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

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 1.1

关键词： Elementary particles

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

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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

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Production of ϕ mesons at midrapidity in sNN=200GeVAu+Au collisions at relativistic energies

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physical Review C 2005年第1期72卷 014903-014903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) Bôite Postale 20722 F-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 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 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 Física

We present the results of ϕ meson production in the K+K− decay channel from Au+Au collisions at sNN=200GeV 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 ϕ 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 RCP for the ϕ 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.

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

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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 5.5<pT<7 G...

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Measurement of single electron event anisotropy in Au+Au collisions at sNN=200 GeV

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physical Review C 2005年第2期72卷 024901-024901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. Makd 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) Bo∧ite Postale 20722 F-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 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 PNPI Petersburg Nuclear Physics Institute Gatchina Leningrad Region 188300 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

The transverse momentum dependence of the azimuthal anisotropy parameter v2, the second harmonic of the azimuthal distribution, for electrons at midrapidity (|η|<0.35) has been measured with the PHENIX detector in Au+Au collisions at sNN=200 GeV. The measurement was made with respect to the reaction plane defined at high rapidities (|η|=3.1−3.9). From the result we have measured the v2 of electrons from heavy flavor decay after subtraction of the v2 of electrons from other sources such as photon conversions and Dalitz decay from light neutral mesons. We observe a nonzero single electron v2 with a 90% confidence level in the intermediate-pT 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.

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Jet structure of baryon excess in Au+Au collisions at sNN=200GeV

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physical Review C 2005年第5期71卷 051902(R)-051902(R)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 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 M. T. Bjorndal 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 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 K. A. Drees R. du Rietz A. Durum D. Dutta V. Dzhordzhadze Y. V. Efremenko K. El Chenawi A. Enokizono H. En'yo B. Espagnon S. Esumi L. Ewell 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 S. Garpman 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 W. Guryn H.-Å. Gustafsson T. Hachiya J. S. Haggerty H. Hamagaki A. G. Hansen E. P. Hartouni M. Harvey K. Hasuko R. Hayano N. Hayashi X. He M. Heffner T. K. Hemmick J. M. Heuser M. Hibino 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 W. Y. Jang Y. Jeong 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 S. S. Kapoor K. Katou T. Kawabata A. Kazantsev 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. Kinney W. W. Kinnison A. Kiss E. Kiste Brookhaven National Laboratory Upton New York 11973-5000 USA Joint Institute for Nuclear Research RU-141980 Dubna Moscow Region Russia Columbia University New York New York 10027 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 New Mexico State University Las Cruces New Mexico 88003 USA Florida State University Tallahassee Florida 32306 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 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 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 IPN-Orsay Universi

Two particle correlations between identified meson and baryon trigger particles with 2.5<pT<4.0GeV/c and lower pT charged hadrons have been measured at midrapidity by the PHENIX experiment at RHIC in p+p,d+Au, a...

Two particle correlations between identified meson and baryon trigger particles with 2.5

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

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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.

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Optical Probing of Spin Polarization of Electrons in Quantum Dot Edge Channels

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physical Review Letters 2004年第9期93卷 096803-096803页

作者： Shintaro Nomura Yoshinobu Aoyagi CREST Japan Science and Technology Agency and Institute of Physics University of Tsukuba Tennodai Tsukuba Ibaraki Japan The Institute of Physical and Chemical Research (RIKEN) Hirosawa Wako Saitama Japan Interdisciplinary Graduate School of Science and Engineering Tokyo Institute of Technology Nagatsuda Midori-ku Yokohama Kanagawa Japan

We propose an optical method for the investigation of the quantum dot edge channels by utilizing circularly polarized photoluminescence in the integer-quantum-Hall-effect regime. One of the advantages of our method is that the degree of the spin-polarization of the electrons in the inner- and outer- compressible liquids can be probed separately. The observed polarized photoluminescence spectra can be explained by the calculated electron spin-dependent optical transition probabilities based on the local-spin density approximation.

关键词： Semiconductor quantum dots

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Teaching undergraduates nanotechnology

Teaching undergraduates nanotechnology

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2004 MRS Spring Meeting

作者： Shapter, J.G. Hale, P. Maddox, L.M. Ford, M.J. Waclawik, E.R. SoCPES Flinders University Bedford Park Sturt Road SA 5042 Australia Physics Department La Trobe University Faculty of Science Technology and Engineering Vic. 3086 Australia Institute for Nanoscale Technology University of Technology Sydney PO Box 123 Broadway NSW 2007 Australia School of Physical and Chemical Sciences Queensland University of Technology GPO Box 2434 Brisbane 4001 Australia

ISBN: (纸本)1558997555

One of the first nanotechnology undergraduate degrees in the world was established at Flinders University in 2000. In this paper we present our experience of developing and delivering this degree in a climate where 'traditional' physical sciences are under considerable strain. We will discuss the motivation for this initiative, structure of the established course and educational issues relating to its development. © 2004 Materials Research Society.

关键词： Teaching

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Preflight calibration and performance of the Astro-E2/HXD-II anti counter as the all sky monitor

Preflight calibration and performance of the Astro-E2/HXD-II...

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IEEE Symposium on Nuclear science (NSS/MIC)

作者： M. Ohno Y. Fukazawa K. Yamaoka M. Kokubun Y. Terada J. Kotoku S. Hong M. Mon K. Makishima T. Murakami K. Nakazawa T. Takahashi M. Tashiro Department of Physical Science Hiroshima University. Japan Department of Physics Aoyama Gakuin University Japan Department of Physics University of Tokyo Japan Institute for Physical and Chemical Research Japan Institute of Physical and Chemical Research (RIKEN). Department. of Physics Tokyo Institute of Technology Japan Department. of Physics Saitama University Japan Department. of Physics Saitama University Institute of Space and Astronautic Science Japan Institute of Space and Astronautical Science Japan Aerospace Exploration Agency (ISAS/JAXA) Institute of Space and Astronautical Science Japan Aerospace Exploration Agency (ISAS/JAXA) Japan

The hard X-ray detector (HXD-II) onboard Astro-E2 consists of the main detector which has its energy range from 10 to 600 keV and the active shield detector for background reduction. This shield detector (anti detector) is designed to not only for the background reduction but also for the soft gamma-ray all sky monitor of gamma-ray bursts (GRB) and black hole binaries. The asymmetric shape and large size of BGO scintillators for the anti counter make the gamma-ray response very complicated, and thus we need the careful calibration before the launch. We then performed preflight calibrations of HXD-II in 2003-2004. For the anti detector, we measured the pulse height spectra and stopping power of the unit detector before integration by exposing it to the collimated gamma-ray. After integration of HXD-II, we measured the pulse height spectra and stopping power of the anti detector by irradiating the gamma-ray source from various directions. Furthermore, we performed the same measurement after placing the HXD-II detector on the Astro-E2 spacecraft. Taking into account these experimental results, we construct the gamma-ray response by the Geant4 Monte Carlo simulation. The response developed in this work was found to reproduce the experimental spectra and the count distributions of each unit counter with 10-20% accuracy.

关键词： Calibration Counting circuits Monitoring Radiation detectors Gamma ray detectors physics Gamma ray detection Gamma ray bursts X-ray detectors Pulse measurements

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