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Suppressed π0 Production at Large Transverse Momentum in Central Au+Au Collisions at sNN=200 GeV

physical Review Letters 2003年第7期91卷 072301-072301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 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 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 L. 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. 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 fuer 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 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 Física

Transverse momentum spectra of neutral pions in the range 1<pT<10 GeV/c have been measured at midrapidity by the PHENIX experiment at BNL RHIC in Au+Au collisions at sNN=200 GeV. The π0 multiplicity in centra... 详细信息

Transverse momentum spectra of neutral pions in the range 1

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Elliptic Flow of Identified Hadrons in Au+Au Collisions at sNN=200 GeV

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physical Review Letters 2003年第18期91卷 182301-182301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 L. 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. 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 Bâtiment 703 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 NY 10027 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

The anisotropy parameter (v2), the second harmonic of the azimuthal particle distribution, has been measured with the PHENIX detector in Au+Au collisions at sNN=200 GeV for identified and inclusive charged particle production at central rapidities (|η|<0.35) with respect to the reaction plane defined at high rapidities (|η|=3–4 ). We observe that the v2 of mesons falls below that of (anti)baryons for pT>2 GeV/c, in marked contrast to the predictions of a hydrodynamical model. A quark-coalescence model is also investigated.

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Scaling Properties of Proton and Antiproton Production in sNN=200 GeV Au+Au Collisions

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physical Review Letters 2003年第17期91卷 172301-172301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 G. 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 L. 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. 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 Autonomy 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 fuer 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 40 085 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 Físic

We report on the yield of protons and antiprotons, as a function of centrality and transverse momentum, in Au+Au collisions at sNN=200 GeV measured at midrapidity by the PHENIX experiment at the BNL Relativistic Hea... 详细信息

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Absence of Suppression in Particle Production at Large Transverse Momentum in sNN=200 GeV d+Au Collisions

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physical Review Letters 2003年第7期91卷 072303-072303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. Inuzuka D. Isenhower L. Isenhower 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 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. Leitch M. A. L. Leite X. Li X. H. Li 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 USA Institut fuer 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 P.O. Box 49 Hungary Florida State University Tallahassee Florida 32306 USA Universidade de São Paulo Instituto de Física Ca

Transverse momentum spectra of charged hadrons with pT<8 GeV/c and neutral pions with pT<10 GeV/c have been measured at midrapidity by the PHENIX experiment at BNL RHIC in d+Au collisions at sNN=200 GeV. The measured yields are compared to those in p+p collisions at the same sNN scaled up by the number of underlying nucleon-nucleon collisions in d+Au. The yield ratio does not show the suppression observed in central Au+Au collisions at RHIC. Instead, there is a small enhancement in the yield of high momentum particles.

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The time stability of integrated sensors as the most important condition for their use in aviation microprocessor systems

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MEASUREMENT TECHNIQUES 2002年第10期45卷 1035-1038页

作者： Sokolov, LV Shkol'nikov, VM Department of Physics National University of Ireland Galway Ireland Division of Atmospheric Sciences Department of Physical Sciences University of Helsinki Helsinki FIN-00014 P.O. Box 64 Finland Departments of Environmental Science and Engineering and Chemical Engineering California Institute of Technology Pasadena United States Finnish Institute for Occupational Health FIN-00250 Helsinki Topeliuksenkatu 41a Finland Helsinki Polytechnic Technology PL 4020 FIN-00099 Helsinki Finland Institute of Spectrochemistry and Applied Spectroscopy 44139 Dortmund Germany

The main structural and technological methods which enable the technical level of sensors to be improved are classified by analyzing publications on the technical parameters of modern integrated pressure sensors and m... 详细信息

关键词： integrated pressure sensors time stability avionics

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Entropy production of diffusion in spatially periodic deterministic systems

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physical Review E 2002年第2期66卷 026110-026110页

作者： J. R. Dorfman P. Gaspard T. Gilbert Department of Physics and Institute for Physical Science and Technology University of Maryland College Park Maryland 20742 Center for Nonlinear Phenomena and Complex Systems Université Libre de Bruxelles Code Postal 231 Campus Plaine B-1050 Brussels Belgium Department of Chemical Physics The Weizmann Institute of Science Rehovot 76100 Israel

This paper presents an ab initio derivation of the expression given by irreversible thermodynamics for the rate of entropy production for different classes of diffusive processes. The first class is Lorentz gases, where noninteracting particles move on a spatially periodic lattice, and collide elastically with fixed scatterers. The second class is periodic systems, where N particles interact with each other, and one of them is a tracer particle that diffuses among the cells of the lattice. We assume that, in either case, the dynamics of the system are deterministic and hyperbolic, with positive Lyapunov exponents. This work extends methods originally developed for a chaotic two-dimensional model of diffusion, the multi-baker map, to higher-dimensional, continuous-time dynamical systems appropriate for systems with one or more moving particles. Here we express the rate of entropy production in terms of hydrodynamic measures that are determined by the fractal properties of microscopic hydrodynamic modes that describe the slowest decay of the system to an equilibrium state.

关键词： .periodic systems derivation tracer Gibbs entropy production hydrodynamic modes positive Lyapunov rate of entropy spatially periodic Lorentz gases multi-baker hydrodynamic measures

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Theoretical prediction of three‐body cluster resonances in 11Li and 10He

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AIP Conference Proceedings 2002年第1期644卷 49-55页

作者： S. Aoyama T. Myo K. Katō K. Ikeda *Information Processing Center Kitami Institute of Technology Kitami 090‐8507 Japan †Division of Physics Graduate School of Science Hokkaido University Sapporo 060‐0810 Japan **The Institute of Physical and Chemical Research (RIKEN) Wako 351‐0198 Japan

With the core+n+n three‐body cluster model, we investigated 11Li and 10He. By using a 9Li‐n interaction which reproduce the degeneracy of single particle s1/2‐ and p1/2‐orbital states above the 9Li+n threshold, a low‐lying excited resonance is predicted in 11Li together with the ground state, and they are found to be partners in mixed configurations of (0p1/2)2 and (1s1/2)2. The observed three‐body resonance in 10He is considered to be the two valence neutrons mainly in the p‐orbit, (0p1/2)2. In addition to a solution of the two valence neutrons in the p‐orbit, we obtained a solution of the two valence neutrons mainly in the s‐orbit, (1s1/2)2, as the ground state. Experimentally, such a state has not yet been observed. This newly predicted state of 10He with the main component of (1s1/2)2 would corresponds to the ground state of 11Li with a halo structure.

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Possible Hadronic Molecule Λ(1405) and Thermal Glueballs in SU(3) Lattice QCD

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AIP Conference Proceedings 2002年第1期644卷 366-371页

作者： H. Suganuma N. Ishii H. Matsufuru Y. Nemoto T. T. Takahashi *Faculty of Science Tokyo Institute of Technology Tokyo 152‐8552 Japan †The Institute of Physical and Chemical Research (RIKEN) Wako 351‐0198 Japan **Yukawa Institute for Theoretical Physics Kyoto University Kyoto 606‐8502 Japan ‡Brookhaven National Laboratory RBRC New York 11973‐5000 §RCNP Osaka University Mihogaoka 10‐1 Osaka 567‐0047 Japan

We aim to construct quark hadron physics based on QCD. First, using lattice QCD, we study mass spectra of positive‐parity and negative‐parity baryons in the octet, the decuplet and the singlet representations of the SU(3) flavor. In particular, we consider the lightest negative‐parity baryon, the Λ(1405), which can be an exotic hadron as the NK̄ molecular state or the flavor‐singlet three‐quark state. We investigate the negative‐parity flavor‐singlet three‐quark state in lattice QCD using the quenched approximation, where the dynamical quark‐anitiquark pair creation is absent and no mixing occurs between the three‐quark and the five‐quark states. Our lattice QCD analysis suggests that the flavor‐singlet three‐quark state is so heavy that the Λ(1405) cannot be identified as the three‐quark state, which supports the possibility of the molecular‐state picture of the Λ(1405). Second, we study thermal properties of the scalar glueball in an anisotropic lattice QCD, and find about 300 MeV mass reduction near the QCD critical temperature from the pole‐mass analysis. Finally, we study the three‐quark potential, which is responsible to the baryon properties. The detailed lattice QCD analysis for the 3Q potential indicates the Y‐type flux‐tube formation linking the three quarks.

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Interpretation of Lorentz microscopy observations of vortices in high-temperature superconductors with columnar defects

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physical Review B 2002年第17期66卷 174518-174518页

作者： M. Beleggia G. Pozzi J. Masuko N. Osakabe K. Harada T. Yoshida O. Kamimura H. Kasai T. Matsuda A. Tonomura Department of Physics and Istituto Nazionale per la Fisica della Materia University of Bologna Viale B. Pichat 6/2 40127 Bologna Italy Department of Physics Tokyo Institute of Technology Ohokayama Meguro-ku Tokyo 152-8551 Japan Advanced Research Laboratory Hitachi Ltd. Hatoyama Saitama 350-0395 Japan Frontier Research System The Institute of Physical and Chemical Research (RIKEN) Wako Saitama 351-0198 Japan SORST Japan Science and Technology Corporation (JST) 3-4-15 Nihonbashi Chuo-ku Tokyo 103-0027 Japan

In order to interpret recent experimental observations of superconducting vortices interacting with tilted columnar defects in high-temperature superconducting materials, we have extended to the case of anisotropic materials our Fourier space approach for the calculation of the electron optical phase shift experienced by the high-energy electrons in a transmission electron microscope. The case of a London vortex having its core not perpendicular to the specimen surfaces is considered. The same configuration is also analyzed in the framework of a simplified pancake model and the influence of the number of stacks on the phase shift and images is investigated. The results obtained by the two models are compared between them and with the experimental results. The agreement between theory and experiment confirms that anisotropy plays a major role in affecting the electron microscopy images.

关键词： .vortices Fourier space

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Net Charge Fluctuations in Au+Au Interactions at sNN=130 GeV

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physical Review Letters 2002年第8期89卷 082301-082301页

作者： K. Adcox S. S. Adler N. N. Ajitanand Y. Akiba J. Alexander L. Aphecetche Y. Arai S. H. Aronson R. Averbeck T. C. Awes K. N. Barish P. D. Barnes J. Barrette B. Bassalleck S. Bathe V. Baublis A. Bazilevsky S. Belikov F. G. Bellaiche S. T. Belyaev M. J. Bennett Y. Berdnikov S. Botelho M. L. Brooks D. S. Brown N. Bruner D. Bucher H. Buesching V. Bumazhnov G. Bunce J. Burward-Hoy S. Butsyk T. A. Carey P. Chand J. Chang W. C. Chang L. L. Chavez S. Chernichenko C. Y. Chi J. Chiba M. Chiu R. K. Choudhury T. Christ T. Chujo M. S. Chung P. Chung V. Cianciolo B. A. Cole D. G. D’Enterria G. David H. Delagrange A. Denisov A. Deshpande E. J. Desmond O. Dietzsch B. V. Dinesh A. Drees A. Durum D. Dutta K. Ebisu Y. V. Efremenko K. El Chenawi H. En’yo S. Esumi L. Ewell T. Ferdousi D. E. Fields S. L. Fokin Z. Fraenkel A. Franz A. D. Frawley S.-Y. Fung S. Garpman T. K. Ghosh A. Glenn A. L. Godoi Y. Goto S. V. Greene M. Grosse Perdekamp S. K. Gupta W. Guryn H.-Å Gustafsson J. S. Haggerty H. Hamagaki A. G. Hansen H. Hara E. P. Hartouni R. Hayano N. Hayashi X. He T. K. Hemmick J. M. Heuser M. Hibino J. C. Hill D. S. Ho K. Homma B. Hong A. Hoover T. Ichihara K. Imai M. S. Ippolitov M. Ishihara B. V. Jacak W. Y. Jang J. Jia B. M. Johnson S. C. Johnson K. S. Joo S. Kametani J. H. Kang M. Kann S. S. Kapoor S. Kelly B. Khachaturov A. Khanzadeev J. Kikuchi D. J. Kim H. J. Kim S. Y. Kim Y. G. Kim W. W. Kinnison E. Kistenev A. Kiyomichi C. Klein-Boesing S. Klinksiek L. Kochenda V. Kochetkov D. Koehler T. Kohama D. Kotchetkov A. Kozlov P. J. Kroon K. Kurita M. J. Kweon Y. Kwon G. S. Kyle R. Lacey J. G. Lajoie J. Lauret A. Lebedev D. M. Lee M. J. Leitch X. H. Li Z. Li D. J. Lim M. X. Liu X. Liu Z. Liu C. F. Maguire J. Mahon Y. I. Makdisi V. I. Manko Y. Mao S. K. Mark S. Markacs G. Martinez M. D. Marx A. Masaike F. Matathias T. Matsumoto P. L. McGaughey E. Melnikov M. Merschmeyer F. Messer M. Messer Y. Miake 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 M. Mun Vanderbilt University Nashville Tennessee 37235 Brookhaven National Laboratory Upton New York 11973-5000 Chemistry Department State University of New York–Stony Brook Stony Brook New York 11794 KEK High Energy Accelerator Research Organization Tsukuba-shi Ibaraki-ken 305-0801 Japan SUBATECH (Ecole des Mines de Nantes IN2P3/CNRS Universite de Nantes) BP 20722-44307 Nantes-cedex 3 France Department of Physics and Astronomy State University of New York–Stony Brook Stony Brook New York 11794 Oak Ridge National Laboratory Oak Ridge Tennessee 37831 University of California–Riverside Riverside California 92521 Los Alamos National Laboratory Los Alamos New Mexico 87545 McGill University Montreal Quebec H3A 2T8 Canada University of New Mexico Albuquerque New Mexico 87131 Institut für Kernphysik University of Münster D-48149 Münster Germany PNPI Petersburg Nuclear Physics Institute Gatchina Russia Institute for High Energy Physics (IHEP) Protvino Russia RIKEN BNL Research Center Brookhaven National Laboratory Upton New York 11973-5000 Iowa State University Ames Iowa 50011 Russian Research Center “Kurchatov Institute ” Moscow Russia St. Petersburg State Technical University St. Petersburg Russia Universidade de São Paulo Instituto de Física Caixa Postal 66318 São Paulo CEP05315-970 Brazil New Mexico State University Las Cruces New Mexico 88003 Bhabha Atomic Research Centre Bombay 400 085 India Institute of Physics Academia Sinica Taipei 11529 Taiwan Columbia University New York New York 10027 and Nevis Laboratories Irvington New York 10533 Institute of Physics University of Tsukuba Tsukuba Ibaraki 305 Japan Korea University Seoul 136-701 Korea Nagasaki Institute of Applied Science Nagasaki-shi Nagasaki 851-0193 Japan Kyoto University Kyoto 606 Japan RIKEN (The Institute of Physical and Chemical Research) Wako Saitama 351-0198 Japan Weizmann Institute Rehovot 76100 Israel Florida State University Tallahassee Florida 32306 Department of Physics Lund

Data from Au+ Au interactions at sNN=130 GeV, obtained with the PHENIX detector at the Relativistic Heavy-Ion Collider, are used to investigate local net charge fluctuations among particles produced near midrapidity. According to recent suggestions, such fluctuations may carry information from the quark-gluon plasma. This analysis shows that the fluctuations are dominated by a stochastic distribution of particles, but are also sensitive to other effects, like global charge conservation and resonance decays.

关键词： Nuclear physics

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