexander, Y. Jeong, R. Averbeck, Byung-Sik Hong, A. Bazilevsky, A. Hoover, Takao Sakaguchi, C. Klein-Boesing, A. D. Frawley, Hirohiko Sato, M. Velkovsky, Viktor Veszpremi, S. Nagamiya, S. Garpman, Philippe Rosnet, Kazuhiro Tanaka, Klaus Johannes Reygers, J. B. Choi, A. A. Vinogradov, Henrik Tydesjö, C. Y. Chi, Y. Tanaka, Alexandre Lebedev, T. E. Miller, W. C. Chang, Shih-Chang Lee, K. S. Sim, H. Masui, T. K. Shea, P. W. Stankus, Junji Tojo, H. A. Gustafsson, S. K. Tuli, Y. Watanabe, D. M. Lee, M. A. Volkov, Joakim Nystrand, R. Santo, Roy A. Lacey, A. Enokizono, R. E. Mischke, Jiangyong Jia, Y. Goto, S. H. Aronson, J. G. Lajoie, T. Hachiya, C. Zhang, A. Glenn, Jason Newby, Wei Xie, K. Okada, H. En'yo, P. Constantin, A. Deshpande, Senta Greene, J. Murata, M. Nara, I. J. Choi, V. Ladygin, M. Gonin, C. A. Ogilvie, T. K. Hemmick, K. El Chenawi, M. R. Shaw, S. F. Pate, W. Holzmann, C. L. Silva, E. P. Hartouni, A. G. Litvinenko, Yasuo Miake, Y. I. Makdisi, M. J. Leitch, E. O'Brien, J. G. Boissevain, H. Tsuruoka, K. Kurita, S. Afanasiev, M. Sivertz, L. Kochenda, X. R. Wang, Masayasu Ishihara, K. Katou, A. Kozlov, K. Imai, E. J. Desmond, C. L. Woody, Alexander Milov, A. Ster, Y. Kuroki, W. Y. Jang, R. Seto, M. Hibino, J. Park, A. Kiyomichi, C. Pinkenburg, Susumu Sato, M. Muniruzzaman, P. Chand, M. J. Tannenbaum, F. Staley, Jan Rak, W. Guryn, V. Papavassiliou, M. Stepanov, G. Roche, Martin Purschke, V. V. Ikonnikov, O. Drapier, R. Amirikas, Minghui Liu, R. Granier de Cassagnac, I. E. Yushmanov, D. Bucher, L. Sanfratello, S. Borenstein, M. Issah, K. Ozawa, D. P. Morrison, E. Vznuzdaev, A. Soldatov, T. Shiina, H. W. Van Hecke, V. E. Semenov, S. Sawada, J. D. Tepe, A. Franz, F. Messer, S. S. Kapoor, M. Heffner, D. Kotchetkov, Kenneth Francis Read, G. Gogiberidze, S. Bhagavatula, Z. Fraenkel, R. K. Choudhury, S. C. Johnson, J. S. Chai, Y. J. Mao, M. J. Kweon, P. L. McGaughey, J. M. Burward-Hoy, Atsushi Taketani, S. Y. Fung, T. C. Awes, Jun Kikuchi, John Hill, K. Oyama, Toru Sugitate, François Fleuret, S. N. White, W. E. Sondheim, T. Ichihara, F. K. Wohn, T. K. Ghosh, Matthew G. Reuter, Viktor Riabov, I. D. Ojha, Alexander Malakhov, L. S. Zolin, P. D. Barnes, and A. Yanovich
Subjects: Quantum chromodynamics, Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Multiplicity (mathematics), Nuclear matter, 01 natural sciences, Charged particle, Nuclear physics, Strange matter, Critical point (thermodynamics), Pseudorapidity, 0103 physical sciences, Nuclear Experiment, 010306 general physics, Nucleon
Abstract: Longitudinal density correlations of produced matter in Au+Au collisions at sqrt(s{sub NN})=200 GeV have been measured from the inclusive charged particle distributions as a function of pseudorapidity window sizes. The extracted {alpha}{xi} parameter, related to the susceptibility of the density fluctuations in the long-wavelength limit, exhibits a nonmonotonic behavior as a function of the number of participant nucleons, N{sub part}. A local maximum is seen at N{sub part}{approx}90, with corresponding energy density based on the Bjorken picture of {epsilon}{sub Bj}{tau}{approx}2.4 GeV/(fm{sup 2}c) with a transverse area size of 60 fm2. This behavior may suggest a critical phase boundary based on the Ginzburg-Landau framework.
Published: 2007

27. Introducing a homepage for information retrieval and backup of ground vibration measurements and mechanical vibrations of superconducting modules at desy

Author: R. Amirikas and M. Kubczigk
Subjects: Ground motion, Physics, Vibration, Superconductivity, International Linear Collider, business.industry, Backup, Vibration measurement, Electrical engineering, Free-electron laser, DESY, Atomic physics, business
Abstract: In this paper, 'http://vibration.desy.de', used as a tool for the storage and dissemination of ground motion measurement database of 20 sites around the world and the vibration stability data of superconducting modules for the European X-ray Free Electron Laser (XFEL) and the proposed International Linear Collider (ILC) is introduced. This homepage is open to the scientific community and the data can be utilized for planning of future accelerator facilities and design of future prototypes of module vessels containing cold mass.
Published: 2007

28. Evidence for a Long-Range Component in the Pion Emission Source inAu+AuCollisions atsNN=200 GeV

Author: S. C. Johnson, Y. J. Mao, M. J. Kweon, S. Kametani, Youngil Kwon, T. E. Miller, J. H. Kang, H. Tsuruoka, S. S. Adler, C. L. Silva, J. S. Haggerty, A. Romana, G. S. Kyle, Mate Csanad, R. Santo, James Alexander, J. B. Choi, A. Enokizono, S. Afanasiev, A. Ster, L. Sanfratello, Y. Jeong, R. Averbeck, Byung-Sik Hong, P. Chung, Masayasu Ishihara, F. Messer, A. Bazilevsky, M. Heffner, A. Taranenko, S. Borenstein, G. Gogiberidze, David D'Enterria, V. Bumazhnov, Susumu Sato, K. Ozawa, B. Khachaturov, I. Ravinovich, E. P. Hartouni, Philippe Rosnet, M. Muniruzzaman, S. P. Stoll, T. Matsumoto, Sean A. Kelly, T. L. Thomas, Alexandre Lebedev, Viktor Veszpremi, Joakim Nystrand, Charles Maguire, F. Plasil, T. Peitzmann, Saskia Mioduszewski, G. Bunce, R. P. Pisani, F. Staley, S. Sawada, D. M. Lee, S. Leckey, J. D. Tepe, A. Franz, Atsushi Taketani, Nikolay Tyurin, A. Isupov, Ryugo S. Hayano, S. S. Ryu, V. S. Pantuev, R. du Rietz, Josh Moss, S. S. Kapoor, N. N. Ajitanand, P. Tarján, K. Tanida, J. Gosset, J. P. Sullivan, Y. Riabov, V.A. Onuchin, A. Devismes, S. Belikov, K. S. Joo, M. Harvey, Kenta Shigaki, Senta Greene, M. Nara, W. C. Chang, V. I. Kochetkov, D. Jouan, Hideki Hamagaki, Takahiro Nakamura, G. David, Junji Tojo, I. Tserruya, S. F. Pate, M. Tamai, S. Zhou, Jan Rak, Roy A. Lacey, W. Guryn, K. Okada, C. H. Kuberg, M. A. Volkov, E. Kistenev, O. Dietzsch, H. Delagrange, S. N. White, A. S. Nyanin, E. O'Brien, M. E. Sadler, R. A. Soltz, H. Borel, S. Bathe, R. Granier de Cassagnac, M. Grosse Perdekamp, H. En'yo, P. Constantin, M. J. Leitch, Yves Roland Schutz, C. A. Ogilvie, Dipanwita Dutta, X. R. Wang, Yu. Efremenko, S. P. Sorensen, Yanwen Liu, M. Kopytine, Kensuke Homma, E. Melnikov, S. Yokkaichi, J. M. Heuser, V. Singh, K. El Chenawi, M. R. Shaw, S. Butsyk, T. K. Hemmick, A. Baldisseri, Yasuo Miake, Julia Velkovska, Peter M. Nilsson, Norio Saito, Vladimir Samsonov, A. Durum, M. Rosati, I. Otterlund, V. Papavassiliou, S. Chernichenko, H. Lim, H. Kobayashi, Martin Purschke, M. Velkovsky, Agneta Oskarsson, Shih-Chang Lee, D. Pal, R. Azmoun, G. B. Kim, E. M. Takagui, D. Koehler, D. S. Brown, David Olle Rickard Silvermyr, B. Bassalleck, F. Mühlbacher, L. Ewell, J. G. Boissevain, K. S. Sim, Y. Watanabe, M. Chiu, Ajit Kumar Mohanty, L. Kochenda, Y. Kuroki, Do-Won Kim, P. J. Kroon, A. A. Vinogradov, Henrik Tydesjö, Tamas Ferenc Csorgo, T. A. Shibata, J. G. Lajoie, Jiangyong Jia, T. Hachiya, J. L. Nagle, D. Kotchetkov, S. Bhagavatula, K. Katou, J. T. Mitchell, D. Mukhopadhyay, V. Babintsev, R. S. Towell, Y. Berdnikov, K. Kiyoyama, Dong-Hun Kim, W. Y. Jang, Y. Akiba, Y. Goto, Y. Cobigo, E. H. Kim, D. E. Fields, B. V. Jacak, W. E. Sondheim, A. Kiyomichi, A. G. Hansen, Shingo Sakai, T. Kohama, Z. Fraenkel, C. Pinkenburg, Vladislav Manko, J. E. Frantz, B. K. Nandi, M. D. Marx, K. Imai, I. J. Choi, S. Nagamiya, Kazuhiro Tanaka, Y. Tanaka, M. Stepanov, G. Roche, R. K. Choudhury, V. Ladygin, M. Gonin, D. Isenhower, Klaus Johannes Reygers, N. Grau, N. Kamihara, T. Chujo, A. K. Purwar, T. Ichihara, N. Hayashi, F. K. Wohn, A. Soldatov, X. Camard, A. Glenn, K. Kurita, German Martinez, T. K. Shea, F. Matathias, M. Sivertz, C. Y. Chi, T. K. Ghosh, A. Parmar, Matthew G. Reuter, P. W. Stankus, A. Drees, Hirohiko Sato, S. K. Tuli, I. D. Ojha, Alexander Malakhov, K. N. Barish, G. R. Young, Christine Angela Aidala, I. V. Sourikova, H. Torii, M. Ono, Y. Yang, L. S. Zolin, C. P. Singh, B. M. Johnson, P. D. Barnes, A. Yanovich, Jen-Chieh Peng, Hiroaki Ohnishi, S. Y. Fung, J. Milan, Brian Cole, H. W. Van Hecke, John Hill, K. Oyama, Toru Sugitate, François Fleuret, C. L. Woody, Dong Jo Kim, Osamu Jinnouchi, P. Chand, M. L. Brooks, Alexander Milov, O. Drapier, D. P. Morrison, V. E. Semenov, H. J. Kim, A. G. Litvinenko, H. Buesching, A. Kozlov, R. Seto, L. Villatte, Xingguo Li, X. He, V. Peresedov, H. Masui, J. S. Chai, P. L. McGaughey, J. M. Burward-Hoy, J. Chiba, M. Sakai, Minghui Liu, Kenneth Francis Read, G. C. Mishra, Takao Sakaguchi, C. Klein-Boesing, T. C. Awes, A. D. Frawley, Jun Kikuchi, S. H. Aronson, W. Holzmann, S. Batsouli, Y. I. Makdisi, L. Aphecetche, M. J. Tannenbaum, V. V. Ikonnikov, D. Bucher, A. P.T. Palounek, Wei Xie, A. Deshpande, E. J. Desmond, M. Hibino, S. Garpman, J. Park, R. Amirikas, H. A. Gustafsson, M. I. Nagy, I. E. Yushmanov, M. Issah, Alexei Khanzadeev, E. Vznuzdaev, N. Bruner, E. Stenlund, T. Shiina, R. E. Mischke, C. Zhang, Viktor Riabov, S. Esumi, W. A. Zajc, V. Baublis, A. Denisov, V. Cianciolo, Sergey Fokin, Jason Newby, A. Hoover, J. Murata, and B. D. Fox
Subjects: Physics, Range (particle radiation), Particle physics, SIMPLE (dark matter experiment), 010308 nuclear & particles physics, Component (thermodynamics), Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, General Physics and Astronomy, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Resonance (particle physics), Nuclear physics, Pion, 0103 physical sciences, Halo, Nuclear Experiment, 010306 general physics, Astrophysics::Galaxy Astrophysics
Abstract: Emission source functions are extracted from correlation functions constructed from charged pions produced at midrapidity in Au+Au collisions at s(NN)=200 GeV. The source parameters extracted from these functions at low k(T) give first indications of a long tail for the pion emission source. The source extension cannot be explained solely by simple kinematic considerations. The possible role of a halo of secondary pions from resonance emissions is explored.
Published: 2007

29. High transverse momentum η meson production inp+p,d+Au, and Au+Au collisions atsNN=200GeV

Author: D. E. Fields, B. V. Jacak, A. K. Purwar, N. N. Ajitanand, Takahiro Nakamura, M. E. Sadler, A. Durum, D. S. Brown, M. Rosati, Alexander Milov, S. S. Adler, G. S. Kyle, H. Tsuruoka, Y. Yang, C. P. Singh, Mate Csanad, J. Gosset, B. D. Fox, J. P. Sullivan, N. Willis, James Alexander, T. L. Thomas, M. Velkovsky, R. A. Soltz, H. Borel, R. Kohara, Jan Rak, W. Guryn, Y. Jeong, R. Averbeck, Byung-Sik Hong, B. M. Johnson, T. E. Miller, Alexei Khanzadeev, A. Bazilevsky, O. Drapier, S. Butsyk, Philippe Rosnet, C. H. Kuberg, M. Grosse Perdekamp, J. Chiba, R. Santo, David D'Enterria, C. L. Silva, S. P. Stoll, Hiroaki Ohnishi, J. Milan, N. Bruner, E. Stenlund, Vladimir Samsonov, L. Sanfratello, A. A. Vinogradov, Henrik Tydesjö, N. Grau, Alexandre Lebedev, D. M. Lee, A. Isupov, Xiaopeng Zong, R. P. Pisani, S. Afanasiev, M. Sakai, Ryugo S. Hayano, Robert F. Hobbs, A. Enokizono, E. R. Kinney, D. P. Morrison, V. E. Semenov, S. Borenstein, J. Zimányi, A. Pierson, Masayasu Ishihara, J. S. Chai, K. Ozawa, Nikolay Tyurin, S. Yokkaichi, I. Otterlund, B. Komkov, P. L. McGaughey, K. A. Drees, Youngil Kwon, Yuri Efremenko, J. M. Burward-Hoy, J. M. Heuser, Y. Riabov, Susumu Sato, M. Issah, Jiangyong Jia, Y. Goto, J. M. Qualls, M. Muniruzzaman, S. S.E. Rosendahl, G. Bunce, A. Ster, Kenta Shigaki, Norio Saito, Shih-Chang Lee, M. Kaufman, A. Devismes, M. A. L. Leite, Brian Cole, F. Staley, E. Vznuzdaev, Y. J. Mao, S. Kametani, S. Batsouli, S. Sawada, Paul Stankus, J. D. Tepe, K. Tanida, Y. Tanaka, Jen-Chieh Peng, K. S. Sim, T. K. Shea, Y. Watanabe, A. Franz, F. Kajihara, V. S. Pantuev, Tamas Ferenc Csorgo, G. C. Mishra, V-N. Tram, V. I. Kochetkov, A. S. Nyanin, Pàl Hidas, J. H. Kang, M. Harvey, S. S. Kapoor, J. S. Haggerty, David Olle Rickard Silvermyr, H. Delagrange, T. Shiina, D. Jouan, A. Romana, Yi Liu, B. Espagnon, Junji Tojo, M. A. Volkov, A. V. Kazantsev, R. Durietz, Motoi Inaba, J. L. Nagle, F. Messer, Gerd Joachim Kunde, V. Babintsev, H. Hiejima, S. F. Pate, L. Aphecetche, M. Kopytine, S. Zhou, Takeo Kawabata, I. Shein, M. C. McCain, K. Okada, M. Heffner, A. Taranenko, E. H. Kim, B. Sahlmueller, H. En'yo, T. Peitzmann, P. Constantin, A. Baldisseri, C. A. Ogilvie, J. B. Choi, M. Inuzuka, Soren Pontoppidan Sorensen, Hideki Hamagaki, K. Aoki, X. R. Wang, M. J. Leitch, Takao Sakaguchi, G. Gogiberidze, Saskia Mioduszewski, K. Imai, P. Tarján, Sean A. Kelly, T. K. Hemmick, Viktor Veszpremi, G. David, T. Kohama, H. Pei, Yasuo Miake, V. Papavassiliou, O. Dietzsch, Yoichiro Fukao, K. Das, M. Chiu, Ajit Kumar Mohanty, C. Klein-Boesing, Dong Jo Kim, T. A. Shibata, Sébastien Gadrat, J. G. Boissevain, Masashi Kaneta, B. Khachaturov, T. Matsumoto, K. Katou, K. Hasuko, L. Kochenda, K. Kiyoyama, E. P. Hartouni, Dipanwita Dutta, B. K. Nandi, Osamu Jinnouchi, C. Zhang, Jun Kikuchi, A. Kiyomichi, Xingguo Li, C. Pinkenburg, Hiroyuki Okada, Y. Kuroki, A. D. Frawley, W. Y. Jang, Anne Marie Sickles, Julia Velkovska, E. J. Desmond, I. V. Sourikova, H. Torii, Joakim Nystrand, M. Stepanov, G. Roche, V. Ladygin, M. Gonin, H. J. Kim, D. Isenhower, Senta Greene, M. Nara, Do-Won Kim, P. J. Kroon, V.N. Penev, Dong-Hun Kim, Jean-Pierre Cussonneau, I. Tserruya, German Martinez, V. Bumazhnov, M. P. Comets, M. Togawa, Ferenc Deák, R. G. De Cassagnac, Minghui Liu, N. Kamihara, Wei Xie, M. Hibino, E. O'Brien, V. Singh, A. Deshpande, J. Park, Florian Bauer, F. Matathias, R. Armendariz, Kenneth Francis Read, K. Kurita, L. Villatte, S. H. Aronson, G. B. Kim, A. P.T. Palounek, Yves Roland Schutz, A. Drees, D. Koehler, H. Pereira, M. Sivertz, Y. Tsuchimoto, Charles Maguire, S. Leckey, S. Garpman, R. Amirikas, D. Pal, W. Holzmann, Josh Moss, W. C. Chang, J. L. Drachenberg, I. E. Yushmanov, Maya Hachiya Shimomura, Hirohiko Sato, S. K. Tuli, Roy A. Lacey, H. A. Gustafsson, M. Tamai, E. M. Takagui, R. S. Towell, E. Kistenev, Y. I. Makdisi, Peter M. Nilsson, R. E. Mischke, A. G. Hansen, Shingo Sakai, Ch. Finck, Jason Newby, J. G. Lajoie, T. Hachiya, J. Murata, I. J. Choi, N. Hayashi, Viktor Riabov, C. Y. Chi, M. J. Tannenbaum, S. Esumi, V. V. Ikonnikov, W. A. Zajc, D. Bucher, V. Baublis, A. Denisov, V. Cianciolo, Sergey Fokin, T. Horaguchi, A. Hoover, V.A. Onuchin, S. Belikov, K. S. Joo, K. El Chenawi, M. R. Shaw, Marie Germain, H. W. Van Hecke, S. C. Johnson, M. J. Kweon, A. G. Litvinenko, Y. Le Bornec, Kensuke Homma, E. Melnikov, S. Chernichenko, H. Lim, B. Bassalleck, F. Mühlbacher, L. Ewell, A. Kiss, T. Ichihara, M. Konno, A. Kozlov, F. K. Wohn, T. K. Ghosh, Matthew G. Reuter, G. R. Young, R. Seto, Atsushi Taketani, Henner Buesching, C. L. Woody, M. T. Bjorndal, I. D. Ojha, Alexander Malakhov, J. T. Mitchell, V. Dzhordzhadze, Martin Purschke, P. Chand, Vladislav Manko, X. He, M. D. Marx, L. S. Zolin, W. J. Park, T. Chujo, V. Peresedov, X. Camard, A. Parmar, D. Kotchetkov, S. Bhagavatula, Christine Angela Aidala, P. D. Barnes, A. Yanovich, Z. Fraenkel, H. Masui, R. K. Choudhury, S. N. White, H. Kobayashi, S. Takagi, S. Bathe, Terry C Awes, K. N. Barish, Agneta Oskarsson, Y. Berdnikov, M. Ono, A. Soldatov, W. E. Sondheim, Y. Akiba, S. Nagamiya, Kazuhiro Tanaka, Klaus Johannes Reygers, T. J. Uam, S. Y. Fung, M. L. Brooks, John Hill, K. Oyama, Toru Sugitate, L. D. Isenhower, R. Azmoun, D. Mukhopadhyay, Y. Cobigo, I. Ravinovich, François Fleuret, F. Plasil, S. S. Ryu, Ahmed Al-Jamel, J. E. Frantz, A. Glenn, and V. L. Rykov
Subjects: Physics, Nuclear and High Energy Physics, Annihilation, Meson, 010308 nuclear & particles physics, Nuclear Theory, Parton, Electron, 7. Clean energy, 01 natural sciences, Nuclear physics, Momentum, Deuterium, 0103 physical sciences, Quark–gluon plasma, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract: Inclusive transverse momentum spectra of eta mesons in the range p(T)approximate to 2-12 GeV/c have been measured at midrapidity (vertical bar eta vertical bar gamma gamma channel for the three colliding systems as well as through the eta ->pi(0)pi(+)pi(-) decay mode in p+p and d+Au collisions. The nuclear modification factor in d+Au collisions, R-dAu(p(T))approximate to 1.0-1.1, suggests at most only modest p(T) broadening ("Cronin enhancement"). In central Au+Au reactions, the eta yields are significantly suppressed, with R-AuAu(p(T))approximate to 0.2. The ratio of eta to pi(0) yields is approximately constant as a function of p(T) for the three colliding systems in agreement with the high-p(T) world average of R-eta/pi(0)approximate to 0.5 in hadron-hadron, hadron-nucleus, and nucleus-nucleus collisions for a wide range of center-of-mass energies (root sNN approximate to 3-1800 GeV) as well as, for high scaled momentum x(p), in e(+)e(-) annihilations at root s=91.2 GeV. These results are consistent with a scenario where high-p(T) eta production in nuclear collisions at the Relativistic Heavy Ion Collider is largely unaffected by initial-state effects but where light-quark mesons (pi(0),eta) are equally suppressed due to final-state interactions of the parent partons in the dense medium produced in Au+Au reactions.
Published: 2007

30. Evidence for a long-range component in the pion emission source in Au+Au collisions at sqrt sNN=200 GeV

Author: S S, Adler, S, Afanasiev, C, Aidala, N N, Ajitanand, Y, Akiba, J, Alexander, R, Amirikas, L, Aphecetche, S H, Aronson, R, Averbeck, T C, Awes, R, Azmoun, V, Babintsev, A, Baldisseri, K N, Barish, P D, Barnes, B, Bassalleck, S, Bathe, S, Batsouli, V, Baublis, A, Bazilevsky, S, Belikov, Y, Berdnikov, S, Bhagavatula, J G, Boissevain, H, Borel, S, Borenstein, M L, Brooks, D S, Brown, N, Bruner, D, Bucher, H, Buesching, V, Bumazhnov, G, Bunce, J M, Burward-Hoy, S, Butsyk, X, Camard, J-S, Chai, P, Chand, W C, Chang, S, Chernichenko, C Y, Chi, J, Chiba, M, Chiu, I J, Choi, J, Choi, R K, Choudhury, T, Chujo, P, Chung, V, Cianciolo, Y, Cobigo, B A, Cole, P, Constantin, M, Csanád, T, Csörgo, D, d'Enterria, G, David, H, Delagrange, A, Denisov, A, Deshpande, E J, Desmond, A, Devismes, O, Dietzsch, O, Drapier, A, Drees, R, du Rietz, A, Durum, D, Dutta, Y V, Efremenko, K El, Chenawi, A, Enokizono, H, En'yo, S, Esumi, L, Ewell, D E, Fields, F, Fleuret, S L, Fokin, B D, Fox, Z, Fraenkel, J E, Frantz, A, Franz, A D, Frawley, S-Y, Fung, S, Garpman, T K, Ghosh, A, Glenn, G, Gogiberidze, M, Gonin, J, Gosset, Y, Goto, R, Granier de Cassagnac, N, Grau, S V, Greene, M Grosse, Perdekamp, W, Guryn, H-A, Gustafsson, T, Hachiya, J S, Haggerty, H, Hamagaki, A G, Hansen, E P, Hartouni, M, Harvey, R, Hayano, N, Hayashi, X, He, M, Heffner, T K, Hemmick, J M, Heuser, M, Hibino, J C, Hill, W, Holzmann, K, Homma, B, Hong, A, Hoover, T, Ichihara, V V, Ikonnikov, K, Imai, D, Isenhower, M, Ishihara, M, Issah, A, Isupov, B V, Jacak, W Y, Jang, Y, Jeong, J, Jia, O, Jinnouchi, B M, Johnson, S C, Johnson, K S, Joo, D, Jouan, S, Kametani, N, Kamihara, J H, Kang, S S, Kapoor, K, Katou, S, Kelly, B, Khachaturov, A, Khanzadeev, J, Kikuchi, D H, Kim, D J, Kim, D W, Kim, E, Kim, G-B, Kim, H J, Kim, E, Kistenev, A, Kiyomichi, K, Kiyoyama, C, Klein-Boesing, H, Kobayashi, L, Kochenda, V, Kochetkov, D, Koehler, T, Kohama, M, Kopytine, D, Kotchetkov, A, Kozlov, P J, Kroon, C H, Kuberg, K, Kurita, Y, Kuroki, M J, Kweon, Y, Kwon, G S, Kyle, R, Lacey, V, Ladygin, J G, Lajoie, A, Lebedev, S, Leckey, D M, Lee, S, Lee, M J, Leitch, X H, Li, H, Lim, A, Litvinenko, M X, Liu, Y, Liu, C F, Maguire, Y I, Makdisi, A, Malakhov, V I, Manko, Y, Mao, G, Martinez, M D, Marx, H, Masui, F, Matathias, T, Matsumoto, P L, McGaughey, E, Melnikov, F, Messer, Y, Miake, J, Milan, T E, Miller, A, Milov, S, Mioduszewski, R E, Mischke, G C, Mishra, J T, Mitchell, A K, Mohanty, D P, Morrison, J M, Moss, F, Mühlbacher, D, Mukhopadhyay, M, Muniruzzaman, J, Murata, S, Nagamiya, J L, Nagle, M, Nagy, T, Nakamura, B K, Nandi, M, Nara, J, Newby, P, Nilsson, A S, Nyanin, J, Nystrand, E, O'Brien, C A, Ogilvie, H, Ohnishi, I D, Ojha, K, Okada, M, Ono, V, Onuchin, A, Oskarsson, I, Otterlund, K, Oyama, K, Ozawa, D, Pal, A P T, Palounek, V, Pantuev, V, Papavassiliou, J, Park, A, Parmar, S F, Pate, T, Peitzmann, J-C, Peng, V, Peresedov, C, Pinkenburg, R P, Pisani, F, Plasil, M L, Purschke, A K, Purwar, J, Rak, I, Ravinovich, K F, Read, M, Reuter, K, Reygers, V, Riabov, Y, Riabov, G, Roche, A, Romana, M, Rosati, P, Rosnet, S S, Ryu, M E, Sadler, N, Saito, T, Sakaguchi, M, Sakai, S, Sakai, V, Samsonov, L, Sanfratello, R, Santo, H D, Sato, S, Sato, S, Sawada, Y, Schutz, V, Semenov, R, Seto, M R, Shaw, T K, Shea, T-A, Shibata, K, Shigaki, T, Shiina, C L, Silva, D, Silvermyr, K S, Sim, C P, Singh, V, Singh, M, Sivertz, A, Soldatov, R A, Soltz, W E, Sondheim, S P, Sorensen, I V, Sourikova, F, Staley, P W, Stankus, E, Stenlund, M, Stepanov, A, Ster, S P, Stoll, T, Sugitate, J P, Sullivan, E M, Takagui, A, Taketani, M, Tamai, K H, Tanaka, Y, Tanaka, K, Tanida, M J, Tannenbaum, A, Taranenko, P, Tarján, J D, Tepe, T L, Thomas, J, Tojo, H, Torii, R S, Towell, I, Tserruya, H, Tsuruoka, S K, Tuli, H, Tydesjö, N, Tyurin, H W, van Hecke, J, Velkovska, M, Velkovsky, V, Veszprémi, L, Villatte, A A, Vinogradov, M A, Volkov, E, Vznuzdaev, X R, Wang, Y, Watanabe, S N, White, F K, Wohn, C L, Woody, W, Xie, Y, Yang, A, Yanovich, S, Yokkaichi, G R, Young, I E, Yushmanov, W A, Zajc, C, Zhang, S, Zhou, S J, Zhou, and L, Zolin
Abstract: Emission source functions are extracted from correlation functions constructed from charged pions produced at midrapidity in Au+Au collisions at sqrt[s(NN)]=200 GeV. The source parameters extracted from these functions at low k(T) give first indications of a long tail for the pion emission source. The source extension cannot be explained solely by simple kinematic considerations. The possible role of a halo of secondary pions from resonance emissions is explored.
Published: 2006

31. Common Suppression Pattern ofηandπ0Mesons at High Transverse Momentum inAu+AuCollisions atsNN=200 GeV

Author: N. Kamihara, F. Matathias, A. Drees, I. Ravinovich, Sean A. Kelly, M. A. Volkov, A. Devismes, B. Khachaturov, V.A. Onuchin, C. A. Ogilvie, S. P. Stoll, T. K. Hemmick, F. Plasil, G. Bunce, T. Ichihara, Yasuo Miake, D. Jouan, L. Kochenda, S. F. Pate, Y. Kuroki, W. Y. Jang, V. S. Pantuev, M. Rosati, Viktor Veszpremi, T. Matsumoto, T. Peitzmann, F. K. Wohn, T. K. Ghosh, S. Belikov, K. S. Joo, A. Isupov, S. S. Ryu, Matthew G. Reuter, V. Bumazhnov, I. D. Ojha, M. Harvey, M. Velkovsky, Saskia Mioduszewski, Alexander Malakhov, H. Delagrange, S. S. Adler, G. S. Kyle, Alexander Milov, Yves Roland Schutz, B. D. Fox, X. R. Wang, Y. Watanabe, S. Garpman, M. Kopytine, Junji Tojo, J. Gosset, A. A. Vinogradov, Henrik Tydesjö, S. Zhou, Senta Greene, Joakim Nystrand, Hiroaki Ohnishi, G. R. Young, D. Pal, James Alexander, Jiangyong Jia, Y. Goto, M. Nara, J. P. Sullivan, K. N. Barish, O. Drapier, L. S. Zolin, J. Milan, V. Papavassiliou, E. M. Takagui, A. G. Hansen, Y. Jeong, R. Averbeck, Shingo Sakai, E. O'Brien, Y. I. Makdisi, A. Soldatov, Hideki Hamagaki, D. P. Morrison, M. Ono, Y. Yang, K. Okada, Jan Rak, D. E. Fields, W. Guryn, Byung-Sik Hong, B. V. Jacak, A. Bazilevsky, C. P. Singh, R. A. Soltz, G. David, C. H. Kuberg, K. El Chenawi, M. R. Shaw, H. A. Gustafsson, P. D. Barnes, A. Yanovich, K. Tanida, J. E. Frantz, V. I. Kochetkov, P. Tarján, R. Granier de Cassagnac, T. E. Miller, B. Sahlmueller, B. M. Johnson, S. Afanasiev, A. Ster, M. Issah, A. K. Purwar, M. Grosse Perdekamp, S. Bathe, R. Santo, A. Enokizono, W. C. Chang, V. E. Semenov, H. En'yo, S. Yokkaichi, P. Constantin, J. M. Heuser, M. J. Leitch, Martin Purschke, J. B. Choi, R. E. Mischke, C. Zhang, S. N. White, S. Sawada, J. D. Tepe, Kensuke Homma, H. Tsuruoka, E. Melnikov, Roy A. Lacey, A. Franz, N. N. Ajitanand, F. Messer, E. Vznuzdaev, D. Kotchetkov, S. Bhagavatula, M. J. Tannenbaum, Philippe Rosnet, O. Dietzsch, Takahiro Nakamura, David Olle Rickard Silvermyr, Jen-Chieh Peng, S. Chernichenko, Herve Borel, S. Butsyk, S. S. Kapoor, Brian Cole, E. P. Hartouni, M. Heffner, V. V. Ikonnikov, J. G. Boissevain, I. V. Sourikova, H. Lim, H. Torii, R. S. Towell, Shih-Chang Lee, M. E. Sadler, B. Bassalleck, F. Mühlbacher, Alberto Baldisseri, M. Chiu, Ajit Kumar Mohanty, T. A. Shibata, Vladimir Samsonov, I. Otterlund, Viktor Riabov, Alexandre Lebedev, T. L. Thomas, T. Shiina, Dipanwita Dutta, K. S. Sim, Y. J. Kwon, K. Kiyoyama, L. Ewell, A. Durum, Yi Liu, M. L. Brooks, S. Batsouli, Z. Fraenkel, Julia Velkovska, G. Gogiberidze, D. Bucher, B. K. Nandi, K. Katou, D. M. Lee, David D'Enterria, W. E. Sondheim, D. S. Brown, Ryugo S. Hayano, Do-Won Kim, P. J. Kroon, L. Sanfratello, S. Borenstein, Dong-Hun Kim, H. Hiejima, C. L. Silva, D. Isenhower, R. K. Choudhury, Y. Riabov, S. C. Johnson, K. Ozawa, J. Chiba, X. He, A. Kiyomichi, J. T. Mitchell, A. Glenn, H. J. Kim, C. Pinkenburg, Kenta Shigaki, German Martinez, N. Hayashi, Masayasu Ishihara, Y. J. Mao, M. J. Kweon, L. Aphecetche, M. Sakai, K. Imai, S. Y. Fung, R. P. Pisani, Vladislav Manko, Susumu Sato, A. S. Nyanin, Dong Jo Kim, M. Muniruzzaman, M. D. Marx, J. L. Nagle, C. Y. Chi, G. C. Mishra, F. Staley, V. Peresedov, Osamu Jinnouchi, N. Grau, M. Stepanov, G. Roche, Takao Sakaguchi, E. H. Kim, Nikolay Tyurin, S. Kametani, T. Chujo, T. Kohama, C. Klein-Boesing, John Hill, K. Oyama, C. L. Woody, X. Camard, H. Buesching, A. Parmar, J. H. Kang, I. Tserruya, A. P.T. Palounek, Toru Sugitate, A. D. Frawley, P. W. Stankus, Christine Angela Aidala, J. S. Haggerty, Yu. Efremenko, Atsushi Taketani, A. Romana, V. Singh, S. H. Aronson, H. Masui, L. Villatte, W. Holzmann, G. B. Kim, François Fleuret, D. Koehler, S. Esumi, Xingguo Li, W. A. Zajc, V. Baublis, A. Denisov, V. Cianciolo, A. G. Litvinenko, Sergey Fokin, Charles Maguire, S. Leckey, Wei Xie, Norio Saito, A. Hoover, A. Kozlov, A. Deshpande, Hirohiko Sato, R. Seto, S. K. Tuli, P. Chand, S. P. Sorensen, R. du Rietz, V. Babintsev, Josh Moss, Peter M. Nilsson, M. Tamai, E. Kistenev, J. G. Lajoie, T. Hachiya, R. Azmoun, I. J. Choi, V. Ladygin, M. Gonin, H. Kobayashi, Agneta Oskarsson, D. Mukhopadhyay, K. Kurita, Y. Cobigo, Y. Berdnikov, Y. Akiba, M. Sivertz, S. Nagamiya, Kazuhiro Tanaka, Klaus Johannes Reygers, Y. Tanaka, T. K. Shea, H. W. Van Hecke, Alexei Khanzadeev, N. Bruner, E. Stenlund, J. S. Chai, P. L. McGaughey, J. M. Burward-Hoy, E. J. Desmond, M. Hibino, J. Park, R. Amirikas, I. E. Yushmanov, T. C. Awes, Jun Kikuchi, Jason Newby, J. Murata, Minghui Liu, and Kenneth Francis Read
Subjects: Nuclear reaction, Physics, Meson, 010308 nuclear & particles physics, Nuclear Theory, Hadron, General Physics and Astronomy, Electron, 01 natural sciences, 7. Clean energy, Spectral line, Nuclear physics, Momentum, Positron, Deuterium, 0103 physical sciences, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, 010306 general physics
Abstract: Inclusive transverse momentum spectra of eta mesons have been measured within p(T)=2-10 GeV/c at midrapidity by the PHENIX experiment in Au+Au collisions at root s(NN) = 200 GeV. In central Au+Au the eta yields are significantly suppressed compared to peripheral Au+Au, d+Au, and p+p yields scaled by the corresponding number of nucleon-nucleon collisions. The magnitude, centrality, and p(T) dependence of the suppression is common, within errors, for eta and pi(0). The ratio of eta to pi(0) spectra at high p(T) amounts to 0.40 < R-eta/pi(0)< 0.48 for the three systems, in agreement with the world average measured in hadronic and nuclear reactions and, at large scaled momentum, in e(+)e(-) collisions.
Published: 2006

32. Measurement of Identifiedπ0and Inclusive Photon Second-Harmonic Parameterv2and Implications for Direct Photon Production insNN=200 GeVAu+Au

Author: N. N. Ajitanand, Takahiro Nakamura, R. A. Soltz, H. Borel, T. Ichihara, M. E. Sadler, M. Grosse Perdekamp, F. K. Wohn, T. K. Ghosh, Matthew G. Reuter, A. Durum, I. D. Ojha, Alexander Malakhov, D. S. Brown, V.A. Onuchin, L. S. Zolin, X. He, David Olle Rickard Silvermyr, S. Belikov, K. S. Joo, P. D. Barnes, A. Yanovich, V. Peresedov, T. L. Thomas, C. L. Silva, David D'Enterria, V. S. Pantuev, R. P. Pisani, M. Harvey, Ryugo S. Hayano, Masayasu Ishihara, J. Chiba, H. Masui, Nikolay Tyurin, Susumu Sato, Junji Tojo, Y. Riabov, Kenta Shigaki, S. Afanasiev, A. Ster, M. Muniruzzaman, M. Sakai, J. T. Mitchell, N. Kamihara, F. Staley, G. C. Mishra, F. Matathias, J. E. Frantz, K. Okada, H. En'yo, Sean A. Kelly, A. Drees, Y. Tanaka, T. K. Shea, P. Constantin, M. J. Leitch, A. S. Nyanin, Takao Sakaguchi, R. S. Towell, C. Klein-Boesing, Viktor Veszpremi, D. E. Fields, B. V. Jacak, A. K. Purwar, A. D. Frawley, S. Kametani, K. N. Barish, H. Tsuruoka, A. Glenn, F. Messer, K. El Chenawi, M. R. Shaw, M. Ono, Vladislav Manko, S. H. Aronson, Y. Watanabe, J. H. Kang, M. D. Marx, S. N. White, Hiroaki Ohnishi, J. Milan, W. Holzmann, M. Heffner, M. A. Volkov, Y. I. Makdisi, J. S. Haggerty, A. Romana, Senta Greene, M. Nara, Y. J. Kwon, Charles Maguire, S. Leckey, C. A. Ogilvie, N. Hayashi, A. Soldatov, Alexander Milov, T. K. Hemmick, I. Ravinovich, E. O'Brien, M. L. Brooks, G. Gogiberidze, Yasuo Miake, L. Sanfratello, S. Butsyk, M. J. Tannenbaum, S. Sawada, Paul Stankus, C. Y. Chi, R. du Rietz, Josh Moss, T. Chujo, M. Tamai, W. E. Sondheim, J. D. Tepe, A. Franz, V. V. Ikonnikov, K. Tanida, F. Plasil, S. Borenstein, K. Ozawa, I. V. Sourikova, H. Torii, Vladimir Samsonov, I. Otterlund, E. Kistenev, V. I. Kochetkov, L. Kochenda, Minghui Liu, S. Y. Fung, S. S. Kapoor, Shih-Chang Lee, X. Camard, D. Bucher, B. Khachaturov, Y. Kuroki, K. S. Sim, O. Drapier, W. Y. Jang, Martin Purschke, Y. Yang, C. L. Woody, Hideki Hamagaki, G. David, A. Parmar, A. G. Litvinenko, T. Matsumoto, H. Buesching, Kenneth Francis Read, C. P. Singh, A. Isupov, S. S. Ryu, B. M. Johnson, C. H. Kuberg, S. F. Pate, John Hill, K. Oyama, J. Egdemir, S. P. Stoll, Xingguo Li, D. Kotchetkov, S. Bhagavatula, K. Imai, P. Chand, D. P. Morrison, A. G. Hansen, Toru Sugitate, A. Kozlov, G. R. Young, Joakim Nystrand, R. Seto, N. Grau, X. R. Wang, V. Ladygin, M. Gonin, Jan Rak, W. Guryn, Shingo Sakai, Christine Angela Aidala, J. G. Boissevain, François Fleuret, G. Bunce, J. L. Nagle, Z. Fraenkel, R. Granier de Cassagnac, V. E. Semenov, K. Kurita, H. J. Kim, R. K. Choudhury, M. Sivertz, V. Papavassiliou, S. Zhou, Brian Cole, K. Katou, C. Zhang, S. C. Johnson, Y. J. Mao, M. J. Kweon, D. Jouan, T. Kohama, Soren Pontoppidan Sorensen, A. Kiyomichi, T. Peitzmann, Do-Won Kim, P. J. Kroon, L. Villatte, Dong-Hun Kim, Saskia Mioduszewski, C. Pinkenburg, Jen-Chieh Peng, Peter M. Nilsson, M. Stepanov, G. Roche, J. G. Lajoie, T. Hachiya, Yves Roland Schutz, J. Gosset, J. P. Sullivan, V. Bumazhnov, I. J. Choi, Atsushi Taketani, D. Pal, Jun Kikuchi, H. W. Van Hecke, E. M. Takagui, H. Kobayashi, Terry C Awes, S. Yokkaichi, J. M. Heuser, J. S. Chai, Agneta Oskarsson, Y. Berdnikov, Y. Akiba, R. Azmoun, S. Nagamiya, S. Batsouli, Kazuhiro Tanaka, Klaus Johannes Reygers, P. Tarján, P. L. McGaughey, W. C. Chang, Yuri Efremenko, J. M. Burward-Hoy, S. Bathe, Dong Jo Kim, Osamu Jinnouchi, Roy A. Lacey, Kensuke Homma, E. Melnikov, A. P.T. Palounek, S. Chernichenko, H. Lim, B. Bassalleck, F. Mühlbacher, L. Ewell, I. Tserruya, M. Rosati, D. Mukhopadhyay, Y. Cobigo, V. Singh, M. Velkovsky, G. B. Kim, D. Koehler, S. Esumi, Hirohiko Sato, S. K. Tuli, Jason Newby, A. A. Vinogradov, Henrik Tydesjö, W. A. Zajc, Jiangyong Jia, Y. Goto, V. Baublis, A. Denisov, V. Cianciolo, J. Murata, Sergey Fokin, S. S. Adler, G. S. Kyle, James Alexander, Y. Jeong, R. Averbeck, Byung-Sik Hong, A. Bazilevsky, A. Hoover, Alexei Khanzadeev, Philippe Rosnet, N. Bruner, Alexandre Lebedev, E. Stenlund, S. Garpman, D. M. Lee, E. H. Kim, H. A. Gustafsson, O. Dietzsch, R. E. Mischke, Dipanwita Dutta, Julia Velkovska, E. J. Desmond, Viktor Riabov, M. Hibino, J. Park, R. Amirikas, I. E. Yushmanov, Norio Saito, A. Devismes, V. Babintsev, H. Delagrange, M. Kopytine, A. Baldisseri, M. Issah, E. Vznuzdaev, T. E. Miller, R. Santo, A. Enokizono, T. Shiina, M. Chiu, Ajit Kumar Mohanty, T. A. Shibata, K. Kiyoyama, B. K. Nandi, D. Isenhower, German Martinez, Wei Xie, B. D. Fox, A. Deshpande, J. B. Choi, E. P. Hartouni, Yi Liu, and L. Aphecetche
Subjects: Physics, Particle physics, Range (particle radiation), Photon, 010308 nuclear & particles physics, Hadron, General Physics and Astronomy, 01 natural sciences, law.invention, Nuclear physics, Azimuth, Particle decay, law, 0103 physical sciences, High harmonic generation, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Anisotropy, Collider
Abstract: The azimuthal distribution of identified π0 and inclusive photons has been measured in VsNN=200 GeV Au+Au collisions with the PHENIX experiment at the Relativistic Heavy-Ion Collider (RHIC). The second-harmonic parameter (v2) was measured to describe the observed anisotropy of the azimuthal distribution. The measured inclusive photon v2 is consistent with the value expected for the photons from hadron decay and is also consistent with the lack of direct photon signal over the measured pT range 1–6 GeV/c. An attempt is made to extract v2 of direct photons.
Published: 2006

33. Nuclear Modification of Electron Spectra and Implications for Heavy Quark Energy Loss inAu+AuCollisions atsNN=200 GeV

Author: J. G. Boissevain, K. Katou, S. Bathe, S. Y. Fung, A. Kiyomichi, C. Pinkenburg, S. Butsyk, Vladimir Samsonov, B. Khachaturov, V. S. Pantuev, I. Ravinovich, M. Stepanov, G. Roche, Jan Rak, W. Guryn, Kensuke Homma, E. Melnikov, S. Chernichenko, I. Otterlund, K. Oyama, E. H. Kim, T. Matsumoto, I. Tserruya, N. N. Ajitanand, Yu. Efremenko, H. Lim, B. Bassalleck, F. Mühlbacher, L. Ewell, Minghui Liu, M. Harvey, R. Granier de Cassagnac, Y. Watanabe, A. Soldatov, V. Singh, G. B. Kim, D. Koehler, J. Chiba, M. Sakai, Toru Sugitate, Junji Tojo, S. Kametani, Kenneth Francis Read, Joakim Nystrand, Takahiro Nakamura, Martin Purschke, K. Tanida, V. I. Kochetkov, O. Dietzsch, S. Afanasiev, A. Ster, G. C. Mishra, Takao Sakaguchi, M. E. Sadler, J. S. Haggerty, A. Romana, J. L. Nagle, Dipanwita Dutta, S. S. Adler, G. S. Kyle, C. L. Silva, Charles Maguire, S. Leckey, B. D. Fox, François Fleuret, D. Kotchetkov, S. Bhagavatula, Masayasu Ishihara, Susumu Sato, M. Muniruzzaman, A. Durum, F. Staley, T. Kohama, Julia Velkovska, James Alexander, Y. Jeong, R. Averbeck, Byung-Sik Hong, Hirohiko Sato, C. Klein-Boesing, A. D. Frawley, T. Peitzmann, H. W. Van Hecke, Z. Fraenkel, S. K. Tuli, A. Bazilevsky, Saskia Mioduszewski, F. Messer, D. S. Brown, R. du Rietz, Josh Moss, Philippe Rosnet, Alexandre Lebedev, S. H. Aronson, Hyun-Chul Kim, M. Rosati, D. M. Lee, M. Heffner, M. Velkovsky, M. Tamai, K. Okada, Alexander Milov, S. Esumi, W. Holzmann, J. T. Mitchell, E. Kistenev, T. C. Awes, R. K. Choudhury, V.A. Onuchin, S. Belikov, K. S. Joo, Vladislav Manko, O. Drapier, G. Gogiberidze, Shih-Chang Lee, Y. I. Makdisi, S. P. Sorensen, M. D. Marx, A. A. Vinogradov, Henrik Tydesjö, Jun Kikuchi, D. E. Fields, B. V. Jacak, Youngil Kwon, D. P. Morrison, H. En'yo, P. Constantin, V. Bumazhnov, Norio Saito, W. A. Zajc, K. S. Sim, T. Chujo, X. Camard, Yves Roland Schutz, Peter M. Nilsson, Y. Goto, V. E. Semenov, M. J. Leitch, C. L. Woody, J. Gosset, A. Parmar, S. F. Pate, J. S. Chai, J. P. Sullivan, P. L. McGaughey, H. Tsuruoka, Christine Angela Aidala, V. Babintsev, M. J. Tannenbaum, Sean A. Kelly, A. K. Purwar, P. Chand, J. G. Lajoie, T. Hachiya, A. Devismes, Hideki Hamagaki, Y. Tanaka, G. David, Jen-Chieh Peng, J. C. Hill, V. V. Ikonnikov, J. M. Burward-Hoy, V. Baublis, A. Denisov, T. K. Shea, D. Pal, J. Jia, Wei Xie, W. E. Sondheim, I. J. Choi, C. H. Kuberg, P. Tarján, D. Bucher, V. Cianciolo, K. El Chenawi, M. R. Shaw, Viktor Veszpremi, E. M. Takagui, Hiroaki Ohnishi, J. Milan, David D'Enterria, X. R. Wang, Jason Newby, W. C. Chang, A. Deshpande, Y. Yang, J. Murata, S. C. Johnson, T. Ichihara, Y. J. Mao, L. Sanfratello, S. Yokkaichi, Dong Jo Kim, J. M. Heuser, Roy A. Lacey, Sergey Fokin, Osamu Jinnouchi, C. P. Singh, B. M. Johnson, M. J. Kweon, R. P. Pisani, F. K. Wohn, T. K. Ghosh, Matthew G. Reuter, S. Borenstein, J. B. Choi, K. Ozawa, Nikolay Tyurin, I. D. Ojha, Alexander Malakhov, A. Hoover, H. Delagrange, Yi Liu, H. Buesching, S. Garpman, Do-Won Kim, P. J. Kroon, L. Aphecetche, E. J. Desmond, L. S. Zolin, Xingguo Li, E. P. Hartouni, Brian Cole, Atsushi Taketani, V. Papavassiliou, K. Imai, V. Ladygin, M. Gonin, Dong-Hun Kim, L. Villatte, H. Kobayashi, R. S. Towell, H. A. Gustafsson, P. D. Barnes, A. Yanovich, M. Kopytine, Agneta Oskarsson, M. Hibino, J. Park, K. Kurita, S. Zhou, R. E. Mischke, M. Sivertz, C. Zhang, N. Grau, N. Hayashi, M. Issah, C. Y. Chi, Y. Berdnikov, Y. Akiba, P. W. Stankus, E. Vznuzdaev, A. Baldisseri, Viktor Riabov, T. Shiina, Senta Greene, S. Sawada, M. Nara, J. D. Tepe, A. Franz, R. Amirikas, S. S. Kapoor, S. Nagamiya, I. E. Yushmanov, Kazuhiro Tanaka, S. Batsouli, A. P.T. Palounek, Alexei Khanzadeev, N. Bruner, E. Stenlund, Klaus Johannes Reygers, E. O'Brien, R. A. Soltz, H. Borel, M. Chiu, Ajit Kumar Mohanty, T. A. Shibata, M. Grosse Perdekamp, David Olle Rickard Silvermyr, K. Kiyoyama, B. K. Nandi, G. R. Young, D. Isenhower, German Martinez, T. E. Miller, R. Santo, A. Enokizono, N. Kamihara, F. Matathias, A. Drees, J. Egdemir, S. P. Stoll, G. Bunce, D. Jouan, M. A. Volkov, C. A. Ogilvie, J. Kang, A. G. Hansen, T. K. Hemmick, Yasuo Miake, Shingo Sakai, L. Kochenda, Y. Kuroki, W. Y. Jang, I. V. Sourikova, H. Torii, T. L. Thomas, Ryugo S. Hayano, Y. Riabov, Kenta Shigaki, A. S. Nyanin, K. N. Barish, M. Ono, M. L. Brooks, A. G. Litvinenko, A. Kozlov, R. Seto, S. N. White, X. He, V. Peresedov, F. Plasil, A. Isupov, S. S. Ryu, H. Masui, J. E. Frantz, A. Glenn, R. Azmoun, D. Mukhopadhyay, and Y. Cobigo
Subjects: Physics, Quark, Semileptonic decay, Particle physics, Photon, Meson, 010308 nuclear & particles physics, Electron spectra, Nuclear Theory, High Energy Physics::Phenomenology, Hadron, General Physics and Astronomy, Electron, 01 natural sciences, 7. Clean energy, Spectral line, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics
Abstract: The PHENIX experiment has measured midrapidity ([FORMULA: SEE TEXT]) transverse momentum spectra ([FORMULA: SEE TEXT]) of electrons as a function of centrality in Au+Au collisions at [FORMULA: SEE TEXT]. Contributions from photon conversions and from light hadron decays, mainly Dalitz decays of pi0 and eta mesons, were removed. The resulting nonphotonic electron spectra are primarily due to the semileptonic decays of hadrons carrying heavy quarks. Nuclear modification factors were determined by comparison to nonphotonic electrons in p+p collisions. A significant suppression of electrons at high pT is observed in central Au+Au collisions, indicating substantial energy loss of heavy quarks.
Published: 2006

34. Common suppression pattern of eta and pi0 mesons at high transverse momentum in Au + Au collisions at square root S(NN) = 200 GeV

Author: S S, Adler, S, Afanasiev, C, Aidala, N N, Ajitanand, Y, Akiba, J, Alexander, R, Amirikas, L, Aphecetche, S H, Aronson, R, Averbeck, T C, Awes, R, Azmoun, V, Babintsev, A, Baldisseri, K N, Barish, P D, Barnes, B, Bassalleck, S, Bathe, S, Batsouli, V, Baublis, A, Bazilevsky, S, Belikov, Y, Berdnikov, S, Bhagavatula, J G, Boissevain, H, Borel, S, Borenstein, M L, Brooks, D S, Brown, N, Bruner, D, Bucher, H, Buesching, V, Bumazhnov, G, Bunce, J M, Burward-Hoy, S, Butsyk, X, Camard, J-S, Chai, P, Chand, W C, Chang, S, Chernichenko, C Y, Chi, J, Chiba, M, Chiu, I J, Choi, J, Choi, R K, Choudhury, T, Chujo, V, Cianciolo, Y, Cobigo, B A, Cole, P, Constantin, D, d'Enterria, G, David, H, Delagrange, A, Denisov, A, Deshpande, E J, Desmond, A, Devismes, O, Dietzsch, O, Drapier, A, Drees, R, du Rietz, A, Durum, D, Dutta, Y V, Efremenko, K El, Chenawi, A, Enokizono, H, En'yo, S, Esumi, L, Ewell, D E, Fields, F, Fleuret, S L, Fokin, B D, Fox, Z, Fraenkel, J E, Frantz, A, Franz, A D, Frawley, S-Y, Fung, S, Garpman, T K, Ghosh, A, Glenn, G, Gogiberidze, M, Gonin, J, Gosset, Y, Goto, R Granier, de Cassagnac, N, Grau, S V, Greene, M Grosse, Perdekamp, W, Guryn, H-A, Gustafsson, T, Hachiya, J S, Haggerty, H, Hamagaki, A G, Hansen, E P, Hartouni, M, Harvey, R, Hayano, N, Hayashi, X, He, M, Heffner, T K, Hemmick, J M, Heuser, M, Hibino, H, Hiejima, J C, Hill, W, Holzmann, K, Homma, B, Hong, A, Hoover, T, Ichihara, V V, Ikonnikov, K, Imai, D, Isenhower, M, Ishihara, M, Issah, A, Isupov, B V, Jacak, W Y, Jang, Y, Jeong, J, Jia, O, Jinnouchi, B M, Johnson, S C, Johnson, K S, Joo, D, Jouan, S, Kametani, N, Kamihara, J H, Kang, S S, Kapoor, K, Katou, S, Kelly, B, Khachaturov, A, Khanzadeev, J, Kikuchi, D H, Kim, D J, Kim, D W, Kim, E, Kim, G-B, Kim, H J, Kim, E, Kistenev, A, Kiyomichi, K, Kiyoyama, C, Klein-Boesing, H, Kobayashi, L, Kochenda, V, Kochetkov, D, Koehler, T, Kohama, M, Kopytine, D, Kotchetkov, A, Kozlov, P J, Kroon, C H, Kuberg, K, Kurita, Y, Kuroki, M J, Kweon, Y, Kwon, G S, Kyle, R, Lacey, V, Ladygin, J G, Lajoie, A, Lebedev, S, Leckey, D M, Lee, S, Lee, M J, Leitch, X H, Li, H, Lim, A, Litvinenko, M X, Liu, Y, Liu, C F, Maguire, Y I, Makdisi, A, Malakhov, V I, Manko, Y, Mao, G, Martinez, M D, Marx, H, Masui, F, Matathias, T, Matsumoto, P L, McGaughey, E, Melnikov, F, Messer, Y, Miake, J, Milan, T E, Miller, A, Milov, S, Mioduszewski, R E, Mischke, G C, Mishra, J T, Mitchell, A K, Mohanty, D P, Morrison, J M, Moss, F, Mühlbacher, D, Mukhopadhyay, M, Muniruzzaman, J, Murata, S, Nagamiya, J L, Nagle, T, Nakamura, B K, Nandi, M, Nara, J, Newby, P, Nilsson, A S, Nyanin, J, Nystrand, E, O'Brien, C A, Ogilvie, H, Ohnishi, I D, Ojha, K, Okada, M, Ono, V, Onuchin, A, Oskarsson, I, Otterlund, K, Oyama, K, Ozawa, D, Pal, A P T, Palounek, V, Pantuev, V, Papavassiliou, J, Park, A, Parmar, S F, Pate, T, Peitzmann, J-C, Peng, V, Peresedov, C, Pinkenburg, R P, Pisani, F, Plasil, M L, Purschke, A K, Purwar, J, Rak, I, Ravinovich, K F, Read, M, Reuter, K, Reygers, V, Riabov, Y, Riabov, G, Roche, A, Romana, M, Rosati, P, Rosnet, S S, Ryu, M E, Sadler, B, Sahlmueller, N, Saito, T, Sakaguchi, M, Sakai, S, Sakai, V, Samsonov, L, Sanfratello, R, Santo, H D, Sato, S, Sato, S, Sawada, Y, Schutz, V, Semenov, R, Seto, M R, Shaw, T K, Shea, T-A, Shibata, K, Shigaki, T, Shiina, C L, Silva, D, Silvermyr, K S, Sim, C P, Singh, V, Singh, M, Sivertz, A, Soldatov, R A, Soltz, W E, Sondheim, S P, Sorensen, I V, Sourikova, F, Staley, P W, Stankus, E, Stenlund, M, Stepanov, A, Ster, S P, Stoll, T, Sugitate, J P, Sullivan, E M, Takagui, A, Taketani, M, Tamai, K H, Tanaka, Y, Tanaka, K, Tanida, M J, Tannenbaum, P, Tarján, J D, Tepe, T L, Thomas, J, Tojo, H, Torii, R S, Towell, I, Tserruya, H, Tsuruoka, S K, Tuli, H, Tydesjö, N, Tyurin, H W, van Hecke, J, Velkovska, M, Velkovsky, V, Veszprémi, L, Villatte, A A, Vinogradov, M A, Volkov, E, Vznuzdaev, X R, Wang, Y, Watanabe, S N, White, F K, Wohn, C L, Woody, W, Xie, Y, Yang, A, Yanovich, S, Yokkaichi, G R, Young, I E, Yushmanov, W A, Zajc, C, Zhang, S, Zhou, S J, Zhou, and L, Zolin
Abstract: Inclusive transverse momentum spectra of eta mesons have been measured within p(T) = 2-10 GeV/c at midrapidity by the PHENIX experiment in Au + Au collisions at square root S(NN) = 200 GeV. In central Au+Au the eta yields are significantly suppressed compared to peripheral Au + Au, d + Au, and p + p yields scaled by the corresponding number of nucleon-nucleon collisions. The magnitude, centrality, and p(T) dependence of the suppression is common, within errors, for eta and pi0. The ratio of eta to pi0 spectra at high p(T) amounts to 0.40R(eta/pi)00.48 for the three systems, in agreement with the world average measured in hadronic and nuclear reactions and, at large scaled momentum, in e+e- collisions.
Published: 2006

35. Single Electrons from Heavy-Flavor Decays inp+pCollisions ats=200 GeV

Author: N. N. Ajitanand, J. G. Boissevain, M. Issah, S. Batsouli, E. Vznuzdaev, Sean A. Kelly, K. Katou, T. Shiina, Viktor Veszpremi, A. Kiyomichi, C. Pinkenburg, Yi Liu, M. A. Volkov, M. Stepanov, G. Roche, S. Garpman, H. A. Gustafsson, L. Aphecetche, V. Ladygin, M. Gonin, R. E. Mischke, C. Zhang, Viktor Riabov, V. S. Pantuev, Takahiro Nakamura, S. Afanasiev, Senta Greene, M. Nara, M. Harvey, A. Ster, Junji Tojo, A. P.T. Palounek, C. A. Ogilvie, J. Chiba, J. Kang, T. K. Hemmick, M. Chiu, Ajit Kumar Mohanty, T. A. Shibata, K. Kiyoyama, M. Sakai, J. Gosset, T. L. Thomas, E. O'Brien, R. A. Soltz, S. Butsyk, Vladimir Samsonov, J. P. Sullivan, M. E. Sadler, B. D. Fox, F. Messer, S. Esumi, W. A. Zajc, V. Baublis, A. Denisov, Yasuo Miake, V. Cianciolo, Sergey Fokin, B. K. Nandi, K. Kurita, M. Sivertz, A. Hoover, M. Grosse Perdekamp, G. R. Young, I. Otterlund, X. He, S. Sawada, J. D. Tepe, A. Franz, G. C. Mishra, K. Okada, M. Heffner, H. W. Van Hecke, Ryugo S. Hayano, Norio Saito, L. Kochenda, H. En'yo, D. Isenhower, S. S. Kapoor, P. Constantin, M. J. Leitch, Takao Sakaguchi, Hiroaki Ohnishi, J. Milan, Y. Kuroki, W. Y. Jang, A. Durum, H. Tsuruoka, German Martinez, Y. Riabov, T. C. Awes, Wei Xie, Jun Kikuchi, Shih-Chang Lee, K. S. Sim, David Olle Rickard Silvermyr, Youngil Kwon, S. Yokkaichi, J. M. Heuser, G. Gogiberidze, Kenta Shigaki, A. Deshpande, V. Peresedov, C. Klein-Boesing, O. Dietzsch, S. Kametani, J. S. Chai, A. D. Frawley, H. J. Kim, J. L. Nagle, N. Kamihara, A. Devismes, C. L. Woody, F. Matathias, J. S. Haggerty, P. L. McGaughey, Dipanwita Dutta, David D'Enterria, T. Kohama, S. H. Aronson, B. Khachaturov, H. Buesching, A. Romana, A. Drees, J. M. Burward-Hoy, L. Sanfratello, H. Delagrange, A. S. Nyanin, K. Imai, T. Matsumoto, R. P. Pisani, S. Borenstein, Julia Velkovska, M. Rosati, Xingguo Li, V. Babintsev, P. Chand, W. Holzmann, D. S. Brown, H. Masui, S. S. Adler, G. S. Kyle, Jan Rak, W. Guryn, V. Bumazhnov, K. Ozawa, J. B. Choi, M. Velkovsky, Hideki Hamagaki, Y. I. Makdisi, M. Kopytine, S. Zhou, R. Granier de Cassagnac, L. Villatte, James Alexander, Joakim Nystrand, G. David, A. A. Vinogradov, Minghui Liu, Y. Jeong, R. Averbeck, Byung-Sik Hong, Nikolay Tyurin, S. P. Sorensen, C. H. Kuberg, Henrik Tydesjö, S. F. Pate, S. P. Stoll, Peter M. Nilsson, Kenneth Francis Read, Jiangyong Jia, Y. Goto, Charles Maguire, A. Bazilevsky, A. G. Litvinenko, E. P. Hartouni, Gerry Bunce, H. Kobayashi, Philippe Rosnet, P. Tarján, Agneta Oskarsson, S. Leckey, W. C. Chang, X. R. Wang, T. E. Miller, Y. Berdnikov, M. J. Tannenbaum, Alexandre Lebedev, D. M. Lee, Y. Akiba, R. Santo, A. Enokizono, S. Nagamiya, Kazuhiro Tanaka, A. Kozlov, Roy A. Lacey, R. du Rietz, Josh Moss, Klaus Johannes Reygers, R. Seto, V. V. Ikonnikov, S. N. White, V. Papavassiliou, J. G. Lajoie, T. Hachiya, D. Jouan, M. Tamai, D. Bucher, D. E. Fields, B. V. Jacak, E. Kistenev, K. N. Barish, I. J. Choi, M. Ono, A. K. Purwar, M. L. Brooks, Do-Won Kim, P. J. Kroon, S. Bathe, Dong-Hun Kim, Kensuke Homma, E. Melnikov, I. V. Sourikova, H. Torii, S. Chernichenko, H. Lim, B. Bassalleck, F. Mühlbacher, L. Ewell, A. G. Hansen, Shingo Sakai, J. T. Mitchell, Vladislav Manko, M. D. Marx, Y. Tanaka, N. Grau, T. Chujo, X. Camard, T. K. Shea, A. Parmar, Christine Angela Aidala, P. W. Stankus, W. E. Sondheim, S. Y. Fung, John Hill, K. Oyama, Toru Sugitate, François Fleuret, T. Ichihara, F. K. Wohn, T. K. Ghosh, Matthew G. Reuter, I. D. Ojha, Alexander Malakhov, L. S. Zolin, P. D. Barnes, A. Yanovich, Y. Watanabe, A. Soldatov, C. L. Silva, Masayasu Ishihara, Susumu Sato, M. Muniruzzaman, F. Staley, K. Tanida, V. I. Kochetkov, Alberto Baldisseri, Y. Yang, C. P. Singh, B. M. Johnson, Brian Cole, J. E. Frantz, S. C. Johnson, Y. J. Mao, T. Peitzmann, Herve Borel, Saskia Mioduszewski, M. J. Kweon, A. Glenn, Yves Roland Schutz, D. Pal, E. M. Takagui, R. S. Towell, N. Hayashi, R. Azmoun, C. Y. Chi, D. Mukhopadhyay, Y. Cobigo, I. Ravinovich, F. Plasil, A. Isupov, S. S. Ryu, Atsushi Taketani, V.A. Onuchin, S. Belikov, K. S. Joo, K. El Chenawi, M. R. Shaw, Martin Purschke, I. Tserruya, Yu. Efremenko, V. Singh, D. Kotchetkov, G. B. Kim, S. Bhagavatula, D. Koehler, Z. Fraenkel, R. K. Choudhury, Hirohiko Sato, S. K. Tuli, Alexander Milov, O. Drapier, Jason Newby, D. P. Morrison, J. Murata, V. E. Semenov, Jen-Chieh Peng, E. J. Desmond, Dong Jo Kim, Osamu Jinnouchi, M. Hibino, J. Park, R. Amirikas, I. E. Yushmanov, Alexei Khanzadeev, N. Bruner, E. Stenlund, and E. H. Kim
Subjects: Quark, Physics, Quantum chromodynamics, Particle physics, Meson, 010308 nuclear & particles physics, High Energy Physics::Lattice, High Energy Physics::Phenomenology, General Physics and Astronomy, Perturbative QCD, 01 natural sciences, Charm quark, Pair production, 0103 physical sciences, High Energy Physics::Experiment, Charm (quantum number), Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract: The invariant differential cross section for inclusive electron production in p+p collisions at [FORMULA: SEE TEXT] has been measured by the PHENIX experiment at the BNL Relativistic Heavy Ion Collider over the transverse momentum range 0.4
Published: 2006

36. Measurement of Transverse Single-Spin Asymmetries for Midrapidity Production of Neutral Pions and Charged Hadrons in Polarizedp+pCollisions ats=200 GeV

Author: S. S. Adler, S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, J. Alexander, R. Amirikas, L. Aphecetche, S. H. Aronson, R. Averbeck, T. C. Awes, R. Azmoun, V. Babintsev, A. Baldisseri, K. N. Barish, P. D. Barnes, B. Bassalleck, S. Bathe, S. Batsouli, V. Baublis, F. Bauer, A. Bazilevsky, S. Belikov, Y. Berdnikov, S. Bhagavatula, J. G. Boissevain, H. Borel, S. Borenstein, M. L. Brooks, D. S. Brown, N. Bruner, D. Bucher, H. Buesching, V. Bumazhnov, G. Bunce, J. M. Burward-Hoy, S. Butsyk, X. Camard, J.-S. Chai, P. Chand, W. C. Chang, S. Chernichenko, C. Y. Chi, J. Chiba, M. Chiu, I. J. Choi, J. Choi, R. K. Choudhury, T. Chujo, V. Cianciolo, Y. Cobigo, B. A. Cole, P. Constantin, D. d’Enterria, G. David, H. Delagrange, A. Denisov, A. Deshpande, E. J. Desmond, A. Devismes, O. Dietzsch, O. Drapier, A. Drees, K. A. Drees, R. du Rietz, A. Durum, D. Dutta, Y. V. Efremenko, K. El Chenawi, A. Enokizono, H. En’yo, S. Esumi, L. Ewell, D. E. Fields, F. Fleuret, S. L. Fokin, B. D. Fox, Z. Fraenkel, J. E. Frantz, A. Franz, A. D. Frawley, S.-Y. Fung, S. Garpman, T. K. Ghosh, A. Glenn, G. Gogiberidze, M. Gonin, J. Gosset, Y. Goto, R. Granier de Cassagnac, N. Grau, S. V. Greene, M. Grosse Perdekamp, W. Guryn, H.-Å. Gustafsson, T. Hachiya, J. S. Haggerty, H. Hamagaki, A. G. Hansen, E. P. Hartouni, M. Harvey, R. Hayano, N. Hayashi, X. He, M. Heffner, T. K. Hemmick, J. M. Heuser, M. Hibino, J. C. Hill, W. Holzmann, K. Homma, B. Hong, A. Hoover, T. Ichihara, V. V. Ikonnikov, K. Imai, D. Isenhower, M. Ishihara, M. Issah, A. Isupov, B. V. Jacak, W. Y. Jang, Y. Jeong, J. Jia, O. Jinnouchi, B. M. Johnson, S. C. Johnson, K. S. Joo, D. Jouan, S. Kametani, N. Kamihara, J. H. Kang, S. S. Kapoor, K. Katou, S. Kelly, B. Khachaturov, A. Khanzadeev, J. Kikuchi, D. H. Kim, D. J. Kim, D. W. Kim, E. Kim, G.-B. Kim, H. J. Kim, E. Kistenev, A. Kiyomichi, K. Kiyoyama, C. Klein-Boesing, H. Kobayashi, L. Kochenda, V. Kochetkov, D. Koehler, T. Kohama, M. Kopytine, D. Kotchetkov, A. Kozlov, P. J. Kroon, C. H. Kuberg, K. Kurita, Y. Kuroki, M. J. Kweon, Y. Kwon, G. S. Kyle, R. Lacey, V. Ladygin, J. G. Lajoie, A. Lebedev, S. Leckey, D. M. Lee, S. Lee, M. J. Leitch, X. H. Li, H. Lim, A. Litvinenko, M. X. Liu, Y. Liu, C. F. Maguire, Y. I. Makdisi, A. Malakhov, V. I. Manko, Y. Mao, G. Martinez, M. D. Marx, H. Masui, F. Matathias, T. Matsumoto, P. L. McGaughey, E. Melnikov, F. Messer, Y. Miake, J. Milan, T. E. Miller, A. Milov, S. Mioduszewski, R. E. Mischke, G. C. Mishra, J. T. Mitchell, A. K. Mohanty, D. P. Morrison, J. M. Moss, F. Mühlbacher, D. Mukhopadhyay, M. Muniruzzaman, J. Murata, S. Nagamiya, J. L. Nagle, T. Nakamura, B. K. Nandi, M. Nara, J. Newby, P. Nilsson, A. S. Nyanin, J. Nystrand, E. O’Brien, C. A. Ogilvie, H. Ohnishi, I. D. Ojha, K. Okada, M. Ono, V. Onuchin, A. Oskarsson, I. Otterlund, K. Oyama, K. Ozawa, D. Pal, A. P. T. Palounek, V. Pantuev, V. Papavassiliou, J. Park, A. Parmar, S. F. Pate, T. Peitzmann, J.-C. Peng, V. Peresedov, C. Pinkenburg, R. P. Pisani, F. Plasil, M. L. Purschke, A. K. Purwar, J. Rak, I. Ravinovich, K. F. Read, M. Reuter, K. Reygers, V. Riabov, Y. Riabov, G. Roche, A. Romana, M. Rosati, P. Rosnet, S. S. Ryu, M. E. Sadler, N. Saito, T. Sakaguchi, M. Sakai, S. Sakai, V. Samsonov, L. Sanfratello, R. Santo, H. D. Sato, S. Sato, S. Sawada, Y. Schutz, V. Semenov, R. Seto, M. R. Shaw, T. K. Shea, T.-A. Shibata, K. Shigaki, T. Shiina, C. L. Silva, D. Silvermyr, K. S. Sim, C. P. Singh, V. Singh, M. Sivertz, A. Soldatov, R. A. Soltz, W. E. Sondheim, S. P. Sorensen, I. V. Sourikova, F. Staley, P. W. Stankus, E. Stenlund, M. Stepanov, A. Ster, S. P. Stoll, T. Sugitate, J. P. Sullivan, E. M. Takagui, A. Taketani, M. Tamai, K. H. Tanaka, Y. Tanaka, K. Tanida, M. J. Tannenbaum, P. Tarján, J. D. Tepe, T. L. Thomas, J. Tojo, H. Torii, R. S. Towell, I. Tserruya, H. Tsuruoka, S. K. Tuli, H. Tydesjö, N. Tyurin, H. W. van Hecke, J. Velkovska, M. Velkovsky, V. Veszprémi, L. Villatte, A. A. Vinogradov, M. A. Volkov, E. Vznuzdaev, X. R. Wang, Y. Watanabe, S. N. White, F. K. Wohn, C. L. Woody, W. Xie, Y. Yang, A. Yanovich, S. Yokkaichi, G. R. Young, I. E. Yushmanov, W. A. Zajc, C. Zhang, S. Zhou, S. J. Zhou, and L. Zolin
Subjects: Quantum chromodynamics, Physics, Range (particle radiation), Particle physics, Proton, 010308 nuclear & particles physics, media_common.quotation_subject, Nuclear Theory, Hadron, General Physics and Astronomy, Perturbative QCD, 01 natural sciences, Asymmetry, Nuclear physics, Pion, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Spin-½, media_common
Abstract: Transverse single-spin asymmetries to probe the transverse-spin structure of the proton have been measured for neutral pions and nonidentified charged hadrons from polarized proton-proton collisions at midrapidity and root s = 200 GeV. The data cover a transverse momentum (pT) range 1.0-5.0 GeV/c for neutral pions and 0.5-5.0 GeV/c for charged hadrons, at a Feynman-x value of approximately zero. The asymmetries seen in this previously unexplored kinematic region are consistent with zero within errors of a few percent. In addition, the inclusive charged hadron cross section at midrapidity from 0.5 < P-T < 7.0 GeV/c is presented and compared to next-to-leading order perturbative QCD ( pQCD) calculations. Successful description of the unpolarized cross section above similar to 2 GeV/c suggests that pQCD is applicable in the interpretation of the asymmetry results in the relevant kinematic range.
Published: 2005

37. Nuclear modification of electron spectra and implications for heavy quark energy loss in Au+Au collisions at [FORMULA: SEE TEXT]

Author: S S, Adler, S, Afanasiev, C, Aidala, N N, Ajitanand, Y, Akiba, J, Alexander, R, Amirikas, L, Aphecetche, S H, Aronson, R, Averbeck, T C, Awes, R, Azmoun, V, Babintsev, A, Baldisseri, K N, Barish, P D, Barnes, B, Bassalleck, S, Bathe, S, Batsouli, V, Baublis, A, Bazilevsky, S, Belikov, Y, Berdnikov, S, Bhagavatula, J G, Boissevain, H, Borel, S, Borenstein, M L, Brooks, D S, Brown, N, Bruner, D, Bucher, H, Buesching, V, Bumazhnov, G, Bunce, J M, Burward-Hoy, S, Butsyk, X, Camard, J-S, Chai, P, Chand, W C, Chang, S, Chernichenko, C Y, Chi, J, Chiba, M, Chiu, I J, Choi, J, Choi, R K, Choudhury, T, Chujo, V, Cianciolo, Y, Cobigo, B A, Cole, P, Constantin, D, d'Enterria, G, David, H, Delagrange, A, Denisov, A, Deshpande, E J, Desmond, A, Devismes, O, Dietzsch, O, Drapier, A, Drees, R, du Rietz, A, Durum, D, Dutta, Y V, Efremenko, J, Egdemir, K, El Chenawi, A, Enokizono, H, En'yo, S, Esumi, L, Ewell, D E, Fields, F, Fleuret, S L, Fokin, B D, Fox, Z, Fraenkel, J E, Frantz, A, Franz, A D, Frawley, S-Y, Fung, S, Garpman, T K, Ghosh, A, Glenn, G, Gogiberidze, M, Gonin, J, Gosset, Y, Goto, R, Granier de Cassagnac, N, Grau, S V, Greene, M, Grosse Perdekamp, W, Guryn, H-A, Gustafsson, T, Hachiya, J S, Haggerty, H, Hamagaki, A G, Hansen, E P, Hartouni, M, Harvey, R, Hayano, N, Hayashi, X, He, M, Heffner, T K, Hemmick, J M, Heuser, M, Hibino, J C, Hill, W, Holzmann, K, Homma, B, Hong, A, Hoover, T, Ichihara, V V, Ikonnikov, K, Imai, D, Isenhower, M, Ishihara, M, Issah, A, Isupov, B V, Jacak, W Y, Jang, Y, Jeong, J, Jia, O, Jinnouchi, B M, Johnson, S C, Johnson, K S, Joo, D, Jouan, S, Kametani, N, Kamihara, J H, Kang, S S, Kapoor, K, Katou, S, Kelly, B, Khachaturov, A, Khanzadeev, J, Kikuchi, D H, Kim, D J, Kim, D W, Kim, E, Kim, G-B, Kim, H J, Kim, E, Kistenev, A, Kiyomichi, K, Kiyoyama, C, Klein-Boesing, H, Kobayashi, L, Kochenda, V, Kochetkov, D, Koehler, T, Kohama, M, Kopytine, D, Kotchetkov, A, Kozlov, P J, Kroon, C H, Kuberg, K, Kurita, Y, Kuroki, M J, Kweon, Y, Kwon, G S, Kyle, R, Lacey, V, Ladygin, J G, Lajoie, A, Lebedev, S, Leckey, D M, Lee, S, Lee, M J, Leitch, X H, Li, H, Lim, A, Litvinenko, M X, Liu, Y, Liu, C F, Maguire, Y I, Makdisi, A, Malakhov, V I, Manko, Y, Mao, G, Martinez, M D, Marx, H, Masui, F, Matathias, T, Matsumoto, P L, McGaughey, E, Melnikov, F, Messer, Y, Miake, J, Milan, T E, Miller, A, Milov, S, Mioduszewski, R E, Mischke, G C, Mishra, J T, Mitchell, A K, Mohanty, D P, Morrison, J M, Moss, F, Mühlbacher, D, Mukhopadhyay, M, Muniruzzaman, J, Murata, S, Nagamiya, J L, Nagle, T, Nakamura, B K, Nandi, M, Nara, J, Newby, P, Nilsson, A S, Nyanin, J, Nystrand, E, O'Brien, C A, Ogilvie, H, Ohnishi, I D, Ojha, K, Okada, M, Ono, V, Onuchin, A, Oskarsson, I, Otterlund, K, Oyama, K, Ozawa, D, Pal, A P T, Palounek, V, Pantuev, V, Papavassiliou, J, Park, A, Parmar, S F, Pate, T, Peitzmann, J-C, Peng, V, Peresedov, C, Pinkenburg, R P, Pisani, F, Plasil, M L, Purschke, A K, Purwar, J, Rak, I, Ravinovich, K F, Read, M, Reuter, K, Reygers, V, Riabov, Y, Riabov, G, Roche, A, Romana, M, Rosati, P, Rosnet, S S, Ryu, M E, Sadler, N, Saito, T, Sakaguchi, M, Sakai, S, Sakai, V, Samsonov, L, Sanfratello, R, Santo, H D, Sato, S, Sato, S, Sawada, Y, Schutz, V, Semenov, R, Seto, M R, Shaw, T K, Shea, T-A, Shibata, K, Shigaki, T, Shiina, C L, Silva, D, Silvermyr, K S, Sim, C P, Singh, V, Singh, M, Sivertz, A, Soldatov, R A, Soltz, W E, Sondheim, S P, Sorensen, I V, Sourikova, F, Staley, P W, Stankus, E, Stenlund, M, Stepanov, A, Ster, S P, Stoll, T, Sugitate, J P, Sullivan, E M, Takagui, A, Taketani, M, Tamai, K H, Tanaka, Y, Tanaka, K, Tanida, M J, Tannenbaum, P, Tarján, J D, Tepe, T L, Thomas, J, Tojo, H, Torii, R S, Towell, I, Tserruya, H, Tsuruoka, S K, Tuli, H, Tydesjö, N, Tyurin, H W, van Hecke, J, Velkovska, M, Velkovsky, V, Veszprémi, L, Villatte, A A, Vinogradov, M A, Volkov, E, Vznuzdaev, X R, Wang, Y, Watanabe, S N, White, F K, Wohn, C L, Woody, W, Xie, Y, Yang, A, Yanovich, S, Yokkaichi, G R, Young, I E, Yushmanov, W A, Zajc, C, Zhang, S, Zhou, S J, Zhou, and L, Zolin
Abstract: The PHENIX experiment has measured midrapidity ([FORMULA: SEE TEXT]) transverse momentum spectra ([FORMULA: SEE TEXT]) of electrons as a function of centrality in Au+Au collisions at [FORMULA: SEE TEXT]. Contributions from photon conversions and from light hadron decays, mainly Dalitz decays of pi0 and eta mesons, were removed. The resulting nonphotonic electron spectra are primarily due to the semileptonic decays of hadrons carrying heavy quarks. Nuclear modification factors were determined by comparison to nonphotonic electrons in p+p collisions. A significant suppression of electrons at high pT is observed in central Au+Au collisions, indicating substantial energy loss of heavy quarks.
Published: 2005

38. Measurement of identified and inclusive photon second-harmonic parameter and implications for direct photon production in [FORMULA: SEE TEXT] Au+Au

Author: S S, Adler, S, Afanasiev, C, Aidala, N N, Ajitanand, Y, Akiba, J, Alexander, R, Amirikas, L, Aphecetche, S H, Aronson, R, Averbeck, T C, Awes, R, Azmoun, V, Babintsev, A, Baldisseri, K N, Barish, P D, Barnes, B, Bassalleck, S, Bathe, S, Batsouli, V, Baublis, A, Bazilevsky, S, Belikov, Y, Berdnikov, S, Bhagavatula, J G, Boissevain, H, Borel, S, Borenstein, M L, Brooks, D S, Brown, N, Bruner, D, Bucher, H, Buesching, V, Bumazhnov, G, Bunce, J M, Burward-Hoy, S, Butsyk, X, Camard, J-S, Chai, P, Chand, W C, Chang, S, Chernichenko, C Y, Chi, J, Chiba, M, Chiu, I J, Choi, J, Choi, R K, Choudhury, T, Chujo, V, Cianciolo, Y, Cobigo, B A, Cole, P, Constantin, D, d'Enterria, G, David, H, Delagrange, A, Denisov, A, Deshpande, E J, Desmond, A, Devismes, O, Dietzsch, O, Drapier, A, Drees, R, du Rietz, A, Durum, D, Dutta, Y V, Efremenko, K, El Chenawi, A, Enokizono, H, En'yo, S, Esumi, L, Ewell, D E, Fields, F, Fleuret, S L, Fokin, B D, Fox, Z, Fraenkel, J E, Frantz, A, Franz, A D, Frawley, S-Y, Fung, S, Garpman, T K, Ghosh, A, Glenn, G, Gogiberidze, M, Gonin, J, Gosset, Y, Goto, R Granier, de Cassagnac, N, Grau, S V, Greene, M Grosse, Perdekamp, W, Guryn, H-A, Gustafsson, T, Hachiya, J S, Haggerty, H, Hamagaki, A G, Hansen, E P, Hartouni, M, Harvey, R, Hayano, N, Hayashi, X, He, M, Heffner, T K, Hemmick, J M, Heuser, M, Hibino, J C, Hill, W, Holzmann, K, Homma, B, Hong, A, Hoover, T, Ichihara, V V, Ikonnikov, K, Imai, D, Isenhower, M, Ishihara, M, Issah, A, Isupov, B V, Jacak, W Y, Jang, Y, Jeong, J, Jia, O, Jinnouchi, B M, Johnson, S C, Johnson, K S, Joo, D, Jouan, S, Kametani, N, Kamihara, M, Kaneta, J H, Kang, S S, Kapoor, K, Katou, S, Kelly, B, Khachaturov, A, Khanzadeev, J, Kikuchi, D H, Kim, D J, Kim, D W, Kim, E, Kim, G-B, Kim, H J, Kim, E, Kistenev, A, Kiyomichi, K, Kiyoyama, C, Klein-Boesing, H, Kobayashi, L, Kochenda, V, Kochetkov, D, Koehler, T, Kohama, M, Kopytine, D, Kotchetkov, A, Kozlov, P J, Kroon, C H, Kuberg, K, Kurita, Y, Kuroki, M J, Kweon, Y, Kwon, G S, Kyle, R, Lacey, V, Ladygin, J G, Lajoie, A, Lebedev, S, Leckey, D M, Lee, S, Lee, M J, Leitch, X H, Li, H, Lim, A, Litvinenko, M X, Liu, Y, Liu, C F, Maguire, Y I, Makdisi, A, Malakhov, V I, Manko, Y, Mao, G, Martinez, M D, Marx, H, Masui, F, Matathias, T, Matsumoto, P L, McGaughey, E, Melnikov, F, Messer, Y, Miake, J, Milan, T E, Miller, A, Milov, S, Mioduszewski, R E, Mischke, G C, Mishra, J T, Mitchell, A K, Mohanty, D P, Morrison, J M, Moss, F, Mühlbacher, D, Mukhopadhyay, M, Muniruzzaman, J, Murata, S, Nagamiya, J L, Nagle, T, Nakamura, B K, Nandi, M, Nara, J, Newby, P, Nilsson, A S, Nyanin, J, Nystrand, E, O'Brien, C A, Ogilvie, H, Ohnishi, I D, Ojha, K, Okada, M, Ono, V, Onuchin, A, Oskarsson, I, Otterlund, K, Oyama, K, Ozawa, D, Pal, A P T, Palounek, V, Pantuev, V, Papavassiliou, J, Park, A, Parmar, S F, Pate, T, Peitzmann, J-C, Peng, V, Peresedov, C, Pinkenburg, R P, Pisani, F, Plasil, M L, Purschke, A K, Purwar, J, Rak, I, Ravinovich, K F, Read, M, Reuter, K, Reygers, V, Riabov, Y, Riabov, G, Roche, A, Romana, M, Rosati, P, Rosnet, S S, Ryu, M E, Sadler, N, Saito, T, Sakaguchi, M, Sakai, S, Sakai, V, Samsonov, L, Sanfratello, R, Santo, H D, Sato, S, Sato, S, Sawada, Y, Schutz, V, Semenov, R, Seto, M R, Shaw, T K, Shea, T-A, Shibata, K, Shigaki, T, Shiina, C L, Silva, D, Silvermyr, K S, Sim, C P, Singh, V, Singh, M, Sivertz, A, Soldatov, R A, Soltz, W E, Sondheim, S P, Sorensen, I V, Sourikova, F, Staley, P W, Stankus, E, Stenlund, M, Stepanov, A, Ster, S P, Stoll, T, Sugitate, J P, Sullivan, E M, Takagui, A, Taketani, M, Tamai, K H, Tanaka, Y, Tanaka, K, Tanida, M J, Tannenbaum, P, Tarján, J D, Tepe, T L, Thomas, J, Tojo, H, Torii, R S, Towell, I, Tserruya, H, Tsuruoka, S K, Tuli, H, Tydesjö, N, Tyurin, H W, van Hecke, J, Velkovska, M, Velkovsky, V, Veszprémi, L, Villatte, A A, Vinogradov, M A, Volkov, E, Vznuzdaev, X R, Wang, Y, Watanabe, S N, White, F K, Wohn, C L, Woody, W, Xie, Y, Yang, A, Yanovich, S, Yokkaichi, G R, Young, I E, Yushmanov, W A, Zajc, C, Zhang, S, Zhou, S J, Zhou, and L, Zolin
Abstract: The azimuthal distribution of identified pi0 and inclusive photons has been measured in [FORMULA: SEE TEXT] Au+Au collisions with the PHENIX experiment at the Relativistic Heavy-Ion Collider (RHIC). The second-harmonic parameter (nu2) was measured to describe the observed anisotropy of the azimuthal distribution. The measured inclusive photon is consistent with the value expected for the photons from hadron decay and is also consistent with the lack of direct photon signal over the measured pT range 1-6 GeV/c. An attempt is made to extract nu2 of direct photons.
Published: 2005

39. Single electrons from heavy-flavor decays in collisions at

Author: S S, Adler, S, Afanasiev, C, Aidala, N N, Ajitanand, Y, Akiba, J, Alexander, R, Amirikas, L, Aphecetche, S H, Aronson, R, Averbeck, T C, Awes, R, Azmoun, V, Babintsev, A, Baldisseri, K N, Barish, P D, Barnes, B, Bassalleck, S, Bathe, S, Batsouli, V, Baublis, A, Bazilevsky, S, Belikov, Y, Berdnikov, S, Bhagavatula, J G, Boissevain, H, Borel, S, Borenstein, M L, Brooks, D S, Brown, N, Bruner, D, Bucher, H, Buesching, V, Bumazhnov, G, Bunce, J M, Burward-Hoy, S, Butsyk, X, Camard, J-S, Chai, P, Chand, W C, Chang, S, Chernichenko, C Y, Chi, J, Chiba, M, Chiu, I J, Choi, J, Choi, R K, Choudhury, T, Chujo, V, Cianciolo, Y, Cobigo, B A, Cole, P, Constantin, D, d'Enterria, G, David, H, Delagrange, A, Denisov, A, Deshpande, E J, Desmond, A, Devismes, O, Dietzsch, O, Drapier, A, Drees, R, du Rietz, A, Durum, D, Dutta, Y V, Efremenko, K, El Chenawi, A, Enokizono, H, En'yo, S, Esumi, L, Ewell, D E, Fields, F, Fleuret, S L, Fokin, B D, Fox, Z, Fraenkel, J E, Frantz, A, Franz, A D, Frawley, S-Y, Fung, S, Garpman, T K, Ghosh, A, Glenn, G, Gogiberidze, M, Gonin, J, Gosset, Y, Goto, R Granier, de Cassagnac, N, Grau, S V, Greene, M Grosse, Perdekamp, W, Guryn, H-A, Gustafsson, T, Hachiya, J S, Haggerty, H, Hamagaki, A G, Hansen, E P, Hartouni, M, Harvey, R, Hayano, N, Hayashi, X, He, M, Heffner, T K, Hemmick, J M, Heuser, M, Hibino, J C, Hill, W, Holzmann, K, Homma, B, Hong, A, Hoover, T, Ichihara, V V, Ikonnikov, K, Imai, D, Isenhower, M, Ishihara, M, Issah, A, Isupov, B V, Jacak, W Y, Jang, Y, Jeong, J, Jia, O, Jinnouchi, B M, Johnson, S C, Johnson, K S, Joo, D, Jouan, S, Kametani, N, Kamihara, J H, Kang, S S, Kapoor, K, Katou, S, Kelly, B, Khachaturov, A, Khanzadeev, J, Kikuchi, D H, Kim, D J, Kim, D W, Kim, E, Kim, G-B, Kim, H J, Kim, E, Kistenev, A, Kiyomichi, K, Kiyoyama, C, Klein-Boesing, H, Kobayashi, L, Kochenda, V, Kochetkov, D, Koehler, T, Kohama, M, Kopytine, D, Kotchetkov, A, Kozlov, P J, Kroon, C H, Kuberg, K, Kurita, Y, Kuroki, M J, Kweon, Y, Kwon, G S, Kyle, R, Lacey, V, Ladygin, J G, Lajoie, A, Lebedev, S, Leckey, D M, Lee, S, Lee, M J, Leitch, X H, Li, H, Lim, A, Litvinenko, M X, Liu, Y, Liu, C F, Maguire, Y I, Makdisi, A, Malakhov, V I, Manko, Y, Mao, G, Martinez, M D, Marx, H, Masui, F, Matathias, T, Matsumoto, P L, McGaughey, E, Melnikov, F, Messer, Y, Miake, J, Milan, T E, Miller, A, Milov, S, Mioduszewski, R E, Mischke, G C, Mishra, J T, Mitchell, A K, Mohanty, D P, Morrison, J M, Moss, F, Mühlbacher, D, Mukhopadhyay, M, Muniruzzaman, J, Murata, S, Nagamiya, J L, Nagle, T, Nakamura, B K, Nandi, M, Nara, J, Newby, P, Nilsson, A S, Nyanin, J, Nystrand, E, O'Brien, C A, Ogilvie, H, Ohnishi, I D, Ojha, K, Okada, M, Ono, V, Onuchin, A, Oskarsson, I, Otterlund, K, Oyama, K, Ozawa, D, Pal, A P T, Palounek, V, Pantuev, V, Papavassiliou, J, Park, A, Parmar, S F, Pate, T, Peitzmann, J-C, Peng, V, Peresedov, C, Pinkenburg, R P, Pisani, F, Plasil, M L, Purschke, A K, Purwar, J, Rak, I, Ravinovich, K F, Read, M, Reuter, K, Reygers, V, Riabov, Y, Riabov, G, Roche, A, Romana, M, Rosati, P, Rosnet, S S, Ryu, M E, Sadler, N, Saito, T, Sakaguchi, M, Sakai, S, Sakai, V, Samsonov, L, Sanfratello, R, Santo, H D, Sato, S, Sato, S, Sawada, Y, Schutz, V, Semenov, R, Seto, M R, Shaw, T K, Shea, T-A, Shibata, K, Shigaki, T, Shiina, C L, Silva, D, Silvermyr, K S, Sim, C P, Singh, V, Singh, M, Sivertz, A, Soldatov, R A, Soltz, W E, Sondheim, S P, Sorensen, I V, Sourikova, F, Staley, P W, Stankus, E, Stenlund, M, Stepanov, A, Ster, S P, Stoll, T, Sugitate, J P, Sullivan, E M, Takagui, A, Taketani, M, Tamai, K H, Tanaka, Y, Tanaka, K, Tanida, M J, Tannenbaum, P, Tarján, J D, Tepe, T L, Thomas, J, Tojo, H, Torii, R S, Towell, I, Tserruya, H, Tsuruoka, S K, Tuli, H, Tydesjö, N, Tyurin, H W, van Hecke, J, Velkovska, M, Velkovsky, V, Veszprémi, L, Villatte, A A, Vinogradov, M A, Volkov, E, Vznuzdaev, X R, Wang, Y, Watanabe, S N, White, F K, Wohn, C L, Woody, W, Xie, Y, Yang, A, Yanovich, S, Yokkaichi, G R, Young, I E, Yushmanov, W A, Zajc, C, Zhang, S, Zhou, S J, Zhou, and L, Zolin
Abstract: The invariant differential cross section for inclusive electron production in p+p collisions at [FORMULA: SEE TEXT] has been measured by the PHENIX experiment at the BNL Relativistic Heavy Ion Collider over the transverse momentum range 0.4or=pTOR=5.0 GeV/c in the central rapidity region ([FORMULA: SEE TEXT]). The contribution to the inclusive electron spectrum from semileptonic decays of hadrons carrying heavy flavor, i.e., charm quarks or, at high , bottom quarks, is determined via three independent methods. The resulting electron spectrum from heavy-flavor decays is compared to recent leading and next-to-leading order perturbative QCD calculations. The total cross section of charm quark-antiquark pair production is determined to be [FORMULA: SEE TEXT].
Published: 2005

40. Measurement of single electron event anisotropy in Au+Au collisions atsNN=200GeV

Author: C. A. Ogilvie, S. Afanasiev, T. K. Hemmick, Yasuo Miake, Shih-Chang Lee, Sean A. Kelly, K. S. Sim, Minghui Liu, V.A. Onuchin, L. Kochenda, S. Belikov, K. S. Joo, Y. Kuroki, Kenneth Francis Read, W. Y. Jang, Viktor Veszpremi, F. Messer, S. Butsyk, Vladimir Samsonov, I. Otterlund, I. Ravinovich, K. Imai, H. J. Kim, B. D. Fox, M. Heffner, F. Plasil, S. Batsouli, T. Peitzmann, Saskia Mioduszewski, Yves Roland Schutz, D. Pal, Jen-Chieh Peng, E. M. Takagui, Y. Yang, C. P. Singh, B. M. Johnson, K. El Chenawi, A. Isupov, S. S. Ryu, A. Devismes, H. Tsuruoka, L. Aphecetche, G. Gogiberidze, Brian Cole, R. S. Towell, S. Bathe, P. Chand, O. Dietzsch, L. Villatte, J. L. Nagle, Y. I. Makdisi, Martin Purschke, N. Hayashi, S. P. Stoll, Kensuke Homma, C. Y. Chi, K. A. Drees, H. Delagrange, S. Zhou, David D'Enterria, E. Melnikov, A. P.T. Palounek, Dipanwita Dutta, G. R. Young, Dong Jo Kim, Osamu Jinnouchi, Y. J. Kwon, T. Kohama, C. L. Silva, S. Chernichenko, S. Garpman, Yanwen Liu, M. Kopytine, Julia Velkovska, B. Khachaturov, T. Ichihara, T. Matsumoto, T. C. Awes, R. P. Pisani, L. Sanfratello, Y. Tanaka, M. J. Tannenbaum, T. K. Shea, D. Kotchetkov, S. Bhagavatula, S. Borenstein, H. Lim, M. Issah, B. Bassalleck, F. Mühlbacher, Masayasu Ishihara, L. Ewell, Do-Won Kim, P. J. Kroon, F. K. Wohn, H. A. Gustafsson, D. Jouan, Senta Greene, T. K. Ghosh, Matthew G. Reuter, Susumu Sato, M. Nara, M. Muniruzzaman, Kyoichiro Ozawa, Jun Kikuchi, V. V. Ikonnikov, M. Rosati, M. Velkovsky, Nikolay Tyurin, E. Vznuzdaev, V. Bumazhnov, J. B. Choi, Dong-Hun Kim, F. Staley, R. Azmoun, Z. Fraenkel, R. E. Mischke, C. Zhang, S. F. Pate, I. D. Ojha, Alexander Malakhov, M. Chiu, Ajit Kumar Mohanty, Joakim Nystrand, Jan Rak, W. Guryn, D. Bucher, Alexander Milov, T. A. Shibata, R. Granier de Cassagnac, T. Shiina, A. A. Vinogradov, Henrik Tydesjö, V. S. Pantuev, J. Chiba, J. T. Mitchell, K. Kiyoyama, E. O'Brien, X. R. Wang, N. Kamihara, J. Gosset, L. S. Zolin, F. Matathias, B. K. Nandi, Y. Watanabe, R. A. Soltz, D. Mukhopadhyay, A. G. Litvinenko, M. Harvey, M. Sakai, J. S. Chai, O. Drapier, J. P. Sullivan, Jiangyong Jia, Y. Goto, R. K. Choudhury, Wei Xie, G. C. Mishra, P. D. Barnes, Vladislav Manko, Y. Cobigo, Viktor Riabov, Junji Tojo, H. W. Van Hecke, A. Drees, A. Yanovich, D. Isenhower, A. Soldatov, V. Papavassiliou, Charles Maguire, S. Leckey, P. L. McGaughey, D. P. Morrison, A. Deshpande, K. Tanida, Takao Sakaguchi, S. Y. Fung, S. C. Johnson, P. Tarján, M. D. Marx, E. P. Hartouni, Gerry Bunce, W. C. Chang, T. Chujo, German Martinez, K. Okada, S. Esumi, V. I. Kochetkov, Y. J. Mao, M. Grosse Perdekamp, J. E. Frantz, C. Klein-Boesing, J. M. Burward-Hoy, V. E. Semenov, R. du Rietz, Josh Moss, M. Tamai, H. Kobayashi, A. Kozlov, M. J. Kweon, R. Seto, H. En'yo, P. Constantin, A. D. Frawley, M. J. Leitch, E. Kistenev, John Hill, K. Oyama, Roy A. Lacey, X. Camard, A. Parmar, W. A. Zajc, V. Baublis, A. Denisov, V. Cianciolo, I. Tserruya, Agneta Oskarsson, Herve Borel, Toru Sugitate, T. E. Miller, Y. Berdnikov, S. Yokkaichi, Christine Angela Aidala, Sergey Fokin, R. Santo, A. Enokizono, Yu. Efremenko, V. Singh, Y. Akiba, A. Glenn, S. H. Aronson, S. Sawada, J. D. Tepe, J. M. Heuser, S. Nagamiya, Kazuhiro Tanaka, A. Franz, Alberto Baldisseri, X. He, Hideki Hamagaki, A. Hoover, G. David, G. B. Kim, D. Koehler, S. Kametani, François Fleuret, W. Holzmann, Klaus Johannes Reygers, V. Peresedov, C. H. Kuberg, Atsushi Taketani, S. S. Kapoor, J. H. Kang, J. S. Haggerty, A. Romana, S. N. White, David Olle Rickard Silvermyr, Hirohiko Sato, S. K. Tuli, H. Masui, K. N. Barish, M. Ono, N. Grau, W. E. Sondheim, M. L. Brooks, J. G. Boissevain, P. W. Stankus, K. Katou, A. Kiyomichi, C. Pinkenburg, M. Stepanov, G. Roche, E. J. Desmond, M. Hibino, J. Park, A. Ster, R. Amirikas, I. E. Yushmanov, Hiroaki Ohnishi, Alexei Khanzadeev, J. Milan, N. Bruner, E. Stenlund, H. Buesching, Xingguo Li, V. Ladygin, M. Gonin, K. Kurita, M. Sivertz, S. P. Sorensen, Peter M. Nilsson, J. G. Lajoie, T. Hachiya, I. J. Choi, Jason Newby, J. Murata, T. L. Thomas, Ryugo S. Hayano, Y. Riabov, Kenta Shigaki, A. S. Nyanin, A. G. Hansen, Shingo Sakai, C. L. Woody, N. N. Ajitanand, M. R. Shaw, Takahiro Nakamura, M. E. Sadler, A. Durum, I. V. Sourikova, H. Torii, D. S. Brown, D. E. Fields, B. V. Jacak, A. K. Purwar, Norio Saito, V. Babintsev, E. H. Kim, S. S. Adler, G. S. Kyle, James Alexander, Y. Jeong, R. Averbeck, Byung-Sik Hong, A. Bazilevsky, Philippe Rosnet, Alexandre Lebedev, D. M. Lee, and M. A. Volkov
Subjects: Physics, Nuclear and High Energy Physics, Photon, Meson, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Elliptic flow, Electron, 01 natural sciences, 7. Clean energy, Nuclear physics, Particle decay, Transverse plane, 0103 physical sciences, High Energy Physics::Experiment, Atomic physics, PHENIX detector, Nuclear Experiment, 010306 general physics, Anisotropy
Abstract: The transverse momentum dependence of the azimuthal anisotropy parameter v(2), the second harmonic of the azimuthal distribution, for electrons at midrapidity (vertical bar eta vertical bar < 0.35) has been measured with the PHENIX detector in Au+Au collisions at root s(NN) = 200 GeV. The measurement was made with respect to the reaction plane defined at high rapidities (vertical bar eta vertical bar = 3.1-3.9). From the result we have measured the v(2) of electrons from heavy flavor decay after subtraction of the v(2) of electrons from other sources such as photon conversions and Dalitz decay from light neutral mesons. We observe a nonzero single electron v(2) with a 90% confidence level in the intermediate-p(T) region. The precision of the present data set does not permit us to conclude definitively that heavy quarks exhibit thermalization with the transverse flow of the bulk matter.
Published: 2005

41. Measurement of transverse single-spin asymmetries for midrapidity production of neutral pions and charged hadrons in polarized p + p collisions at square root(s) = 200 GeV

Author: S S, Adler, S, Afanasiev, C, Aidala, N N, Ajitanand, Y, Akiba, J, Alexander, R, Amirikas, L, Aphecetche, S H, Aronson, R, Averbeck, T C, Awes, R, Azmoun, V, Babintsev, A, Baldisseri, K N, Barish, P D, Barnes, B, Bassalleck, S, Bathe, S, Batsouli, V, Baublis, F, Bauer, A, Bazilevsky, S, Belikov, Y, Berdnikov, S, Bhagavatula, J G, Boissevain, H, Borel, S, Borenstein, M L, Brooks, D S, Brown, N, Bruner, D, Bucher, H, Buesching, V, Bumazhnov, G, Bunce, J M, Burward-Hoy, S, Butsyk, X, Camard, J-S, Chai, P, Chand, W C, Chang, S, Chernichenko, C Y, Chi, J, Chiba, M, Chiu, I J, Choi, J, Choi, R K, Choudhury, T, Chujo, V, Cianciolo, Y, Cobigo, B A, Cole, P, Constantin, D, d'Enterria, G, David, H, Delagrange, A, Denisov, A, Deshpande, E J, Desmond, A, Devismes, O, Dietzsch, O, Drapier, A, Drees, K A, Drees, R, du Rietz, A, Durum, D, Dutta, Y V, Efremenko, K, El Chenawi, A, Enokizono, H, En'yo, S, Esumi, L, Ewell, D E, Fields, F, Fleuret, S L, Fokin, B D, Fox, Z, Fraenkel, J E, Frantz, A, Franz, A D, Frawley, S-Y, Fung, S, Garpman, T K, Ghosh, A, Glenn, G, Gogiberidze, M, Gonin, J, Gosset, Y, Goto, R, Granier de Cassagnac, N, Grau, S V, Greene, M, Grosse Perdekamp, W, Guryn, H-A, Gustafsson, T, Hachiya, J S, Haggerty, H, Hamagaki, A G, Hansen, E P, Hartouni, M, Harvey, R, Hayano, N, Hayashi, X, He, M, Heffner, T K, Hemmick, J M, Heuser, M, Hibino, J C, Hill, W, Holzmann, K, Homma, B, Hong, A, Hoover, T, Ichihara, V V, Ikonnikov, K, Imai, D, Isenhower, M, Ishihara, M, Issah, A, Isupov, B V, Jacak, W Y, Jang, Y, Jeong, J, Jia, O, Jinnouchi, B M, Johnson, S C, Johnson, K S, Joo, D, Jouan, S, Kametani, N, Kamihara, J H, Kang, S S, Kapoor, K, Katou, S, Kelly, B, Khachaturov, A, Khanzadeev, J, Kikuchi, D H, Kim, D J, Kim, D W, Kim, E, Kim, G-B, Kim, H J, Kim, E, Kistenev, A, Kiyomichi, K, Kiyoyama, C, Klein-Boesing, H, Kobayashi, L, Kochenda, V, Kochetkov, D, Koehler, T, Kohama, M, Kopytine, D, Kotchetkov, A, Kozlov, P J, Kroon, C H, Kuberg, K, Kurita, Y, Kuroki, M J, Kweon, Y, Kwon, G S, Kyle, R, Lacey, V, Ladygin, J G, Lajoie, A, Lebedev, S, Leckey, D M, Lee, S, Lee, M J, Leitch, X H, Li, H, Lim, A, Litvinenko, M X, Liu, Y, Liu, C F, Maguire, Y I, Makdisi, A, Malakhov, V I, Manko, Y, Mao, G, Martinez, M D, Marx, H, Masui, F, Matathias, T, Matsumoto, P L, McGaughey, E, Melnikov, F, Messer, Y, Miake, J, Milan, T E, Miller, A, Milov, S, Mioduszewski, R E, Mischke, G C, Mishra, J T, Mitchell, A K, Mohanty, D P, Morrison, J M, Moss, F, Mühlbacher, D, Mukhopadhyay, M, Muniruzzaman, J, Murata, S, Nagamiya, J L, Nagle, T, Nakamura, B K, Nandi, M, Nara, J, Newby, P, Nilsson, A S, Nyanin, J, Nystrand, E, O'Brien, C A, Ogilvie, H, Ohnishi, I D, Ojha, K, Okada, M, Ono, V, Onuchin, A, Oskarsson, I, Otterlund, K, Oyama, K, Ozawa, D, Pal, A P T, Palounek, V, Pantuev, V, Papavassiliou, J, Park, A, Parmar, S F, Pate, T, Peitzmann, J-C, Peng, V, Peresedov, C, Pinkenburg, R P, Pisani, F, Plasil, M L, Purschke, A K, Purwar, J, Rak, I, Ravinovich, K F, Read, M, Reuter, K, Reygers, V, Riabov, Y, Riabov, G, Roche, A, Romana, M, Rosati, P, Rosnet, S S, Ryu, M E, Sadler, N, Saito, T, Sakaguchi, M, Sakai, S, Sakai, V, Samsonov, L, Sanfratello, R, Santo, H D, Sato, S, Sato, S, Sawada, Y, Schutz, V, Semenov, R, Seto, M R, Shaw, T K, Shea, T-A, Shibata, K, Shigaki, T, Shiina, C L, Silva, D, Silvermyr, K S, Sim, C P, Singh, V, Singh, M, Sivertz, A, Soldatov, R A, Soltz, W E, Sondheim, S P, Sorensen, I V, Sourikova, F, Staley, P W, Stankus, E, Stenlund, M, Stepanov, A, Ster, S P, Stoll, T, Sugitate, J P, Sullivan, E M, Takagui, A, Taketani, M, Tamai, K H, Tanaka, Y, Tanaka, K, Tanida, M J, Tannenbaum, P, Tarján, J D, Tepe, T L, Thomas, J, Tojo, H, Torii, R S, Towell, I, Tserruya, H, Tsuruoka, S K, Tuli, H, Tydesjö, N, Tyurin, H W, van Hecke, J, Velkovska, M, Velkovsky, V, Veszprémi, L, Villatte, A A, Vinogradov, M A, Volkov, E, Vznuzdaev, X R, Wang, Y, Watanabe, S N, White, F K, Wohn, C L, Woody, W, Xie, Y, Yang, A, Yanovich, S, Yokkaichi, G R, Young, I E, Yushmanov, W A, Zajc, C, Zhang, S, Zhou, S J, Zhou, and L, Zolin
Abstract: Transverse single-spin asymmetries to probe the transverse-spin structure of the proton have been measured for neutral pions and nonidentified charged hadrons from polarized proton-proton collisions at midrapidity and square root(s) = 200 GeV. The data cover a transverse momentum (pT) range 1.0-5.0 GeV/c for neutral pions and 0.5-5.0 GeV/c for charged hadrons, at a Feynman-x value of approximately zero. The asymmetries seen in this previously unexplored kinematic region are consistent with zero within errors of a few percent. In addition, the inclusive charged hadron cross section at midrapidity from 0.5pT7.0 GeV/c is presented and compared to next-to-leading order perturbative QCD (pQCD) calculations. Successful description of the unpolarized cross section above approximately 2 GeV/c suggests that pQCD is applicable in the interpretation of the asymmetry results in the relevant kinematic range.
Published: 2005

42. Production ofϕmesons at midrapidity insNN=200GeVAu+Aucollisions at relativistic energies

Author: S. N. White, T. E. Miller, R. S. Towell, S. Afanasiev, A. Ster, M. Rosati, Y. I. Makdisi, R. Santo, A. Enokizono, David D'Enterria, R. P. Pisani, Nikolay Tyurin, M. Velkovsky, H. J. Kim, B. D. Fox, H. W. Van Hecke, N. Hayashi, S. Kametani, Jen-Chieh Peng, R. Azmoun, W. E. Sondheim, Martin Purschke, E. H. Kim, X. He, L. Villatte, A. A. Vinogradov, Henrik Tydesjö, Sean A. Kelly, C. Y. Chi, V. Bumazhnov, S. F. Pate, K. Tanida, S. Bathe, Jiangyong Jia, Y. Goto, D. Kotchetkov, S. Bhagavatula, S. P. Sorensen, M. J. Tannenbaum, J. H. Kang, V. Peresedov, H. Tsuruoka, V. I. Kochetkov, D. Mukhopadhyay, Charles Maguire, S. Leckey, Kensuke Homma, A. Devismes, E. Melnikov, J. S. Haggerty, A. Romana, F. Messer, V. V. Ikonnikov, X. R. Wang, Y. Cobigo, J. S. Chai, Z. Fraenkel, S. Y. Fung, M. Heffner, D. Bucher, P. Chand, H. Masui, Y. J. Kwon, Viktor Veszpremi, S. P. Stoll, H. Delagrange, M. Issah, E. Vznuzdaev, Dong Jo Kim, S. S. Adler, G. S. Kyle, Osamu Jinnouchi, Peter M. Nilsson, R. K. Choudhury, R. du Rietz, Josh Moss, M. Tamai, S. Chernichenko, H. Lim, B. Bassalleck, F. Mühlbacher, L. Ewell, J. E. Frantz, John Hill, K. Oyama, V.A. Onuchin, S. Belikov, K. S. Joo, V. Papavassiliou, P. L. McGaughey, D. E. Fields, James Alexander, Y. Jeong, R. Averbeck, Byung-Sik Hong, T. Peitzmann, Saskia Mioduszewski, B. V. Jacak, J. Chiba, G. R. Young, M. Sakai, A. Bazilevsky, T. Shiina, L. Sanfratello, E. Kistenev, Herve Borel, J. T. Mitchell, S. Borenstein, A. G. Litvinenko, P. Tarján, G. Gogiberidze, Toru Sugitate, Yanwen Liu, M. Kopytine, Philippe Rosnet, J. M. Burward-Hoy, A. Glenn, Vladislav Manko, H. Kobayashi, A. Kozlov, S. Zhou, Alexandre Lebedev, R. Seto, W. C. Chang, G. C. Mishra, I. Tserruya, A. K. Purwar, D. M. Lee, G. Bunce, M. D. Marx, Agneta Oskarsson, J. G. Lajoie, Alberto Baldisseri, S. Sawada, J. B. Choi, Jan Rak, W. Guryn, Yu. Efremenko, Takao Sakaguchi, J. D. Tepe, O. Dietzsch, C. Klein-Boesing, Wei Xie, V. Singh, B. Khachaturov, K. N. Barish, Y. Berdnikov, T. Hachiya, R. Granier de Cassagnac, I. Ravinovich, A. Franz, Do-Won Kim, P. J. Kroon, Y. Akiba, Yves Roland Schutz, G. B. Kim, D. Koehler, A. D. Frawley, A. Deshpande, Dipanwita Dutta, François Fleuret, Y. Tanaka, K. El Chenawi, M. R. Shaw, J. Gosset, M. Ono, T. K. Shea, S. Nagamiya, Kazuhiro Tanaka, F. Plasil, T. Matsumoto, T. Chujo, X. Camard, S. S. Kapoor, J. P. Sullivan, V. S. Pantuev, D. Jouan, S. C. Johnson, Roy A. Lacey, D. Pal, T. Ichihara, Klaus Johannes Reygers, Dong-Hun Kim, A. G. Hansen, Shingo Sakai, E. M. Takagui, A. Parmar, Y. J. Mao, N. N. Ajitanand, M. J. Kweon, M. L. Brooks, Norio Saito, Y. Watanabe, Senta Greene, S. H. Aronson, F. K. Wohn, M. Harvey, T. K. Ghosh, Julia Velkovska, M. Nara, A. Isupov, S. S. Ryu, E. P. Hartouni, Matthew G. Reuter, N. Kamihara, Y. Yang, Minghui Liu, M. Chiu, Ajit Kumar Mohanty, Hirohiko Sato, C. P. Singh, B. M. Johnson, Junji Tojo, S. K. Tuli, Shih-Chang Lee, Christine Angela Aidala, A. Soldatov, K. S. Sim, W. Holzmann, I. J. Choi, Joakim Nystrand, F. Matathias, T. A. Shibata, I. D. Ojha, Alexander Malakhov, C. L. Woody, K. Kiyoyama, E. O'Brien, Takahiro Nakamura, Alexander Milov, V. Babintsev, Kenneth Francis Read, M. E. Sadler, S. Butsyk, R. A. Soltz, Hiroaki Ohnishi, L. Aphecetche, J. Milan, S. Yokkaichi, J. M. Heuser, C. L. Silva, O. Drapier, Brian Cole, Vladimir Samsonov, I. Otterlund, A. Drees, K. Imai, K. Okada, A. Durum, D. P. Morrison, Atsushi Taketani, M. Grosse Perdekamp, L. S. Zolin, B. K. Nandi, Masayasu Ishihara, J. G. Boissevain, V. E. Semenov, Susumu Sato, K. Katou, M. Muniruzzaman, D. S. Brown, A. Kiyomichi, C. Pinkenburg, F. Staley, D. Isenhower, M. A. Volkov, H. En'yo, P. Constantin, M. Stepanov, G. Roche, M. J. Leitch, Hideki Hamagaki, G. David, C. H. Kuberg, David Olle Rickard Silvermyr, I. V. Sourikova, H. Torii, P. D. Barnes, A. Yanovich, German Martinez, C. A. Ogilvie, T. L. Thomas, T. K. Hemmick, N. Grau, Yasuo Miake, Ryugo S. Hayano, H. Buesching, P. W. Stankus, Y. Riabov, Kenta Shigaki, L. Kochenda, A. S. Nyanin, J. L. Nagle, Y. Kuroki, T. C. Awes, Kyoichiro Ozawa, Xingguo Li, W. Y. Jang, Jun Kikuchi, V. Ladygin, M. Gonin, K. Kurita, M. Sivertz, T. Kohama, S. Batsouli, A. P.T. Palounek, S. Garpman, H. A. Gustafsson, R. E. Mischke, C. Zhang, Viktor Riabov, S. Esumi, W. A. Zajc, V. Baublis, A. Denisov, V. Cianciolo, Sergey Fokin, A. Hoover, E. J. Desmond, M. Hibino, J. Park, R. Amirikas, I. E. Yushmanov, Jason Newby, J. Murata, Alexei Khanzadeev, N. Bruner, and E. Stenlund
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Nuclear Theory, Hadron, Phi meson, 01 natural sciences, Nuclear physics, Particle decay, Pion, 0103 physical sciences, Quark–gluon plasma, Transverse mass, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract: We present the results of phi meson production in the K+K- decay channel from Au+Au collisions at root s(NN) =200 GeV as measured at midrapidity by the PHENIX detector at Brookhaven National Laboratory's Relativistic Heavy Ion Collider. Precision resonance centroid and width values are extracted as a function of collision centrality. No significant variation from the Particle Data Group accepted values is observed, contrary to some model predictions. The phi transverse mass spectra are fitted with a linear exponential function for which the derived inverse slope parameter is seen to be constant as a function of centrality. However, when these data are fitted by a hydrodynamic model the result is that the centrality-dependent freeze-out temperature and the expansion velocity values are consistent with the values previously derived from fitting identified charged hadron data. As a function of transverse momentum the collisions scaled peripheral-to-central yield ratio R-CP for the phi is comparable to that of pions rather than that of protons. This result lends support to theoretical models that distinguish between baryons and mesons instead of particle mass for explaining the anomalous (anti) proton yield.
Published: 2005

43. Dense-medium modifications to jet-induced hadron pair distributions in Au+Au collisions at sqrt s NN=200 GeV

Author: S S, Adler, S, Afanasiev, C, Aidala, N N, Ajitanand, Y, Akiba, J, Alexander, R, Amirikas, L, Aphecetche, S H, Aronson, R, Averbeck, T C, Awes, R, Azmoun, V, Babintsev, A, Baldisseri, K N, Barish, P D, Barnes, B, Bassalleck, S, Bathe, S, Batsouli, V, Baublis, A, Bazilevsky, S, Belikov, Y, Berdnikov, S, Bhagavatula, J G, Boissevain, H, Borel, S, Borenstein, M L, Brooks, D S, Brown, N, Bruner, D, Bucher, H, Buesching, V, Bumazhnov, G, Bunce, J M, Burward-Hoy, S, Butsyk, X, Camard, J-S, Chai, P, Chand, W C, Chang, S, Chernichenko, C Y, Chi, J, Chiba, M, Chiu, I J, Choi, J, Choi, R K, Choudhury, T, Chujo, V, Cianciolo, Y, Cobigo, B A, Cole, P, Constantin, D, d'Enterria, G, David, H, Delagrange, A, Denisov, A, Deshpande, E J, Desmond, A, Devismes, O, Dietzsch, O, Drapier, A, Drees, R, du Rietz, A, Durum, D, Dutta, Y V, Efremenko, K, El Chenawi, A, Enokizono, H, En'yo, S, Esumi, L, Ewell, D E, Fields, F, Fleuret, S L, Fokin, B D, Fox, Z, Fraenkel, J E, Frantz, A, Franz, A D, Frawley, S-Y, Fung, S, Garpman, T K, Ghosh, A, Glenn, G, Gogiberidze, M, Gonin, J, Gosset, Y, Goto, R, Granier de Cassagnac, N, Grau, S V, Greene, M, Grosse Perdekamp, W, Guryn, H-A, Gustafsson, T, Hachiya, J S, Haggerty, H, Hamagaki, A G, Hansen, E P, Hartouni, M, Harvey, R, Hayano, N, Hayashi, X, He, M, Heffner, T K, Hemmick, J M, Heuser, M, Hibino, J C, Hill, W, Holzmann, K, Homma, B, Hong, A, Hoover, T, Ichihara, V V, Ikonnikov, K, Imai, D, Isenhower, M, Ishihara, M, Issah, A, Isupov, B V, Jacak, W Y, Jang, Y, Jeong, J, Jia, O, Jinnouchi, B M, Johnson, S C, Johnson, K S, Joo, D, Jouan, S, Kametani, N, Kamihara, J H, Kang, S S, Kapoor, K, Katou, S, Kelly, B, Khachaturov, A, Khanzadeev, J, Kikuchi, D H, Kim, D J, Kim, D W, Kim, E, Kim, G-B, Kim, H J, Kim, E, Kistenev, A, Kiyomichi, K, Kiyoyama, C, Klein-Boesing, H, Kobayashi, L, Kochenda, V, Kochetkov, D, Koehler, T, Kohama, M, Kopytine, D, Kotchetkov, A, Kozlov, P J, Kroon, C H, Kuberg, K, Kurita, Y, Kuroki, M J, Kweon, Y, Kwon, G S, Kyle, R, Lacey, V, Ladygin, J G, Lajoie, A, Lebedev, S, Leckey, D M, Lee, S, Lee, M J, Leitch, X H, Li, H, Lim, A, Litvinenko, M X, Liu, Y, Liu, C F, Maguire, Y I, Makdisi, A, Malakhov, V I, Manko, Y, Mao, G, Martinez, M D, Marx, H, Masui, F, Matathias, T, Matsumoto, P L, McGaughey, E, Melnikov, F, Messer, Y, Miake, J, Milan, T E, Miller, A, Milov, S, Mioduszewski, R E, Mischke, G C, Mishra, J T, Mitchell, A K, Mohanty, D P, Morrison, J M, Moss, F, Mühlbacher, D, Mukhopadhyay, M, Muniruzzaman, J, Murata, S, Nagamiya, J L, Nagle, T, Nakamura, B K, Nandi, M, Nara, J, Newby, P, Nilsson, A S, Nyanin, J, Nystrand, E, O'Brien, C A, Ogilvie, H, Ohnishi, I D, Ojha, K, Okada, M, Ono, V, Onuchin, A, Oskarsson, I, Otterlund, K, Oyama, K, Ozawa, D, Pal, A P T, Palounek, V, Pantuev, V, Papavassiliou, J, Park, A, Parmar, S F, Pate, T, Peitzmann, J-C, Peng, V, Peresedov, C, Pinkenburg, R P, Pisani, F, Plasil, M L, Purschke, A K, Purwar, J, Rak, I, Ravinovich, K F, Read, M, Reuter, K, Reygers, V, Riabov, Y, Riabov, G, Roche, A, Romana, M, Rosati, P, Rosnet, S S, Ryu, M E, Sadler, N, Saito, T, Sakaguchi, M, Sakai, S, Sakai, V, Samsonov, L, Sanfratello, R, Santo, H D, Sato, S, Sato, S, Sawada, Y, Schutz, V, Semenov, R, Seto, M R, Shaw, T K, Shea, T-A, Shibata, K, Shigaki, T, Shiina, C L, Silva, D, Silvermyr, K S, Sim, C P, Singh, V, Singh, M, Sivertz, A, Soldatov, R A, Soltz, W E, Sondheim, S P, Sorensen, I V, Sourikova, F, Staley, P W, Stankus, E, Stenlund, M, Stepanov, A, Ster, S P, Stoll, T, Sugitate, J P, Sullivan, E M, Takagui, A, Taketani, M, Tamai, K H, Tanaka, Y, Tanaka, K, Tanida, M J, Tannenbaum, P, Tarján, J D, Tepe, T L, Thomas, J, Tojo, H, Torii, R S, Towell, I, Tserruya, H, Tsuruoka, S K, Tuli, H, Tydesjö, N, Tyurin, H W, van Hecke, J, Velkovska, M, Velkovsky, V, Veszprémi, L, Villatte, A A, Vinogradov, M A, Volkov, E, Vznuzdaev, X R, Wang, Y, Watanabe, S N, White, F K, Wohn, C L, Woody, W, Xie, Y, Yang, A, Yanovich, S, Yokkaichi, G R, Young, I E, Yushmanov, W A, Zajc, C, Zhang, S, Zhou, S J, Zhou, and L, Zolin
Abstract: Azimuthal correlations of jet-induced high-p(T) charged hadron pairs are studied at midrapidity in Au+Au collisions at sqrt[s(NN)]=200 GeV. The distribution of jet-associated partner hadrons (1.0p(T)2.5 GeV/c) per trigger hadron (2.5p(T)4.0 GeV/c) is found to vary with collision centrality, in both shape and yield, indicating a significant effect of the nuclear collision medium on the jet fragmentation process.
Published: 2005

44. Centrality Dependence of Direct Photon Production inSNN=200 GeVAu+AuCollisions

Author: S. S. Adler, S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, J. Alexander, R. Amirikas, L. Aphecetche, S. H. Aronson, R. Averbeck, T. C. Awes, R. Azmoun, V. Babintsev, A. Baldisseri, K. N. Barish, P. D. Barnes, B. Bassalleck, S. Bathe, S. Batsouli, V. Baublis, A. Bazilevsky, S. Belikov, Y. Berdnikov, S. Bhagavatula, J. G. Boissevain, H. Borel, S. Borenstein, M. L. Brooks, D. S. Brown, N. Bruner, D. Bucher, H. Buesching, V. Bumazhnov, G. Bunce, J. M. Burward-Hoy, S. Butsyk, X. Camard, J.-S. Chai, P. Chand, W. C. Chang, S. Chernichenko, C. Y. Chi, J. Chiba, M. Chiu, I. J. Choi, J. Choi, R. K. Choudhury, T. Chujo, V. Cianciolo, Y. Cobigo, B. A. Cole, P. Constantin, D. d’Enterria, G. David, H. Delagrange, A. Denisov, A. Deshpande, E. J. Desmond, A. Devismes, O. Dietzsch, O. Drapier, A. Drees, R. du Rietz, A. Durum, D. Dutta, Y. V. Efremenko, K. El Chenawi, A. Enokizono, H. En’yo, S. Esumi, L. Ewell, D. E. Fields, F. Fleuret, S. L. Fokin, B. D. Fox, Z. Fraenkel, J. E. Frantz, A. Franz, A. D. Frawley, S.-Y. Fung, S. Garpman, T. K. Ghosh, A. Glenn, G. Gogiberidze, M. Gonin, J. Gosset, Y. Goto, R. Granier de Cassagnac, N. Grau, S. V. Greene, M. Grosse Perdekamp, W. Guryn, H.-Å. Gustafsson, T. Hachiya, J. S. Haggerty, H. Hamagaki, A. G. Hansen, E. P. Hartouni, M. Harvey, R. Hayano, N. Hayashi, X. He, M. Heffner, T. K. Hemmick, J. M. Heuser, M. Hibino, J. C. Hill, W. Holzmann, K. Homma, B. Hong, A. Hoover, T. Ichihara, V. V. Ikonnikov, K. Imai, D. Isenhower, M. Ishihara, M. Issah, A. Isupov, B. V. Jacak, W. Y. Jang, Y. Jeong, J. Jia, O. Jinnouchi, B. M. Johnson, S. C. Johnson, K. S. Joo, D. Jouan, S. Kametani, N. Kamihara, J. H. Kang, S. S. Kapoor, K. Katou, S. Kelly, B. Khachaturov, A. Khanzadeev, J. Kikuchi, D. H. Kim, D. J. Kim, D. W. Kim, E. Kim, G.-B. Kim, H. J. Kim, E. Kistenev, A. Kiyomichi, K. Kiyoyama, C. Klein-Boesing, H. Kobayashi, L. Kochenda, V. Kochetkov, D. Koehler, T. Kohama, M. Kopytine, D. Kotchetkov, A. Kozlov, P. J. Kroon, C. H. Kuberg, K. Kurita, Y. Kuroki, M. J. Kweon, Y. Kwon, G. S. Kyle, R. Lacey, V. Ladygin, J. G. Lajoie, A. Lebedev, S. Leckey, D. M. Lee, S. Lee, M. J. Leitch, X. H. Li, H. Lim, A. Litvinenko, M. X. Liu, Y. Liu, C. F. Maguire, Y. I. Makdisi, A. Malakhov, V. I. Manko, Y. Mao, G. Martinez, M. D. Marx, H. Masui, F. Matathias, T. Matsumoto, P. L. McGaughey, E. Melnikov, F. Messer, Y. Miake, J. Milan, T. E. Miller, A. Milov, S. Mioduszewski, R. E. Mischke, G. C. Mishra, J. T. Mitchell, A. K. Mohanty, D. P. Morrison, J. M. Moss, F. Mühlbacher, D. Mukhopadhyay, M. Muniruzzaman, J. Murata, S. Nagamiya, J. L. Nagle, T. Nakamura, B. K. Nandi, M. Nara, J. Newby, P. Nilsson, A. S. Nyanin, J. Nystrand, E. O’Brien, C. A. Ogilvie, H. Ohnishi, I. D. Ojha, K. Okada, M. Ono, V. Onuchin, A. Oskarsson, I. Otterlund, K. Oyama, K. Ozawa, D. Pal, A. P. T. Palounek, V. Pantuev, V. Papavassiliou, J. Park, A. Parmar, S. F. Pate, T. Peitzmann, J.-C. Peng, V. Peresedov, C. Pinkenburg, R. P. Pisani, F. Plasil, M. L. Purschke, A. K. Purwar, J. Rak, I. Ravinovich, K. F. Read, M. Reuter, K. Reygers, V. Riabov, Y. Riabov, G. Roche, A. Romana, M. Rosati, P. Rosnet, S. S. Ryu, M. E. Sadler, N. Saito, T. Sakaguchi, M. Sakai, S. Sakai, V. Samsonov, L. Sanfratello, R. Santo, H. D. Sato, S. Sato, S. Sawada, Y. Schutz, V. Semenov, R. Seto, M. R. Shaw, T. K. Shea, T.-A. Shibata, K. Shigaki, T. Shiina, C. L. Silva, D. Silvermyr, K. S. Sim, C. P. Singh, V. Singh, M. Sivertz, A. Soldatov, R. A. Soltz, W. E. Sondheim, S. P. Sorensen, I. V. Sourikova, F. Staley, P. W. Stankus, E. Stenlund, M. Stepanov, A. Ster, S. P. Stoll, T. Sugitate, J. P. Sullivan, E. M. Takagui, A. Taketani, M. Tamai, K. H. Tanaka, Y. Tanaka, K. Tanida, M. J. Tannenbaum, P. Tarján, J. D. Tepe, T. L. Thomas, J. Tojo, H. Torii, R. S. Towell, I. Tserruya, H. Tsuruoka, S. K. Tuli, H. Tydesjö, N. Tyurin, H. W. van Hecke, J. Velkovska, M. Velkovsky, V. Veszprémi, L. Villatte, A. A. Vinogradov, M. A. Volkov, E. Vznuzdaev, X. R. Wang, Y. Watanabe, S. N. White, F. K. Wohn, C. L. Woody, W. Xie, Y. Yang, A. Yanovich, S. Yokkaichi, G. R. Young, I. E. Yushmanov, W. A. Zajc, C. Zhang, S. Zhou, S. J. Zhou, and L. Zolin
Subjects: Quantum chromodynamics, Physics, Particle physics, Photon, 010308 nuclear & particles physics, General Physics and Astronomy, Order (ring theory), 01 natural sciences, 7. Clean energy, Photon yield, Nuclear physics, 0103 physical sciences, Production (computer science), Nuclear Experiment, 010306 general physics, Centrality
Abstract: The first measurement of direct photons in Au+Au collisions at {radical}(s{sub NN})=200 GeV is presented. The direct photon signal is extracted as a function of the Au+Au collision centrality and compared to next-to-leading order perturbative quantum chromodynamics calculations. The direct photon yield is shown to scale with the number of nucleon-nucleon collisions for all centralities.
Published: 2005

45. Jet structure of baryon excess in Au+Au collisions atsNN=200GeV

Author: Ryugo S. Hayano, Y. Riabov, Kenta Shigaki, A. S. Nyanin, Maya Hachiya Shimomura, Sean A. Kelly, Alexander Milov, Y. I. Makdisi, A. G. Hansen, Viktor Veszpremi, O. Drapier, H. Kobayashi, E. R. Kinney, C. L. Woody, A. Lebedev, A. V. Kazantsev, Kensuke Homma, I. V. Sourikova, S. Bathe, H. Torii, D. P. Morrison, M. Chiu, Ajit Kumar Mohanty, T. A. Shibata, Agneta Oskarsson, V. E. Semenov, M. J. Tannenbaum, Hiroaki Ohnishi, J. Milan, V. V. Ikonnikov, K. Kiyoyama, Anne Marie Sickles, I. Ravinovich, B. Komkov, J. Zimányi, Y. Berdnikov, B. K. Nandi, B. Khachaturov, Y. Akiba, Senta Greene, M. Nara, Y. Liu, N. Grau, S. Nagamiya, Kazuhiro Tanaka, A. Deshpande, D. Bucher, S. Batsouli, F. Plasil, Norio Saito, M. A. L. Leite, J. M. Qualls, D. Isenhower, T. Matsumoto, K. Hasuko, I. Tserruya, Yu. Efremenko, V. Singh, D. E. Fields, Klaus Johannes Reygers, B. V. Jacak, S. Butsyk, German Martinez, E. J. Desmond, S. Y. Fung, Vladimir Samsonov, E. O'Brien, H. Borel, M. Germain, Jean-Pierre Cussonneau, I. Otterlund, G. R. Young, P. W. Stankus, Motoi Inaba, E. Melnikov, Soren Pontoppidan Sorensen, V. S. Pantuev, J. Gosset, A. Isupov, S. S. Ryu, G. B. Kim, D. Koehler, M. Grosse Perdekamp, A. K. Purwar, M. Togawa, M. A. Volkov, Joakim Nystrand, J. Chiba, M. Hibino, M. Sakai, J. P. Sullivan, J. Park, M. Harvey, Florian Bauer, L. Aphecetche, Takeo Kawabata, M. C. McCain, V. Babintsev, R. S. Towell, R. A. Soltz, A. P.T. Palounek, S. Chernichenko, S. Garpman, A. Pierson, T. E. Miller, Hirohiko Sato, S. Afanasiev, A. Ster, Jan Rak, G. C. Mishra, H. Pereira, H. Lim, Takao Sakaguchi, Junji Tojo, John Hill, K. Oyama, W. Guryn, T. Nakamura, S. K. Tuli, Tamas Ferenc Csorgo, S. Zhou, Y. Mao, R. Santo, Yoichiro Fukao, A. Enokizono, H. A. Gustafsson, Y. Tsuchimoto, Mate Csanad, H. Masui, Xingguo Li, B. Bassalleck, F. Mühlbacher, R. Granier de Cassagnac, Jen-Chieh Peng, J. L. Nagle, C. Klein-Boesing, A. D. Frawley, N. N. Ajitanand, L. Ewell, Toru Sugitate, L. D. Isenhower, R. E. Mischke, M. Konno, David Olle Rickard Silvermyr, K. Okada, Ahmed Al-Jamel, C. A. Ogilvie, R. Amirikas, T. K. Hemmick, F. Messer, M. Inuzuka, H. W. Van Hecke, I. E. Yushmanov, M. Heffner, T. Kohama, S. H. Aronson, H. En'yo, W. W. Kinnison, P. Constantin, M. E. Sadler, M. J. Leitch, J. E. Frantz, J. T. Mitchell, Dong Jo Kim, H. Tsuruoka, J. Simon-Gillo, Hideki Hamagaki, G. David, C. H. Kuberg, Yasuo Miake, A. Devismes, Osamu Jinnouchi, Alexei Khanzadeev, W. Holzmann, N. Bruner, E. Stenlund, M. Issah, A. Durum, David D'Enterria, E. Vznuzdaev, V. Ladygin, M. Gonin, V.N. Penev, Shih-Chang Lee, K. S. Sim, Viktor Riabov, F. Kajihara, H. Delagrange, X. R. Wang, T. Shiina, S. Esumi, S. Sakai, N. Hayashi, T. C. Awes, Kyoichiro Ozawa, Vladislav Manko, A. Kiss, A. Taranenko, G. Gogiberidze, Henner Buesching, W. A. Zajc, M. D. Marx, R. P. Pisani, D. S. Brown, François Fleuret, C. Y. Chi, A. Glenn, K. Kurita, S. Yokkaichi, J. M. Heuser, Jun Kikuchi, X. Zong, M. Sivertz, Nikolay Tyurin, Y. J. Kwon, T. Chujo, L. Sanfratello, M. Kopytine, J. G. Boissevain, V. Bumazhnov, M. P. Comets, L. Kochenda, V. Baublis, K. Aoki, A. Denisov, S. Borenstein, H. Hiejima, X. Camard, J. S. Chai, Y. Watanabe, V. L. Rykov, Y. Yang, Do-Won Kim, P. J. Kroon, V. Cianciolo, Dong-Hun Kim, A. Baldisseri, P. Chand, S. N. White, C. P. Singh, K. Katou, A. Parmar, Y. Kuroki, W. Y. Jang, B. M. Johnson, K. Imai, P. L. McGaughey, J. L. Drachenberg, Christine Angela Aidala, A. Kiyomichi, Sergey Fokin, C. Pinkenburg, J. M. Burward-Hoy, S. P. Sorensen, R. Kohara, Peter M. Nilsson, M. Stepanov, G. Roche, S. Kametani, P. Tarján, T. Horaguchi, A. Hoover, W. C. Chang, J. H. Kang, Pàl Hidas, J. G. Lajoie, R. Azmoun, J. S. Haggerty, T. Peitzmann, Roy A. Lacey, T. Hachiya, Saskia Mioduszewski, C. Zhang, A. Romana, M. T. Bjorndal, Minghui Liu, W. E. Sondheim, D. Mukhopadhyay, I. J. Choi, Yves Roland Schutz, S. P. Stoll, Kenneth Francis Read, D. Pal, Y. Cobigo, E. M. Takagui, V. N. Tram, T. Ichihara, F. K. Wohn, T. K. Ghosh, Matthew G. Reuter, S. S.E. Rosendahl, G. Bunce, Ch. Finck, Jason Newby, I. D. Ojha, A. Soldatov, Alexander Malakhov, J. Murata, L. S. Zolin, W. J. Park, D. Jouan, P. D. Barnes, A. Yanovich, Ferenc Deák, N. Kamihara, F. Matathias, R. Armendariz, C. L. Silva, A. Drees, Masayasu Ishihara, Susumu Sato, M. Muniruzzaman, F. Staley, K. Tanida, V. I. Kochetkov, S. Takagi, Gerd Joachim Kunde, I. Shein, K. N. Barish, M. Ono, T. J. Uam, M. L. Brooks, E. H. Kim, S. S. Adler, G. S. Kyle, N. Willis, James Alexander, Y. Jeong, R. Averbeck, Byung-Sik Hong, A. Bazilevsky, Philippe Rosnet, D. M. Lee, A. G. Litvinenko, A. Kozlov, R. Seto, B. A. Cole, S. F. Pate, V. Dzhordzhadze, X. He, V. Peresedov, Martin Purschke, V. Papavassiliou, Sébastien Gadrat, O. Dietzsch, Charles Maguire, S. Leckey, H. Okada, R. du Rietz, Josh Moss, D. Kotchetkov, S. Bhagavatula, B. D. Fox, M. Tamai, E. Kistenev, Dipanwita Dutta, K. A. Drees, Julia Velkovska, M. Rosati, Z. Fraenkel, M. Velkovsky, H. Pei, J. B. Choi, A. A. Vinogradov, K. Das, Henrik Tydesjö, E. P. Hartouni, Jiangyong Jia, Y. Goto, Robert F. Hobbs, R. K. Choudhury, S. C. Johnson, M. J. Kweon, Y. Le Bornec, H. J. Kim, S. Sawada, J. D. Tepe, A. Franz, S. S. Kapoor, L. Villatte, B. Espagnon, W. Xie, Atsushi Taketani, V.A. Onuchin, S. Belikov, K. S. Joo, Y. Tanaka, T. K. Shea, M. Kaneta, K. El Chenawi, M. R. Shaw, and T. L. Thomas
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Scattering, High Energy Physics::Phenomenology, Nuclear Theory, Hadron, 7. Clean energy, 01 natural sciences, Baryon, Nuclear physics, Deuterium, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics
Abstract: Two particle correlations between identified meson and baryon trigger particles with 2.5
Published: 2005

46. Publisher's Note: Systematic studies of the centrality andsNNdependence of thedET/dηanddNch/dηin heavy ion collisions at midrapidity [Phys. Rev. C71, 034908 (2005)]

Author: M. Gonin, M. Velkovsky, P. Rosnet, K. Kurita, M. Sivertz, A. A. Vinogradov, Henrik Tydesjö, J. E. Frantz, Jiangyong Jia, Y. Goto, Osamu Jinnouchi, F. K. Wohn, T. K. Ghosh, Matthew G. Reuter, H. J. Kim, Senta Greene, M. Nara, Y. I. Makdisi, D. E. Fields, Herve Borel, J. Gosset, J. P. Sullivan, A. Lebedev, I. D. Ojha, Alexander Malakhov, S. Yokkaichi, S. Bathe, S. Kametani, Y. Yang, S. P. Sorensen, Peter M. Nilsson, A. Enokizono, M. Chiu, Ajit Kumar Mohanty, T. A. Shibata, A. Taketani, D. Silvermyr, L. S. Zolin, L. Villatte, C. P. Singh, E. M. Takagui, Kensuke Homma, B. M. Johnson, E. Melnikov, A. K. Purwar, K. Kiyoyama, B. K. Nandi, P. D. Barnes, A. Yanovich, V. Bumazhnov, E. O'Brien, M. J. Tannenbaum, S. Chernichenko, J. G. Lajoie, T. Hachiya, H. Lim, S. Lee, A. Isupov, D. Isenhower, W. Guryn, Alexander Milov, R. Lacey, S. Y. Fung, Hideki Hamagaki, G. David, V. V. Ikonnikov, B. Khachaturov, H. Kobayashi, B. D. Fox, R. De Granier Cassagnac, B. Bassalleck, F. Mühlbacher, T. Matsumoto, L. Ewell, German Martinez, N. Kamihara, Y. Tanaka, Agneta Oskarsson, Charles Maguire, T. K. Shea, K. Oyama, Paul Constantin, O. Drapier, H. A. Torii, S. Sawada, Y. Berdnikov, D. Bucher, I. Ravinovich, D. P. Morrison, Brian Cole, G. C. Mishra, Hiroaki Ohnishi, Toru Sugitate, Y. Akiba, J. Milan, J. T. Mitchell, F. Plasil, S. Nagamiya, Kazuhiro Tanaka, Norio Saito, C. H. Kuberg, Youngil Kwon, A. Franz, S. S. Kapoor, W. C. Chang, F. Matathias, J. Chiba, M. Sakai, F. Staley, T. Peitzmann, N. N. Ajitanand, Joakim Nystrand, Klaus Johannes Reygers, S. Leckey, V. E. Semenov, O. Dietzsch, S. C. Johnson, S. S. Ryu, M. Grosse Perdekamp, S. Mioduszewski, E. J. Desmond, P. J. Kroon, J. Murata, K. S. Sim, François Fleuret, Barbara Jacak, J. Rak, Vladislav Manko, S. N. White, R. du Rietz, Josh Moss, Junji Tojo, Takahiro Nakamura, Tatsuya Chujo, H. Delagrange, J. M. Burward-Hoy, M. D. Marx, M. Tamai, Yves Roland Schutz, Jen-Chieh Peng, S. Butsyk, E. Kistenev, A. Drees, S. Zhou, J. D. Tepe, Dipanwita Dutta, Takao Sakaguchi, Henner Buesching, Y. J. Mao, Yanwen Liu, M. Kopytine, M. E. Sadler, A. Durum, D. Pal, A. Ster, K. Tanida, V. I. Kochetkov, X. Camard, T. L.T. Thomas, Xiong Wang, Xingguo Li, Christian Klein-Boesing, A. D. Frawley, J. Newby, Vladimir Samsonov, I. Otterlund, J. B. Choi, W. E. Sondheim, K. Imai, D. S. Brown, Ju Hwan Kang, Julia Velkovska, R. S. Towell, Akio Kiyomichi, V. Babintsev, Dong Jo Kim, P. Chand, A. Parmar, S. H. Aronson, M. Hibino, P. W. Stankus, F. Messer, T. E. Miller, R. Azmoun, S. S. Adler, G. S. Kyle, S. P. Stoll, W. Holzmann, G. Bunce, J.-G. Park, E. P. Hartouni, J. L. Nagle, R. Santo, C. Y. Chi, G. R. Young, I. Tserruya, D. Mukhopadhyay, Y. Cobigo, V. Singh, R. Amirikas, Y. Jeong, D. Jouan, I. E. Yushmanov, M. A. Volkov, Byung-Sik Hong, G. Gogiberidze, A. Bazilevsky, G. B. Kim, D. Koehler, S. F. Pate, C. A. Ogilvie, T. K. Hemmick, T. Kohama, Martin Purschke, C. A. Aidala, A. Glenn, Hirohiko Sato, S. K. Tuli, V. P. Ladygin, Eunja Kim, Yasuo Miake, L. Kochenda, M. Issah, Y. Kuroki, Alberto Baldisseri, D. M. Lee, M. Mendenhall, D. Kotchetkov, S. Bhagavatula, Alexei Khanzadeev, W. Y. Jang, Z. Fraenkel, R. A. Soltz, N. Bruner, E. Stenlund, R. K. Choudhury, V.A. Onuchin, S. Belikov, K. S. Joo, V. Papavassiliou, C. L. Silva, D. H. Kim, Susumu Sato, S. Esumi, M. Muniruzzaman, K. El Chenawi, D. W. Kim, Y. Watanabe, A. Soldatov, C. L. Woody, I. V. Sourikova, Ryugo S. Hayano, Y. Riabov, Kenta Shigaki, A. S. Nyanin, S. V. Afanasiev, Yu. Efremenko, L. Aphecetche, J. S. Haggerty, A. Romana, Masamichi Ishihara, H. Van Hecke, J. G. Boissevain, Minghui Liu, M. R. Shaw, Margaret Harvey, K. Katou, N. Grau, M. Heffner, Kenneth Francis Read, C. Pinkenburg, M. Stepanov, G. Roche, T. Ichihara, J. C. Hill, Wei Xie, A. Deshpande, A. G. Hansen, Shingo Sakai, David D'Enterria, I. J. Choi, R. P. Pisani, Nikolay Tyurin, T. C. Awes, Kyoichiro Ozawa, Jun Kikuchi, J. S. Chai, E. Vznuzdaev, P. L. McGaughey, T. Shiina, Ralf Peter Averbeck, X. He, V. Peresedov, H. Tsuruoka, H. Masui, L. Sanfratello, S. Borenstein, K. N. Barish, V. S. Pantuev, M. Ono, S. Batsouli, K. Okada, H. En'yo, M. J. Leitch, M. J. Kweon, M. L. Brooks, A. P.T. Palounek, A. G. Litvinenko, A. Kozlov, R. Seto, W. A. Zajc, V. Baublis, A. Denisov, V. Cianciolo, Sergey Fokin, A. Hoover, S. Garpman, J. Alexander, H. A. Gustafsson, R. E. Mischke, C. Zhang, Viktor Riabov, J. M. Heuser, M. Rosati, P. Tarján, and Sean A. Kelly
Subjects: Nuclear reaction, Nuclear physics, Physics, Nuclear and High Energy Physics, Particle properties, Heavy ion, Impact parameter, Centrality
Published: 2005

47. Midrapidity direct-photon production inp+pcollisions ats=200 GeV

Author: V. Singh, G. B. Kim, D. Koehler, Y. Tanaka, T. K. Shea, M. Rosati, M. Velkovsky, A. Glenn, Hirohiko Sato, S. K. Tuli, S. S. Adler, G. S. Kyle, E. M. Takagui, V. P. Ladygin, F. Staley, Eunja Kim, Y. Jeong, Byung-Sik Hong, Y. I. Makdisi, A. A. Vinogradov, A. Ster, S. Sawada, Henrik Tydesjö, A. Bazilevsky, G. C. Mishra, A. Franz, Wei Xie, A. Deshpande, S. S. Kapoor, S. Batsouli, N. Kamihara, J. Newby, Jiangyong Jia, Y. Goto, J. M. Heuser, V. S. Pantuev, M. Gonin, M. J. Tannenbaum, V. V. Ikonnikov, D. M. Lee, F. Matathias, S. P. Sorensen, David D'Enterria, I. J. Choi, K. Kurita, Peter M. Nilsson, F. Messer, M. Sivertz, J. G. Lajoie, T. Hachiya, S. Lee, R. A. Soltz, Hiroaki Ohnishi, J. Milan, A. Drees, D. Bucher, M. Chiu, Ajit Kumar Mohanty, H. J. Kim, C. L. Silva, D. H. Kim, S. Mioduszewski, E. J. Desmond, S. F. Pate, Jen-Chieh Peng, Yu. Efremenko, Xingguo Li, T. A. Shibata, R. P. Pisani, A. P.T. Palounek, T. Peitzmann, G. Gogiberidze, K. Kiyoyama, K. S. Sim, Alexei Khanzadeev, Xiong Wang, L. Villatte, Dong Jo Kim, K. Okada, B. D. Fox, J. H. Kang, J. S. Haggerty, H. En'yo, A. Romana, M. J. Leitch, M. J. Kweon, C. H. Kuberg, J. Chiba, B. K. Nandi, Nikolay Tyurin, M. Sakai, Susumu Sato, Junji Tojo, S. Leckey, J. M. Burward-Hoy, M. A. Volkov, M. Muniruzzaman, B. Khachaturov, H. Tsuruoka, T. Matsumoto, K. A. Drees, N. Bruner, E. Stenlund, Takao Sakaguchi, V. Papavassiliou, Yves Roland Schutz, D. Isenhower, R. du Rietz, Josh Moss, K. Tanida, German Martinez, W. A. Zajc, V. I. Kochetkov, V. Baublis, M. Tamai, A. Denisov, S. Y. Fung, C. A. Ogilvie, A. G. Hansen, Shingo Sakai, J. Rak, Y. J. Kwon, J. D. Tepe, E. Vznuzdaev, A. D. Frawley, T. K. Hemmick, E. Kistenev, D. Pal, S. H. Aronson, Joakim Nystrand, Ryugo S. Hayano, V. Cianciolo, A. Devismes, Sergey Fokin, A. Hoover, O. Dietzsch, R. S. Towell, Akio Kiyomichi, Yasuo Miake, J. B. Choi, D. W. Kim, T. Shiina, W. Holzmann, L. Sanfratello, S. Borenstein, L. Kochenda, M. Issah, Dipanwita Dutta, Alexander Milov, S. V. Afanasiev, S. Garpman, Y. Kuroki, H. Delagrange, L. Aphecetche, K. Imai, J. Alexander, O. Drapier, D. P. Morrison, T. C. Awes, Y. Riabov, Kenta Shigaki, E. P. Hartouni, A. S. Nyanin, W. Y. Jang, Kyoichiro Ozawa, Jun Kikuchi, S. Butsyk, H. A. Gustafsson, Alberto Baldisseri, Julia Velkovska, Yanwen Liu, M. Kopytine, R. E. Mischke, S. Zhou, V. E. Semenov, J. Gosset, J. P. Sullivan, C. Zhang, K. Oyama, Tatsuya Chujo, A. Lebedev, C. L. Woody, J. S. Chai, M. R. Shaw, Margaret Harvey, Norio Saito, N. Grau, J. T. Mitchell, S. P. Stoll, N. Hayashi, Viktor Riabov, P. L. McGaughey, X. He, H. A. Torii, G. Bunce, Toru Sugitate, J.-G. Park, I. V. Sourikova, Vladislav Manko, M. D. Marx, T. E. Miller, M. Hibino, Ralf Peter Averbeck, V. Babintsev, J. C. Hill, R. Santo, D. Jouan, R. Amirikas, Masamichi Ishihara, S. Yokkaichi, I. E. Yushmanov, Minghui Liu, H. Kobayashi, C. Y. Chi, M. Heffner, V. Peresedov, Kenneth Francis Read, T. Ichihara, G. R. Young, X. Camard, Hideki Hamagaki, H. Van Hecke, G. David, Agneta Oskarsson, J. Murata, A. Parmar, Y. Berdnikov, Y. Akiba, J. G. Boissevain, K. Katou, François Fleuret, S. Nagamiya, Kazuhiro Tanaka, C. Pinkenburg, Klaus Johannes Reygers, S. Kametani, Y. Yang, Osamu Jinnouchi, W. Guryn, M. Stepanov, G. Roche, R. Lacey, C. P. Singh, F. K. Wohn, T. K. Ghosh, Matthew G. Reuter, H. Masui, B. M. Johnson, R. Granier de Cassagnac, S. Bathe, Henner Buesching, Charles Maguire, I. D. Ojha, Alexander Malakhov, A. Isupov, P. J. Kroon, D. Silvermyr, D. S. Brown, P. Chand, L. S. Zolin, Christian Klein-Boesing, Brian Cole, P. D. Barnes, A. Yanovich, S. N. White, Kensuke Homma, P. W. Stankus, K. N. Barish, E. Melnikov, P. Rosnet, W. E. Sondheim, M. Ono, S. Chernichenko, H. Lim, B. Bassalleck, F. Mühlbacher, L. Ewell, M. L. Brooks, V.A. Onuchin, A. G. Litvinenko, S. Belikov, K. S. Joo, A. Kozlov, R. Seto, S. Esumi, D. E. Fields, K. El Chenawi, Vladimir Samsonov, I. Otterlund, S. C. Johnson, Y. J. Mao, A. K. Purwar, J. L. Nagle, T. Kohama, V. Bumazhnov, N. N. Ajitanand, Takahiro Nakamura, M. E. Sadler, A. Durum, P. Tarján, Sean A. Kelly, W. C. Chang, Viktor Veszpremi, Barbara Jacak, Martin Purschke, Senta Greene, M. Nara, C. A. Aidala, E. O'Brien, Paul Constantin, D. Kotchetkov, S. Bhagavatula, M. Grosse Perdekamp, Z. Fraenkel, R. K. Choudhury, I. Ravinovich, Y. Watanabe, F. Plasil, A. Soldatov, S. S. Ryu, T. L.T. Thomas, R. Azmoun, D. Mukhopadhyay, Y. Cobigo, J. E. Frantz, Herve Borel, A. Enokizono, A. Taketani, and I. Tserruya
Subjects: Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Particle physics, Photon, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Perturbative QCD, 01 natural sciences, 0103 physical sciences, Transverse momentum, High Energy Physics::Experiment, Production (computer science), Nuclear Experiment, 010306 general physics
Abstract: A measurement of direct photons in $p+p$ collisions at $\sqrt{s}=200\text{ }\text{ }\mathrm{GeV}$ is presented. A photon excess above background from ${\ensuremath{\pi}}^{0}\ensuremath{\rightarrow}\ensuremath{\gamma}+\ensuremath{\gamma}$, $\ensuremath{\eta}\ensuremath{\rightarrow}\ensuremath{\gamma}+\ensuremath{\gamma}$ and other decays is observed in the transverse momentum range $5.5l{p}_{\mathrm{T}}l7\text{ }\text{ }\mathrm{GeV}/c$. The result is compared to a next-to-leading-order perturbative QCD calculation. Within errors, good agreement is found between the QCD calculation and the measured result.
Published: 2005

48. Deuteron and Antideuteron Production inAu+AuCollisions atsNN=200 GeV

Author: S. S. Adler, S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, J. Alexander, R. Amirikas, L. Aphecetche, S. H. Aronson, R. Averbeck, T. C. Awes, R. Azmoun, V. Babintsev, A. Baldisseri, K. N. Barish, P. D. Barnes, B. Bassalleck, S. Bathe, S. Batsouli, V. Baublis, A. Bazilevsky, S. Belikov, Y. Berdnikov, S. Bhagavatula, J. G. Boissevain, H. Borel, S. Borenstein, M. L. Brooks, D. S. Brown, N. Bruner, D. Bucher, H. Buesching, V. Bumazhnov, G. Bunce, J. M. Burward-Hoy, S. Butsyk, X. Camard, J.-S. Chai, P. Chand, W. C. Chang, S. Chernichenko, C. Y. Chi, J. Chiba, M. Chiu, I. J. Choi, J. Choi, R. K. Choudhury, T. Chujo, V. Cianciolo, Y. Cobigo, B. A. Cole, P. Constantin, D. d’Enterria, G. David, H. Delagrange, A. Denisov, A. Deshpande, E. J. Desmond, A. Devismes, O. Dietzsch, O. Drapier, A. Drees, R. du Rietz, A. Durum, D. Dutta, Y. V. Efremenko, K. El Chenawi, A. Enokizono, H. En’yo, S. Esumi, L. Ewell, D. E. Fields, F. Fleuret, S. L. Fokin, B. D. Fox, Z. Fraenkel, J. E. Frantz, A. Franz, A. D. Frawley, S.-Y. Fung, S. Garpman, T. K. Ghosh, A. Glenn, G. Gogiberidze, M. Gonin, J. Gosset, Y. Goto, R. Granier de Cassagnac, N. Grau, S. V. Greene, M. Grosse Perdekamp, W. Guryn, H.-Å. Gustafsson, T. Hachiya, J. S. Haggerty, H. Hamagaki, A. G. Hansen, E. P. Hartouni, M. Harvey, R. Hayano, N. Hayashi, X. He, M. Heffner, T. K. Hemmick, J. M. Heuser, M. Hibino, J. C. Hill, W. Holzmann, K. Homma, B. Hong, A. Hoover, T. Ichihara, V. V. Ikonnikov, K. Imai, D. Isenhower, M. Ishihara, M. Issah, A. Isupov, B. V. Jacak, W. Y. Jang, Y. Jeong, J. Jia, O. Jinnouchi, B. M. Johnson, S. C. Johnson, K. S. Joo, D. Jouan, S. Kametani, N. Kamihara, J. H. Kang, S. S. Kapoor, K. Katou, S. Kelly, B. Khachaturov, A. Khanzadeev, J. Kikuchi, D. H. Kim, D. J. Kim, D. W. Kim, E. Kim, G.-B. Kim, H. J. Kim, E. Kistenev, A. Kiyomichi, K. Kiyoyama, C. Klein-Boesing, H. Kobayashi, L. Kochenda, V. Kochetkov, D. Koehler, T. Kohama, M. Kopytine, D. Kotchetkov, A. Kozlov, P. J. Kroon, C. H. Kuberg, K. Kurita, Y. Kuroki, M. J. Kweon, Y. Kwon, G. S. Kyle, R. Lacey, V. Ladygin, J. G. Lajoie, A. Lebedev, S. Leckey, D. M. Lee, S. Lee, M. J. Leitch, X. H. Li, H. Lim, A. Litvinenko, M. X. Liu, Y. Liu, C. F. Maguire, Y. I. Makdisi, A. Malakhov, V. I. Manko, Y. Mao, G. Martinez, M. D. Marx, H. Masui, F. Matathias, T. Matsumoto, P. L. McGaughey, E. Melnikov, F. Messer, Y. Miake, J. Milan, T. E. Miller, A. Milov, S. Mioduszewski, R. E. Mischke, G. C. Mishra, J. T. Mitchell, A. K. Mohanty, D. P. Morrison, J. M. Moss, F. Mühlbacher, D. Mukhopadhyay, M. Muniruzzaman, J. Murata, S. Nagamiya, J. L. Nagle, T. Nakamura, B. K. Nandi, M. Nara, J. Newby, P. Nilsson, A. S. Nyanin, J. Nystrand, E. O’Brien, C. A. Ogilvie, H. Ohnishi, I. D. Ojha, K. Okada, M. Ono, V. Onuchin, A. Oskarsson, I. Otterlund, K. Oyama, K. Ozawa, D. Pal, A. P. T. Palounek, V. Pantuev, V. Papavassiliou, J. Park, A. Parmar, S. F. Pate, T. Peitzmann, J.-C. Peng, V. Peresedov, C. Pinkenburg, R. P. Pisani, F. Plasil, M. L. Purschke, A. K. Purwar, J. Rak, I. Ravinovich, K. F. Read, M. Reuter, K. Reygers, V. Riabov, Y. Riabov, G. Roche, A. Romana, M. Rosati, P. Rosnet, S. S. Ryu, M. E. Sadler, N. Saito, T. Sakaguchi, M. Sakai, S. Sakai, V. Samsonov, L. Sanfratello, R. Santo, H. D. Sato, S. Sato, S. Sawada, Y. Schutz, V. Semenov, R. Seto, M. R. Shaw, T. K. Shea, T.-A. Shibata, K. Shigaki, T. Shiina, C. L. Silva, D. Silvermyr, K. S. Sim, C. P. Singh, V. Singh, M. Sivertz, A. Soldatov, R. A. Soltz, W. E. Sondheim, S. P. Sorensen, I. V. Sourikova, F. Staley, P. W. Stankus, E. Stenlund, M. Stepanov, A. Ster, S. P. Stoll, T. Sugitate, J. P. Sullivan, E. M. Takagui, A. Taketani, M. Tamai, K. H. Tanaka, Y. Tanaka, K. Tanida, M. J. Tannenbaum, P. Tarján, J. D. Tepe, T. L. Thomas, J. Tojo, H. Torii, R. S. Towell, I. Tserruya, H. Tsuruoka, S. K. Tuli, H. Tydesjö, N. Tyurin, H. W. van Hecke, J. Velkovska, M. Velkovsky, V. Veszprémi, L. Villatte, A. A. Vinogradov, M. A. Volkov, E. Vznuzdaev, X. R. Wang, Y. Watanabe, S. N. White, F. K. Wohn, C. L. Woody, W. Xie, Y. Yang, A. Yanovich, S. Yokkaichi, G. R. Young, I. E. Yushmanov, W. A. Zajc, C. Zhang, S. Zhou, S. J. Zhou, and L. Zolin
Subjects: Physics, Coalescence (physics), Particle physics, 010308 nuclear & particles physics, Nuclear Theory, General Physics and Astronomy, 01 natural sciences, Spectral line, Nuclear physics, Deuterium, Antiproton, Phase space, 0103 physical sciences, Transverse momentum, Yield ratio, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Nuclear Experiment, 010306 general physics, Nucleon
Abstract: The production of deuterons and antideuterons in the transverse momentum range 1.1 < p(T)< 4.3 GeV/c at midrapidity in Au+Au collisions at root s(NN) = 200 GeV has been studied by the PHENIX experiment at RHIC. A coalescence analysis, comparing the deuteron and antideuteron spectra with that of proton and antiproton, has been performed. The coalescence probability is equal for both deuterons and antideuterons and it increases as a function of p(T), which is consistent with an expanding collision zone. Comparing (anti)proton yields, (p) over bar /p = 0.73 +/- 0.01, with (anti)deuteron yields, (d) over bar /d = 0.47 +/- 0.03, we estimate that (n) over bar /n = 0.64 +/- 0.04. The nucleon phase space density is estimated from the coalescence measurement.
Published: 2005

49. Systematic studies of the centrality andsNNdependence of thedET/dηanddNch/dηin heavy ion collisions at midrapidity

Author: M. Rosati, R. S. Towell, P. Chand, Sean A. Kelly, V.A. Onuchin, M. Velkovsky, S. Belikov, K. S. Joo, F. Plasil, Y. I. Makdisi, S. F. Pate, B. D. Fox, Alexander Milov, A. A. Vinogradov, Henrik Tydesjö, V. Bumazhnov, S. Afanasiev, N. Grau, O. Drapier, S. Garpman, Jiangyong Jia, S. P. Sorensen, H. Tsuruoka, Y. Goto, D. P. Morrison, A. Isupov, A. Ster, S. S. Ryu, H. J. Kim, X. R. Wang, M. J. Tannenbaum, C. Y. Chi, E. H. Kim, V. E. Semenov, Y. J. Kwon, H. A. Gustafsson, L. Sanfratello, Peter M. Nilsson, C. L. Silva, V. V. Ikonnikov, I. Tserruya, P. W. Stankus, F. Messer, T. C. Awes, Kyoichiro Ozawa, L. Villatte, K. El Chenawi, M. R. Shaw, Jun Kikuchi, G. R. Young, P. Tarján, S. Borenstein, Yu. Efremenko, V. Singh, Martin Purschke, S. Zhou, R. E. Mischke, C. Zhang, W. C. Chang, S. P. Stoll, K. N. Barish, M. Heffner, M. Issah, G. B. Kim, Charles Maguire, S. Leckey, Masayasu Ishihara, J. G. Lajoie, T. Hachiya, J. B. Choi, O. Dietzsch, D. Koehler, M. Mendenhall, Roy A. Lacey, R. du Rietz, Josh Moss, Senta Greene, G. Bunce, D. Bucher, Susumu Sato, D. Durum, V. Papavassiliou, G. Gogiberidze, Jan Rak, E. Vznuzdaev, W. Guryn, M. Tamai, J. Chiba, M. Sakai, M. Muniruzzaman, Minghui Liu, D. Kotchetkov, S. Bhagavatula, M. Ono, E. P. Hartouni, M. Nara, J. E. Frantz, V. S. Pantuev, Julia Velkovska, M. Harvey, T. Peitzmann, Saskia Mioduszewski, Viktor Riabov, S. Butsyk, Vladimir Samsonov, E. Kistenev, Kenneth Francis Read, R. Granier de Cassagnac, B. Khachaturov, I. J. Choi, G. C. Mishra, F. Staley, K. Tanida, T. Shiina, Z. Fraenkel, I. Otterlund, Junji Tojo, D. Jouan, Hirohiko Sato, S. K. Tuli, K. Okada, M. A. Volkov, S. Esumi, T. Matsumoto, A. Glenn, R. K. Choudhury, H. En'yo, P. Constantin, M. J. Leitch, Yves Roland Schutz, J. S. Chai, E. O'Brien, D. Pal, W. A. Zajc, M. L. Brooks, Do-Won Kim, P. J. Kroon, Takao Sakaguchi, V. Ladygin, M. Gonin, C. Klein-Boesing, R. A. Soltz, H. Borel, V. Baublis, P. L. McGaughey, V. I. Kochetkov, S. Sawada, Shih-Chang Lee, J. D. Tepe, S. C. Johnson, A. Franz, Y. J. Mao, M. J. Kweon, Dong-Hun Kim, C. A. Ogilvie, T. K. Hemmick, Jen-Chieh Peng, E. M. Takagui, J. L. Nagle, A. Denisov, Yasuo Miake, V. Cianciolo, Y. Tanaka, J. M. Burward-Hoy, Y. Yang, Joakim Nystrand, A. D. Frawley, K. S. Sim, M. Grosse Perdekamp, Sergey Fokin, J. Gosset, T. K. Shea, S. S. Kapoor, A. G. Litvinenko, C. P. Singh, T. Kohama, J. P. Sullivan, Dong Jo Kim, B. M. Johnson, Wei Xie, L. Kochenda, K. Kurita, S. H. Aronson, A. Hoover, S. S. Adler, G. S. Kyle, Y. Kuroki, W. Y. Jang, Osamu Jinnouchi, A. G. Hansen, A. Kozlov, S. Y. Fung, W. Holzmann, James Alexander, S. Batsouli, K. Imai, R. Seto, Atsushi Taketani, M. Sivertz, Shingo Sakai, David Olle Rickard Silvermyr, A. Deshpande, Brian Cole, David D'Enterria, R. Azmoun, Y. Jeong, R. Averbeck, Byung-Sik Hong, R. P. Pisani, X. He, C. L. Woody, Nikolay Tyurin, D. Mukhopadhyay, V. Peresedov, A. Bazilevsky, Hiroaki Ohnishi, J. Milan, Y. Cobigo, A. P.T. Palounek, Y. Watanabe, Philippe Rosnet, Hideki Hamagaki, G. David, H. Buesching, H. Masui, C. H. Kuberg, Xingguo Li, Alexandre Lebedev, I. V. Sourikova, H. Torii, T. L. Thomas, D. M. Lee, Ryugo S. Hayano, Y. Riabov, A. Soldatov, Kenta Shigaki, A. S. Nyanin, John Hill, K. Oyama, Yi Liu, S. Yokkaichi, A. Dutta, Toru Sugitate, Norio Saito, L. Aphecetche, J. M. Heuser, V. Babintsev, François Fleuret, S. N. White, J. G. Boissevain, W. E. Sondheim, T. Ichihara, F. K. Wohn, K. Katou, T. K. Ghosh, Matthew G. Reuter, I. D. Ojha, Alexander Malakhov, L. S. Zolin, P. D. Barnes, A. Yanovich, A. Kiyomichi, C. Pinkenburg, M. Stepanov, G. Roche, S. Kametani, J. H. Kang, J. S. Haggerty, A. Romana, E. J. Desmond, M. Hibino, J. Park, R. Amirikas, I. E. Yushmanov, Jason Newby, J. Murata, Alexei Khanzadeev, N. Bruner, E. Stenlund, H. Kobayashi, Agneta Oskarsson, Y. Berdnikov, Y. Akiba, S. Nagamiya, Kazuhiro Tanaka, Klaus Johannes Reygers, H. W. Van Hecke, D. E. Fields, B. V. Jacak, A. K. Purwar, N. N. Ajitanand, Takahiro Nakamura, M. E. Sadler, N. Kamihara, F. Matathias, D. S. Brown, A. Drees, T. E. Miller, R. Santo, A. Enokizono, S. Bathe, Kensuke Homma, H. Delagrange, E. Melnikov, S. Chernichenko, H. Lim, B. Bassalleck, F. Mühlbacher, L. Ewell, M. Kopytine, A. Baldisseri, J. T. Mitchell, Vladislav Manko, M. D. Marx, M. Chiu, Ajit Kumar Mohanty, T. A. Shibata, K. Kiyoyama, B. K. Nandi, D. Isenhower, German Martinez, T. Chujo, X. Camard, A. Parmar, Christine Angela Aidala, and I. Ravinovich
Subjects: Excitation function, Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Theoretical models, 01 natural sciences, Charged particle, Nuclear physics, 0103 physical sciences, Heavy ion, Multiplicity (chemistry), Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider, Centrality
Abstract: The PHENIX experiment at the relativistic heavy ion collider (RHIC) has measured transverse energy and charged particle multiplicity at midrapidity in $\mathrm{Au}+\mathrm{Au}$ collisions at center-of-mass energies $\sqrt{{s}_{\mathrm{NN}}}=19.6,130$, and $200\phantom{\rule{0.3em}{0ex}}\text{GeV}$ as a function of centrality. The presented results are compared to measurements from other RHIC experiments and experiments at lower energies. The $\sqrt{{s}_{\mathrm{NN}}}$ dependence of $dE{}_{T}/d\ensuremath{\eta}$ and $dN{}_{\mathrm{ch}}/d\ensuremath{\eta}$ per pair of participants is consistent with logarithmic scaling for the most central events. The centrality dependence of $dE{}_{T}/d\ensuremath{\eta}$ and $dN{}_{\mathrm{ch}}/d\ensuremath{\eta}$ is similar at all measured incident energies. At RHIC energies, the ratio of transverse energy per charged particle was found to be independent of centrality and growing slowly with $\sqrt{{s}_{\mathrm{NN}}}$. A survey of comparisons between the data and available theoretical models is also presented.
Published: 2005

50. Centrality dependence of direct photon production in (square root)S(NN) = 200 GeV Au + Au collisions

Author: S S, Adler, S, Afanasiev, C, Aidala, N N, Ajitanand, Y, Akiba, J, Alexander, R, Amirikas, L, Aphecetche, S H, Aronson, R, Averbeck, T C, Awes, R, Azmoun, V, Babintsev, A, Baldisseri, K N, Barish, P D, Barnes, B, Bassalleck, S, Bathe, S, Batsouli, V, Baublis, A, Bazilevsky, S, Belikov, Y, Berdnikov, S, Bhagavatula, J G, Boissevain, H, Borel, S, Borenstein, M L, Brooks, D S, Brown, N, Bruner, D, Bucher, H, Buesching, V, Bumazhnov, G, Bunce, J M, Burward-Hoy, S, Butsyk, X, Camard, J-S, Chai, P, Chand, W C, Chang, S, Chernichenko, C Y, Chi, J, Chiba, M, Chiu, I J, Choi, J, Choi, R K, Choudhury, T, Chujo, V, Cianciolo, Y, Cobigo, B A, Cole, P, Constantin, D, d'Enterria, G, David, H, Delagrange, A, Denisov, A, Deshpande, E J, Desmond, A, Devismes, O, Dietzsch, O, Drapier, A, Drees, R, du Rietz, A, Durum, D, Dutta, Y V, Efremenko, K, El Chenawi, A, Enokizono, H, En'yo, S, Esumi, L, Ewell, D E, Fields, F, Fleuret, S L, Fokin, B D, Fox, Z, Fraenkel, J E, Frantz, A, Franz, A D, Frawley, S-Y, Fung, S, Garpman, T K, Ghosh, A, Glenn, G, Gogiberidze, M, Gonin, J, Gosset, Y, Goto, R, Granier de Cassagnac, N, Grau, S V, Greene, M Grosse, Perdekamp, W, Guryn, H-A, Gustafsson, T, Hachiya, J S, Haggerty, H, Hamagaki, A G, Hansen, E P, Hartouni, M, Harvey, R, Hayano, N, Hayashi, X, He, M, Heffner, T K, Hemmick, J M, Heuser, M, Hibino, J C, Hill, W, Holzmann, K, Homma, B, Hong, A, Hoover, T, Ichihara, V V, Ikonnikov, K, Imai, D, Isenhower, M, Ishihara, M, Issah, A, Isupov, B V, Jacak, W Y, Jang, Y, Jeong, J, Jia, O, Jinnouchi, B M, Johnson, S C, Johnson, K S, Joo, D, Jouan, S, Kametani, N, Kamihara, J H, Kang, S S, Kapoor, K, Katou, S, Kelly, B, Khachaturov, A, Khanzadeev, J, Kikuchi, D H, Kim, D J, Kim, D W, Kim, E, Kim, G-B, Kim, H J, Kim, E, Kistenev, A, Kiyomichi, K, Kiyoyama, C, Klein-Boesing, H, Kobayashi, L, Kochenda, V, Kochetkov, D, Koehler, T, Kohama, M, Kopytine, D, Kotchetkov, A, Kozlov, P J, Kroon, C H, Kuberg, K, Kurita, Y, Kuroki, M J, Kweon, Y, Kwon, G S, Kyle, R, Lacey, V, Ladygin, J G, Lajoie, A, Lebedev, S, Leckey, D M, Lee, S, Lee, M J, Leitch, X H, Li, H, Lim, A, Litvinenko, M X, Liu, Y, Liu, C F, Maguire, Y I, Makdisi, A, Malakhov, V I, Manko, Y, Mao, G, Martinez, M D, Marx, H, Masui, F, Matathias, T, Matsumoto, P L, McGaughey, E, Melnikov, F, Messer, Y, Miake, J, Milan, T E, Miller, A, Milov, S, Mioduszewski, R E, Mischke, G C, Mishra, J T, Mitchell, A K, Mohanty, D P, Morrison, J M, Moss, F, Mühlbacher, D, Mukhopadhyay, M, Muniruzzaman, J, Murata, S, Nagamiya, J L, Nagle, T, Nakamura, B K, Nandi, M, Nara, J, Newby, P, Nilsson, A S, Nyanin, J, Nystrand, E, O'Brien, C A, Ogilvie, H, Ohnishi, I D, Ojha, K, Okada, M, Ono, V, Onuchin, A, Oskarsson, I, Otterlund, K, Oyama, K, Ozawa, D, Pal, A P T, Palounek, V, Pantuev, V, Papavassiliou, J, Park, A, Parmar, S F, Pate, T, Peitzmann, J-C, Peng, V, Peresedov, C, Pinkenburg, R P, Pisani, F, Plasil, M L, Purschke, A K, Purwar, J, Rak, I, Ravinovich, K F, Read, M, Reuter, K, Reygers, V, Riabov, Y, Riabov, G, Roche, A, Romana, M, Rosati, P, Rosnet, S S, Ryu, M E, Sadler, N, Saito, T, Sakaguchi, M, Sakai, S, Sakai, V, Samsonov, L, Sanfratello, R, Santo, H D, Sato, S, Sato, S, Sawada, Y, Schutz, V, Semenov, R, Seto, M R, Shaw, T K, Shea, T-A, Shibata, K, Shigaki, T, Shiina, C L, Silva, D, Silvermyr, K S, Sim, C P, Singh, V, Singh, M, Sivertz, A, Soldatov, R A, Soltz, W E, Sondheim, S P, Sorensen, I V, Sourikova, F, Staley, P W, Stankus, E, Stenlund, M, Stepanov, A, Ster, S P, Stoll, T, Sugitate, J P, Sullivan, E M, Takagui, A, Taketani, M, Tamai, K H, Tanaka, Y, Tanaka, K, Tanida, M J, Tannenbaum, P, Tarján, J D, Tepe, T L, Thomas, J, Tojo, H, Torii, R S, Towell, I, Tserruya, H, Tsuruoka, S K, Tuli, H, Tydesjö, N, Tyurin, H W, van Hecke, J, Velkovska, M, Velkovsky, V, Veszprémi, L, Villatte, A A, Vinogradov, M A, Volkov, E, Vznuzdaev, X R, Wang, Y, Watanabe, S N, White, F K, Wohn, C L, Woody, W, Xie, Y, Yang, A, Yanovich, S, Yokkaichi, G R, Young, I E, Yushmanov, W A, Zajc, C, Zhang, S, Zhou, S J, Zhou, and L, Zolin
Abstract: The first measurement of direct photons in Au + Au collisions at (square root)S(NN) = 200 GeV is presented. The direct photon signal is extracted as a function of the Au + Au collision centrality and compared to next-to-leading order perturbative quantum chromodynamics calculations. The direct photon yield is shown to scale with the number of nucleon-nucleon collisions for all centralities.
Published: 2005

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