检索结果-内蒙古大学图书馆

International Conference on Communications, Circuits and systems (ICCCAS)

作者： Hua Xu Zupeng Li Hui Zheng National Key Laboratory of Signal Processing IETTC Chengdu China National Digital Switching System Engineering & Technological R&D Center Zhengzhou China The University of Electronic Science & Technology Chengdu China

ISBN: (纸本)0780386477

We propose a non-data-aided (NdA) signal-to-noise-ratio (SNr) estimation algorithm for quadrature amplitude modulation (QAM) signals in an additive white Gaussian noise (AWGN) channel. The NdA SNr estimation algorithm for QAM signals is derived based on a statistical ratio of observables over a block of data. The simple analysis and computer simulation for some kinds of QAM signals have been done, the results of which have proved that all the tested QAM signals can be effectively estimated by this algorithm.

关键词： Quadrature amplitude modulation Signal to noise ratio AWGN Amplitude estimation Additive white noise data analysis Signal analysis Algorithm design and analysis Computer simulation Testing

来源：评论

学校读者我要写书评

暂无评论

Midrapidity direct-photon production in p+p collisions at s=200 GeV

引用

Physical review d 2005年第7期71卷 071102(R)-071102(R)页

作者： 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 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. Makdi Brookhaven National Laboratory Upton New York 11973-5000 USA Joint Institute for Nuclear Research 141980 Dubna Moscow Region Russia Chemistry Department Stony Brook University SUNY Stony Brook New York 11794-3400 USA KEK High Energy Accelerator Research Organization Tsukuba-shi Ibaraki-ken 305-0801 Japan RIKEN (The Institute of Physical and Chemical Research) Wako Saitama 351-0198 Japan Florida State University Tallahassee Florida 32306 USA SUBATECH (Ecole des Mines de Nantes CNRS-IN2P3 Université de Nantes) BP 20722-44307 Nantes France Department of Physics and Astronomy Stony Brook University SUNY Stony Brook New York 11794 USA Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA Institute for High Energy Physics (IHEP) Protvino Russia Dapnia CEA Saclay F-91191 Gif-sur-Yvette France University of California–Riverside Riverside California 92521 USA Los Alamos National Laboratory Los Alamos New Mexico 87545 USA University of New Mexico Albuquerque New Mexico 87131 USA Institut für Kernphysik University of Muenster D-48149 Muenster Germany Columbia University New York New York 10027 USA and Nevis Laboratories Irvington New York 10533 USA PNPI Petersburg Nuclear Physics Institute Gatchina Russia RIKEN BNL Research Center Brookhaven National Laboratory Upton New York 11973-5000 USA Iowa State University Ames Iowa 50011 USA St. Petersburg State Technical University St. Petersburg Russia Laboratoire Leprince-Ringuet Ecole Polytechnique CNRS-IN2P3 Route de Saclay F-91128 Palaiseau France New Mexico State University Las Cruces New Mexico 88003 USA Lawrence Livermore National Laboratory Livermore California 94550 USA KAERI Cyclotron Application Laboratory Seoul Korea Bhabha Atomic Research Centre Bombay 400 085 India Institute of Physics Academia Sinica Taipei 11529 Taiwan Yonsei University IPAP Seoul 120-749 Korea Kangnung National University Kangnung 210-702 Korea Instituto de Física Universidade de São Paulo Caixa

A measurement of direct photons in p+p collisions at s=200 GeV is presented. A photon excess above background from π0→γ+γ, η→γ+γ and other decays is observed in the transverse momentum range 5.5result 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.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Quantification frameworks and their application for evaluating the software quality factor using quality characteristic value

Quantification frameworks and their application for evaluati...

引用

12th International Conference on Nuclear engineering (ICONE12) - 2004

作者： Kim, Chansoo Chung, Chang-Hyun Ahn, Kwang Won Department of Nuclear Engineering Seoul National University San 56-1 Shilim-dong Gwanak-gu Seoul 151-742 Korea Republic of System R and D Center WOORI Technology Inc. Bongcheon-7dong Gwanak-gu Seoul 151-835 Korea Republic of

Many problems, related with safety, frequently occur because digital Instrument & Control systems are widely used and expanding their ranges to many applications in Nuclear Power Plants. It, however, does not hold a general position to estimate an appropriate software quality. Thus, the Quality Characteristic Value, a software quality factor through each software life cycle, is suggested in this paper. The Quality Characteristic Value is obtained as following procedure: 1) Scoring Quality Characteristic Factors (especially correctness, traceability, completeness, and understandability) onto Software Verification and Validation results, 2) deriving the diamond-shaped graphs by setting values of Factors at each axis and lining every points, and lastly 3) Measuring the area of the graph for Quality Characteristic Value. In this paper, this methodology is applied to Plant Control system. In addition, the series of quantification frameworks exhibit some good characteristics in the view of software quality factor. More than any thing else, it is believed that introduced framework may be applicable to regulatory guide, software approval procedures, due to its soundness and simple characteristics.

关键词： Computer software

来源：评论

学校读者我要写书评

暂无评论

Measurement of Transverse Single-Spin Asymmetries for Midrapidity Production of Neutral Pions and Charged Hadrons in Polarized p+p Collisions at s=200 GeV

引用

Physical review Letters 2005年第20期95卷 202001-202001页

作者： 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. Brookhaven National Laboratory Upton New York 11973-5000 USA Joint Institute for Nuclear Research 141980 Dubna Moscow Region Russia Chemistry Department Stony Brook University SUNY Stony Brook New York 11794-3400 USA KEK High Energy Accelerator Research Organization Tsukuba Ibaraki 305-0801 Japan RIKEN The Institute of Physical and Chemical Research Wako Saitama 351-0198 Japan Florida State University Tallahassee Florida 32306 USA SUBATECH (Ecole des Mines de Nantes CNRS-IN2P3 Université de Nantes) BP 20722-44307 Nantes France Department of Physics and Astronomy Stony Brook University SUNY Stony Brook New York 11794 USA Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA IHEP Protvino State Research Center of Russian Federation Institute for High Energy Physics Protvino 142281 Russia Dapnia CEA Saclay F-91191 Gif-sur-Yvette France University of California—Riverside Riverside California 92521 USA Los Alamos National Laboratory Los Alamos New Mexico 87545 USA University of New Mexico Albuquerque New Mexico 87131 USA Institut für Kernphysik University of Muenster D-48149 Muenster Germany Columbia University New York New York 10027 USA and Nevis Laboratories Irvington New York 10533 USA PNPI Petersburg Nuclear Physics Institute Gatchina Russia RIKEN BNL Research Center Brookhaven National Laboratory Upton New York 11973-5000 USA Iowa State University Ames Iowa 50011 USA Saint Petersburg State Polytechnic University St. Petersburg Russia Laboratoire Leprince-Ringuet Ecole Polytechnique CNRS-IN2P3 Route de Saclay F-91128 Palaiseau France New Mexico State University Las Cruces New Mexico 88003 USA Lawrence Livermore National Laboratory Livermore California 94550 USA KAERI Cyclotron Application Laboratory Seoul South Korea Bhabha Atomic Research Centre Bombay 400 085 India Institute of Physics Academia Sinica Taipei 11529 Taiwan Yonsei University IPAP Seoul 120-749 Korea Kangnung National University Kangnung 210-702 So

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 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 0.5resented and compared to next-to-leading order perturbative QCd (pQCd) calculations. Successful description of the unpolarized cross section above ∼2 GeV/c suggests that pQCd is applicable in the interpretation of the asymmetry results in the relevant kinematic range.

关键词： High energy physics

来源：评论

学校读者我要写书评

暂无评论

systematic studies of the centrality and sNN dependence of the dET/dη and dNch/dη in heavy ion collisions at midrapidity

引用

Physical review C 2005年第3期71卷 034908-034908页

作者： 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. G. d'Enterria G. david H. delagrange A. denisov A. deshpande E. J. desmond 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 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. Ma Brookhaven National Laboratory Upton New York 11973-5000 USA Joint Institute for Nuclear Research 141980 Dubna Moscow Region Russia Chemistry Department SUNY at Stony Brook Stony Brook New York 11794-3400 USA KEK High Energy Accelerator Research Organization Tsukuba-shi Ibaraki-ken 305-0801 Japan Institute of Physical and Chemical Research (RIKEN) Wako Saitama 351-0198 Japan Florida State University Tallahassee Florida 32306 USA SUBATECH Ecole des Mines de Nantes Centre National de la Recherche Scientifique-IN2P3 Université de Nantes BP 20722-44307 Nantes France Department of Physics and Astronomy SUNY at Stony Brook Stony Brook New York 11794 USA Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA Institute for High Energy Physics (IHEP) Protvino Russia Dapnia Commissariat à l'Energie Atomique Saclay F-91191 Gif-sur-Yvette France University of California–Riverside Riverside California 92521 USA Los Alamos National Laboratory Los Alamos New Mexico 87545 USA University of New Mexico Albuquerque New Mexico 87131 USA Institut für Kernphysik University of Muenster D-48149 Muenster Germany Columbia University New York New York 10027 and Nevis Laboratories Irvington New York 10533 USA Petersburg Nuclear Physics Institute (PNPI) Gatchina Russia RIKEN BNL Research Center Brookhaven National Laboratory Upton New York 11973-5000 USA Iowa State University Ames Iowa 50011 USA St. Petersburg State Technical University St. Petersburg Russia Laboratoire Leprince-Ringuet Ecole Polytechnique Centre National de la Recherche Scientifique IN2P3 Route de Saclay F-91128 Palaiseau France New Mexico State University Las Cruces New Mexico 88003 USA Lawrence Livermore National Laboratory Livermore California 94550 USA KAERI Cyclotron Application Laboratory Seoul Korea Bhabha Atomic Research Centre Bombay 400 085 India Institute of Physics Academia Sinica Taipei 11529 Taiwan Yonsei University IPAP Seoul 120-749 Korea Kangnung National University

The PHENIX experiment at the relativistic heavy ion collider (rHIC) has measured transverse energy and charged particle multiplicity at midrapidity in Au+Au collisions at center-of-mass energies sNN=19.6,130, and 200GeV as a function of centrality. The presented results are compared to measurements from other rHIC experiments and experiments at lower energies. The sNN dependence of dET/dη and dNch/dη per pair of participants is consistent with logarithmic scaling for the most central events. The centrality dependence of dET/dη and dNch/dη 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 sNN. A survey of comparisons between the data and available theoretical models is also presented.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Centrality dependence of Charm Production from a Measurement of Single Electrons in Au+Au Collisions at sNN=200 GeV

引用

Physical review Letters 2005年第8期94卷 082301-082301页

作者： 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. G. 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. Mal Brookhaven National Laboratory Upton New York 11973-5000 USA Joint Institute for Nuclear Research 141980 Dubna Moscow Region Russia Chemistry Department Stony Brook University SUNY Stony Brook New York 11794-3400 USA KEK High Energy Accelerator Research Organization Tsukuba-shi Ibaraki-ken 305-0801 Japan RIKEN (The Institute of Physical and Chemical Research) Wako Saitama 351-0198 Japan Florida State University Tallahassee Florida 32306 USA SUBATECH (Ecole des Mines de Nantes CNRS-IN2P3 Université de Nantes) BP 20722-44307 Nantes France Department of Physics and Astronomy Stony Brook University SUNY Stony Brook New York 11794 USA Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA Institute for High Energy Physics (IHEP) Protvino Russia Dapnia CEA Saclay F-91191 Gif-sur-Yvette France University of California at Riverside Riverside California 92521 USA Los Alamos National Laboratory Los Alamos New Mexico 87545 USA University of New Mexico Albuquerque New Mexico 87131 USA Institut für Kernphysik University of Muenster D-48149 Muenster Germany Columbia University New York New York 10027 USA and Nevis Laboratories Irvington New York 10533 USA PNPI Petersburg Nuclear Physics Institute Gatchina Russia RIKEN BNL Research Center Brookhaven National Laboratory Upton New York 11973-5000 USA Iowa State University Ames Iowa 50011 USA St. Petersburg State Technical University St. Petersburg Russia Laboratoire Leprince-Ringuet Ecole Polytechnique CNRS-IN2P3 Route de Saclay F-91128 Palaiseau France New Mexico State University Las Cruces New Mexico 88003 USA Lawrence Livermore National Laboratory Livermore California 94550 USA KAERI Cyclotron Application Laboratory Seoul Korea Bhabha Atomic Research Centre Bombay 400 085 India Institute of Physics Academia Sinica Taipei 11529 Taiwan Yonsei University IPAP Seoul 120-749 Korea Kangnung National University Kangnung 210-702 Korea Universidade de São Paulo Instituto de Física Caixa

The PHENIX experiment has measured midrapidity transverse momentum spectra (0.4<pT<4.0 GeV/c) of single electrons as a function of centrality in Au+Au collisions at sNN=200 GeV. Contributions from photon conve... 详细信息

The PHENIX experiment has measured midrapidity transverse momentum spectra (0.4rons as a function of centrality in Au+Au collisions at sNN=200 GeV. Contributions from photon conversions and dalitz decays of light neutral mesons are measured by introducing a thin (1.7% X0) converter into the PHENIX acceptance and are statistically removed. The subtracted nonphotonic electron spectra are primarily due to the semileptonic decays of hadrons containing heavy quarks, mainly charm at lower pT. For all centralities, the charm production cross section is found to scale with the nuclear overlap function, TAA. For minimum-bias collisions the charm cross section per binary collision is Ncc¯/TAA=622±57(stat)±160(syst) μb.

关键词： Electrons

来源：评论

学校读者我要写书评

暂无评论

Centrality dependence of direct Photon Production in SNN=200 GeV Au+Au Collisions

引用

Physical review Letters 2005年第23期94卷 232301-232301页

作者： 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. Malakh Brookhaven National Laboratory Upton New York 11973-5000 USA Joint Institute for Nuclear Research 141980 Dubna Moscow Region Russia Chemistry Department Stony Brook University SUNY Stony Brook New York 11794-3400 USA KEK High Energy Accelerator Research Organization Tsukuba-shi Ibaraki-ken 305-0801 Japan RIKEN (The Institute of Physical and Chemical Research) Wako Saitama 351-0198 Japan Florida State University Tallahassee Florida 32306 USA SUBATECH (Ecole des Mines de Nantes CNRS-IN2P3 Université de Nantes) BP 20722-44307 Nantes France Department of Physics and Astronomy Stony Brook University SUNY Stony Brook New York 11794 USA Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA Institute for High Energy Physics (IHEP) Protvino Russia Dapnia CEA Saclay F-91191 Gif-sur-Yvette France University of California–Riverside Riverside California 92521 USA Los Alamos National Laboratory Los Alamos New Mexico 87545 USA University of New Mexico Albuquerque New Mexico 87131 USA Institut für Kernphysik University of Muenster D-48149 Muenster Germany Columbia University New York New York 10027 USA and Nevis Laboratories Irvington New York 10533 USA PNPI Petersburg Nuclear Physics Institute Gatchina Russia RIKEN BNL Research Center Brookhaven National Laboratory Upton New York 11973-5000 USA Iowa State University Ames Iowa 50011 USA St. Petersburg State Technical University St. Petersburg Russia Laboratoire Leprince-Ringuet Ecole Polytechnique CNRS-IN2P3 Route de Saclay F-91128 Palaiseau France New Mexico State University Las Cruces New Mexico 88003 USA Lawrence Livermore National Laboratory Livermore California 94550 USA KAERI Cyclotron Application Laboratory Seoul South Korea Bhabha Atomic Research Centre Bombay 400 085 India Institute of Physics Academia Sinica Taipei 11529 Taiwan Yonsei University IPAP Seoul 120-749 Korea Kangnung National University Kangnung 210-702 South Korea Universidade de São Paulo Instituto de Físi

The first measurement of direct photons in Au+Au collisions at sNN=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.

关键词： Photons

来源：评论

学校读者我要写书评

暂无评论

deuteron and Antideuteron Production in Au+Au Collisions at sNN=200 GeV

引用

Physical review Letters 2005年第12期94卷 122302-122302页

作者： 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. Malakh Brookhaven National Laboratory Upton New York 11973-5000 USA Joint Institute for Nuclear Research 141980 Dubna Moscow Region Russia Chemistry Department Stony Brook University SUNY Stony Brook New York 11794-3400 USA KEK High Energy Accelerator Research Organization Tsukuba-shi Ibaraki-ken 305-0801 Japan RIKEN (The Institute of Physical and Chemical Research) Wako Saitama 351-0198 Japan Florida State University Tallahassee Florida 32306 USA SUBATECH (Ecole des Mines de Nantes CNRS-IN2P3 Université de Nantes) BP 20722-44307 Nantes France Department of Physics and Astronomy Stony Brook University SUNY Stony Brook New York 11794 USA Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA Institute for High Energy Physics (IHEP) Protvino Russia Dapnia CEA Saclay F-91191 Gif-sur-Yvette France University of California at Riverside Riverside California 92521 USA Los Alamos National Laboratory Los Alamos New Mexico 87545 USA University of New Mexico Albuquerque New Mexico 87131 USA Institut für Kernphysik University of Muenster D-48149 Muenster Germany Columbia University New York New York 10027 USA and Nevis Laboratories Irvington New York 10533 USA PNPI Petersburg Nuclear Physics Institute Gatchina Russia RIKEN BNL Research Center Brookhaven National Laboratory Upton New York 11973-5000 USA Iowa State University Ames Iowa 50011 USA St. Petersburg State Technical University St. Petersburg Russia Laboratoire Leprince-Ringuet Ecole Polytechnique CNRS-IN2P3 Route de Saclay F-91128 Palaiseau France New Mexico State University Las Cruces New Mexico 88003 USA Lawrence Livermore National Laboratory Livermore California 94550 USA KAERI Cyclotron Application Laboratory Seoul Korea Bhabha Atomic Research Centre Bombay 400085 India Institute of Physics Academia Sinica Taipei 11529 Taiwan Yonsei University IPAP Seoul 120-749 Korea Kangnung National University Kangnung 210-702 Korea Universidade de São Paulo Instituto de Física Caix

The production of deuterons and antideuterons in the transverse momentum range 1.1<pT<4.3 GeV/c at midrapidity in Au+Au collisions at sNN=200 GeV has been studied by the PHENIX experiment at rHIC. A coalescenc... 详细信息

The production of deuterons and antideuterons in the transverse momentum range 1.1drapidity in Au+Au collisions at sNN=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 pT, which is consistent with an expanding collision zone. Comparing (anti)proton yields, p¯/p=0.73±0.01, with (anti)deuteron yields, d¯/d=0.47±0.03, we estimate that n¯/n=0.64±0.04. The nucleon phase space density is estimated from the coalescence measurement.

关键词： Elementary particles

来源：评论

学校读者我要写书评

暂无评论

Nuclear Modification Factors for Hadrons at Forward and Backward rapidities in deuteron-Gold Collisions at sNN=200 GeV

引用

Physical review Letters 2005年第8期94卷 082302-082302页

作者： S. S. Adler S. Afanasiev C. Aidala N. N. Ajitanand Y. Akiba A. Al-Jamel J. Alexander K. Aoki L. Aphecetche r. Armendariz S. H. Aronson r. Averbeck T. C. Awes V. Babintsev A. Baldisseri K. N. Barish P. d. Barnes B. Bassalleck S. Bathe S. Batsouli V. Baublis F. Bauer A. Bazilevsky S. Belikov M. T. Bjorndal J. G. Boissevain H. Borel M. L. Brooks d. S. Brown N. Bruner d. Bucher H. Buesching V. Bumazhnov G. Bunce J. M. Burward-Hoy S. Butsyk X. Camard P. Chand W. C. Chang S. Chernichenko C. Y. Chi J. Chiba M. Chiu I. J. Choi r. K. Choudhury T. Chujo V. Cianciolo Y. Cobigo B. A. Cole M. P. Comets P. Constantin M. Csanád T. Csörgő J. P. Cussonneau d. d'Enterria K. das G. david F. deák H. delagrange A. denisov A. deshpande E. J. desmond A. devismes O. dietzsch J. L. drachenberg O. drapier A. drees A. durum d. dutta V. dzhordzhadze Y. V. Efremenko H. En'yo B. Espagnon S. Esumi d. E. Fields C. Finck F. Fleuret S. L. Fokin B. d. Fox Z. Fraenkel J. E. Frantz A. Franz A. d. Frawley Y. Fukao S.-Y. Fung S. Gadrat M. Germain A. Glenn M. Gonin J. Gosset Y. Goto r. Granier de Cassagnac N. Grau S. V. Greene M. Grosse Perdekamp H.-Å. Gustafsson T. Hachiya J. S. Haggerty H. Hamagaki A. G. Hansen E. P. Hartouni M. Harvey K. Hasuko r. Hayano X. He M. Heffner T. K. Hemmick J. M. Heuser P. Hidas H. Hiejima J. C. Hill r. Hobbs W. Holzmann K. Homma B. Hong A. Hoover T. Horaguchi T. Ichihara V. V. Ikonnikov K. Imai M. Inaba M. Inuzuka d. Isenhower L. Isenhower M. Ishihara M. Issah A. Isupov B. V. Jacak J. Jia O. Jinnouchi B. M. Johnson S. C. Johnson K. S. Joo d. Jouan F. Kajihara S. Kametani N. Kamihara M. Kaneta J. H. Kang K. Katou T. Kawabata A. Kazantsev S. Kelly B. Khachaturov A. Khanzadeev J. Kikuchi d. J. Kim E. Kim G.-B. Kim H. J. Kim E. Kinney A. Kiss E. Kistenev A. Kiyomichi C. Klein-Boesing H. Kobayashi L. Kochenda V. Kochetkov r. Kohara B. Komkov M. Konno d. Kotchetkov A. Kozlov P. J. Kroon C. H. Kuberg G. J. Kunde K. Kurita M. J. Kweon Y. Kwon G. S. Kyle r. Lacey J. G. Lajoie Y. Le Bornec A. Lebedev S. Leckey d. M. Lee M. J. Leit Brookhaven National Laboratory Upton New York 11973-5000 USA Joint Institute for Nuclear Research 141980 Dubna Moscow Region Russia Columbia University New York New York 10027 USA and Nevis Laboratories Irvington New York 10533 USA Chemistry Department Stony Brook University SUNY Stony Brook New York 11794-3400 USA KEK High Energy Accelerator Research Organization Tsukuba-shi Ibaraki-ken 305-0801 Japan RIKEN (The Institute of Physical and Chemical Research) Wako Saitama 351-0198 Japan New Mexico State University Las Cruces New Mexico 88003 USA Kyoto University Kyoto 606 Japan SUBATECH (Ecole des Mines de Nantes CNRS-IN2P3 Université de Nantes) BP 20722-44307 Nantes France Department of Physics and Astronomy Stony Brook University SUNY Stony Brook New York 11794 USA Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA Institute for High Energy Physics (IHEP) Protvino Russia Dapnia CEA Saclay F-91191 Gif-sur-Yvette France University of California–Riverside Riverside California 92521 USA Los Alamos National Laboratory Los Alamos New Mexico 87545 USA University of New Mexico Albuquerque New Mexico 87131 USA Institut für Kernphysik University of Muenster D-48149 Muenster Germany PNPI Petersburg Nuclear Physics Institute Gatchina Russia RIKEN BNL Research Center Brookhaven National Laboratory Upton New York 11973-5000 USA Iowa State University Ames Iowa 50011 USA Lawrence Livermore National Laboratory Livermore California 94550 USA Bhabha Atomic Research Centre Bombay 400 085 India Institute of Physics Academia Sinica Taipei 11529 Taiwan Yonsei University IPAP Seoul 120-749 Korea IPN-Orsay Universite Paris Sud CNRS-IN2P3 BP1 F-91406 Orsay France ELTE Eötvös Loránd University H-1117 Budapest Pázmány P. s. 1/A Hungary KFKI Research Institute for Particle and Nuclear Physics (RMKI) H-1525 Budapest 114 PO Box 49 Hungary Florida State University Tallahassee Florida 32306 USA Universidade de São Paulo Instituto de Física

We report on charged hadron production in deuteron-gold reactions at sNN=200 GeV. Our measurements in the deuteron direction cover 1.4<η<2.2, referred to as forward rapidity, and in the gold direction −2.0<η<−1.4, referred to as backward rapidity, and a transverse momentum range pT=0.5–4.0 GeV/c. We compare the relative yields for different deuteron-gold collision centrality classes. We observe a suppression relative to binary collision scaling at forward rapidity, sensitive to low momentum fraction (x) partons in the gold nucleus, and an enhancement at backward rapidity, sensitive to high momentum fraction partons in the gold nucleus.

关键词： Gold

来源：评论

学校读者我要写书评

暂无评论

Saturation of Azimuthal Anisotropy in Au+Au Collisions at sNN=62–200 GeV

引用

Physical review Letters 2005年第23期94卷 232302-232302页

作者： S. S. Adler S. Afanasiev C. Aidala N. N. Ajitanand Y. Akiba A. Al-Jamel J. Alexander r. Amirikas K. Aoki L. Aphecetche r. Armendariz S. H. Aronson r. Averbeck T. C. Awes B. Azmoun 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 r. Bennett Y. Berdnikov S. Bhagavatula M. T. Bjorndal J. G. Boissevain H. Borel S. Borenstein K. Boyle M. L. Brooks d. S. Brown N. Bruner d. Bucher H. Buesching V. Bumazhnov G. Bunce J. M. Burward-Hoy S. Butsyk X. Camard S. Campbell 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 C. r. Cleven Y. Cobigo B. A. Cole M. P. Comets P. Constantin M. Csanád T. Csörgő d. d’Enterria T. dahms K. das G. david H. delagrange A. denisov A. deshpande E. J. desmond A. devismes O. dietzsch A. dion J. L. drachenberg O. drapier A. drees K. A. drees A. K. dubey r. du rietz A. durum d. dutta V. dzhordzhadze Y. V. Efremenko J. Egdemir K. El Chenawi A. Enokizono H. En’yo B. Espagnon S. Esumi L. Ewell d. E. Fields F. Fleuret S. L. Fokin B. Forestier B. d. Fox Z. Fraenkel J. E. Frantz A. Franz A. d. Frawley Y. Fukao S.-Y. Fung S. Gadrat S. Garpman F. Gastineau M. Germain 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 T. Gunji W. Guryn H.-Å. Gustafsson T. Hachiya A. Hadj Henni J. S. Haggerty M. N. Hagiwara H. Hamagaki A. G. Hansen H. Harada E. P. Hartouni K. Haruna M. Harvey E. Haslum K. Hasuko r. Hayano N. Hayashi X. He M. Heffner T. K. Hemmick J. M. Heuser M. Hibino H. Hiejima J. C. Hill r. Hobbs M. Holmes W. Holzmann K. Homma B. Hong A. Hoover T. Horaguchi H. M. Hur T. Ichihara V. V. Ikonnikov K. Imai M. Inaba d. Isenhower L. Isenhower M. Ishihara T. Isobe M. Issah A. Isupov B. V. Jacak W. Y. Jang Y. Jeong J. Jia J. Jin O. Jinnouchi B. M. Johnson S. C. Johnson K. S. Joo d. Jouan F. Kajihara S. Kametani N. Kamihara M. Kaneta J. H. Kang S. S. Kapoor K. Katou T Brookhaven National Laboratory Upton New York 11973-5000 USA Joint Institute for Nuclear Research 141980 Dubna Moscow Region Russia Columbia University New York New York 10027 USA and Nevis Laboratories Irvington New York 10533 USA Chemistry Department Stony Brook University Stony Brook SUNY New York 11794-3400 USA KEK High Energy Accelerator Research Organization Tsukuba-shi Ibaraki-ken 305-0801 Japan RIKEN (The Institute of Physical and Chemical Research) Wako Saitama 351-0198 Japan RIKEN BNL Research Center Brookhaven National Laboratory Upton New York 11973-5000 USA New Mexico State University Las Cruces New Mexico 88003 USA Florida State University Tallahassee Florida 32306 USA Kyoto University Kyoto 606-8502 Japan SUBATECH (Ecole des Mines de Nantes CNRS-IN2P3 Université de Nantes) BP 20722 - 44307 Nantes France Department of Physics and Astronomy Stony Brook University SUNY Stony Brook New York 11794 USA Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA Institute for High Energy Physics (IHEP) Protvino Russia Dapnia CEA Saclay F-91191 Gif-sur-Yvette France University of California - Riverside Riverside California 92521 USA Los Alamos National Laboratory Los Alamos New Mexico 87545 USA University of New Mexico Albuquerque New Mexico 87131 USA Institut für Kernphysik University of Muenster D-48149 Muenster Germany PNPI Petersburg Nuclear Physics Institute Gatchina Russia Iowa State University Ames Iowa 50011 USA St. Petersburg State Technical University St. Petersburg Russia Laboratoire Leprince-Ringuet Ecole Polytechnique CNRS-IN2P3 Route de Saclay F-91128 Palaiseau France Lawrence Livermore National Laboratory Livermore California 94550 USA KAERI Cyclotron Application Laboratory Seoul South Korea Bhabha Atomic Research Centre Bombay 400 085 India Institute of Physics Academia Sinica Taipei 11529 Taiwan Yonsei University IPAP Seoul 120-749 Korea Kangnung National University Kangnung 210-702 Korea Vander

New measurements are presented for charged hadron azimuthal correlations at midrapidity in Au+Au collisions at sNN=62.4 and 200 GeV. They are compared to earlier measurements obtained at sNN=130 GeV and in Pb+Pb collisions at sNN=17.2 GeV. Sizeable anisotropies are observed with centrality and transverse momentum (pT) dependence characteristic of elliptic flow (v2). For a broad range of centralities, the observed magnitudes and trends of the differential anisotropy, v2(pT), change very little over the collision energy range sNN=62–200 GeV, indicating saturation of the excitation function for v2 at these energies. Such a saturation may be indicative of the dominance of a very soft equation of state for sNN∼60–200 GeV.

关键词： Gold

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：