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K*(892)0 and ϕ(1020) meson production at high transverse momentum in pp and Pb-Pb collisions at sNN=2.76 TeV

Physical Review C 2017年第6期95卷 064606-064606页

作者： J. Adam D. Adamová M. M. Aggarwal G. Aglieri Rinella M. Agnello N. Agrawal Z. Ahammed S. Ahmad S. U. Ahn S. Aiola A. Akindinov S. N. Alam D. S. D. Albuquerque D. Aleksandrov B. Alessandro D. Alexandre R. Alfaro Molina A. Alici A. Alkin J. Alme T. Alt S. Altinpinar I. Altsybeev C. Alves Garcia Prado M. An C. Andrei H. A. Andrews A. Andronic V. Anguelov C. Anson T. Antičić F. Antinori P. Antonioli R. Anwar L. Aphecetche H. Appelshäuser S. Arcelli R. Arnaldi O. W. Arnold I. C. Arsene M. Arslandok B. Audurier A. Augustinus R. Averbeck M. D. Azmi A. Badalà Y. W. Baek S. Bagnasco R. Bailhache R. Bala A. Baldisseri M. Ball R. C. Baral A. M. Barbano R. Barbera F. Barile L. Barioglio G. G. Barnaföldi L. S. Barnby V. Barret P. Bartalini K. Barth J. Bartke E. Bartsch M. Basile N. Bastid S. Basu B. Bathen G. Batigne A. Batista Camejo B. Batyunya P. C. Batzing I. G. Bearden H. Beck C. Bedda N. K. Behera I. Belikov F. Bellini H. Bello Martinez R. Bellwied L. G. E. Beltran V. Belyaev G. Bencedi S. Beole A. Bercuci Y. Berdnikov D. Berenyi R. A. Bertens D. Berzano L. Betev A. Bhasin I. R. Bhat A. K. Bhati B. Bhattacharjee J. Bhom L. Bianchi N. Bianchi C. Bianchin J. Bielčík J. Bielčíková A. Bilandzic G. Biro R. Biswas S. Biswas J. T. Blair D. Blau C. Blume G. Boca F. Bock A. Bogdanov L. Boldizsár M. Bombara G. Bonomi M. Bonora J. Book H. Borel A. Borissov M. Borri E. Botta C. Bourjau P. Braun-Munzinger M. Bregant T. A. Broker T. A. Browning M. Broz E. J. Brucken E. Bruna G. E. Bruno D. Budnikov H. Buesching S. Bufalino P. Buhler S. A. I. Buitron P. Buncic O. Busch Z. Buthelezi J. B. Butt J. T. Buxton J. Cabala D. Caffarri H. Caines A. Caliva E. Calvo Villar P. Camerini A. A. Capon F. Carena W. Carena F. Carnesecchi J. Castillo Castellanos A. J. Castro E. A. R. Casula C. Ceballos Sanchez P. Cerello J. Cerkala B. Chang S. Chapeland M. Chartier J. L. Charvet S. Chattopadhyay A. Chauvin M. Cherney C. Cheshkov B. Cheynis V. Chibante Barroso D. D. Chinellato S. Cho P. Chochula K. Choi M. Chojnacki S. Choudhury P. Christakoglou C. H. Ch Faculty of Nuclear Sciences and Physical Engineering Czech Technical University in Prague Prague Czech Republic Nuclear Physics Institute Academy of Sciences of the Czech Republic Řež u Prahy Czech Republic Physics Department Panjab University Chandigarh India European Organization for Nuclear Research (CERN) Geneva Switzerland Dipartimento DISAT del Politecnico and Sezione INFN Turin Italy Sezione INFN Turin Italy Indian Institute of Technology Bombay (IIT) Mumbai India Variable Energy Cyclotron Centre Kolkata India Department of Physics Aligarh Muslim University Aligarh India Korea Institute of Science and Technology Information Daejeon South Korea Yale University New Haven Connecticut USA Institute for Theoretical and Experimental Physics Moscow Russia Universidade Estadual de Campinas (UNICAMP) Campinas Brazil National Research Centre Kurchatov Institute Moscow Russia School of Physics and Astronomy University of Birmingham Birmingham United Kingdom Instituto de Física Universidad Nacional Autónoma de México Mexico City Mexico Centro Fermi - Museo Storico della Fisica e Centro Studi e Ricerche “Enrico Fermi” Rome Italy Sezione INFN Bologna Italy Bogolyubov Institute for Theoretical Physics Kiev Ukraine Department of Physics and Technology University of Bergen Bergen Norway Faculty of Engineering Bergen University College Bergen Norway Frankfurt Institute for Advanced Studies Johann Wolfgang Goethe-Universität Frankfurt Frankfurt Germany V. Fock Institute for Physics St. Petersburg State University St. Petersburg Russia Universidade de São Paulo (USP) São Paulo Brazil Central China Normal University Wuhan China National Institute for Physics and Nuclear Engineering Bucharest Romania Research Division and ExtreMe Matter Institute EMMI GSI Helmholtzzentrum für Schwerionenforschung GmbH Darmstadt Germany Physikalisches Institut Ruprecht-Karls-Universität Heidelberg Heidelberg Germany Physics Department Creighton University Omaha Nebraska USA

The production of K*(892)0 and ϕ(1020) mesons in proton-proton (pp) and lead-lead (Pb-Pb) collisions at sNN=2.76TeV has been analyzed using a high luminosity data sample accumulated in 2011 with the ALICE detector at the Large Hadron Collider (LHC). Transverse momentum (pT) spectra have been measured for K*(892)0 and ϕ(1020) mesons via their hadronic decay channels for pT up to 20GeV/c. The measurements in pp collisions have been compared to model calculations and used to determine the nuclear modification factor and particle ratios. The K*(892)0/K ratio exhibits significant reduction from pp to central Pb-Pb collisions, consistent with the suppression of the K*(892)0 yield at low pT due to rescattering of its decay products in the hadronic phase. In central Pb-Pb collisions the pT dependent ϕ(1020)/π and K*(892)0/π ratios show an enhancement over pp collisions for pT≈3GeV/c, consistent with previous observations of strong radial flow. At high pT, particle ratios in Pb-Pb collisions are similar to those measured in pp collisions. In central Pb-Pb collisions, the production of K*(892)0 and ϕ(1020) mesons is suppressed for pT>8GeV/c. This suppression is similar to that of charged pions, kaons, and protons, indicating that the suppression does not depend on particle mass or flavor in the light quark sector.

关键词： Particle & resonance production Relativistic heavy-ion collisions

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Scaling properties of fractional momentum loss of high-pT hadrons in nucleus-nucleus collisions at sNN from 62.4 GeV to 2.76 TeV

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Physical Review C 2016年第2期93卷 024911-024911页

作者： A. Adare S. Afanasiev C. Aidala N. N. Ajitanand Y. Akiba R. Akimoto H. Al-Bataineh J. Alexander M. Alfred H. Al-Ta'ani A. Angerami K. Aoki N. Apadula L. Aphecetche Y. Aramaki R. Armendariz S. H. Aronson J. Asai H. Asano E. C. Aschenauer E. T. Atomssa R. Averbeck T. C. Awes B. Azmoun V. Babintsev M. Bai G. Baksay L. Baksay A. Baldisseri N. S. Bandara B. Bannier K. N. Barish P. D. Barnes B. Bassalleck A. T. Basye S. Bathe S. Batsouli V. Baublis C. Baumann S. Baumgart A. Bazilevsky M. Beaumier S. Beckman S. Belikov R. Belmont R. Bennett A. Berdnikov Y. Berdnikov A. A. Bickley D. S. Blau J. G. Boissevain J. S. Bok H. Borel K. Boyle M. L. Brooks J. Bryslawskyj H. Buesching V. Bumazhnov G. Bunce S. Butsyk C. M. Camacho S. Campbell P. Castera B. S. Chang J.-L. Charvet C.-H. Chen S. Chernichenko C. Y. Chi J. Chiba M. Chiu I. J. Choi J. B. Choi S. Choi R. K. Choudhury P. Christiansen T. Chujo P. Chung A. Churyn O. Chvala V. Cianciolo Z. Citron C. R. Cleven B. A. Cole M. P. Comets M. Connors P. Constantin M. Csanád T. Csörgő T. Dahms S. Dairaku I. Danchev T. W. Danley K. Das A. Datta M. S. Daugherity G. David M. B. Deaton K. DeBlasio K. Dehmelt H. Delagrange A. Denisov D. d'Enterria A. Deshpande E. J. Desmond K. V. Dharmawardane O. Dietzsch L. Ding A. Dion P. B. Diss J. H. Do M. Donadelli L. D'Orazio O. Drapier A. Drees K. A. Drees A. K. Dubey J. M. Durham A. Durum D. Dutta V. Dzhordzhadze S. Edwards Y. V. Efremenko J. Egdemir F. Ellinghaus W. S. Emam T. Engelmore A. Enokizono H. En'yo S. Esumi K. O. Eyser B. Fadem N. Feege D. E. Fields M. Finger M. Finger, Jr. F. Fleuret S. L. Fokin Z. Fraenkel J. E. Frantz A. Franz A. D. Frawley K. Fujiwara Y. Fukao T. Fusayasu S. Gadrat K. Gainey C. Gal P. Gallus P. Garg A. Garishvili I. Garishvili H. Ge F. Giordano A. Glenn H. Gong X. Gong M. Gonin J. Gosset Y. Goto R. Granier de Cassagnac N. Grau S. V. Greene M. Grosse Perdekamp T. Gunji L. Guo H.-Å. Gustafsson T. Hachiya A. Hadj Henni C. Haegemann J. S. Haggerty K. I. Hahn H. Hamagaki J. Hamblen H. F. Hamilton R. Han S. Y. Han J. Han University of Colorado Boulder Colorado 80309 USA Joint Institute for Nuclear Research 141980 Dubna Moscow Region Russia Columbia University New York New York 10027 and Nevis Laboratories Irvington New York 10533 USA Los Alamos National Laboratory Los Alamos New Mexico 87545 USA Department of Physics University of Massachusetts Amherst Massachusetts 01003-9337 USA Department of Physics University of Michigan Ann Arbor Michigan 48109-1040 USA Chemistry Department Stony Brook University SUNY Stony Brook New York 11794-3400 USA RIKEN Nishina Center for Accelerator-Based Science Wako Saitama 351-0198 Japan RIKEN BNL Research Center Brookhaven National Laboratory Upton New York 11973-5000 USA Center for Nuclear Study Graduate School of Science University of Tokyo 7-3-1 Hongo Bunkyo Tokyo 113-0033 Japan New Mexico State University Las Cruces New Mexico 88003 USA Department of Physics and Astronomy Howard University Washington DC 20059 USA KEK High Energy Accelerator Research Organization Tsukuba Ibaraki 305-0801 Japan Kyoto University Kyoto 606-8502 Japan Iowa State University Ames Iowa 50011 USA Department of Physics and Astronomy Stony Brook University SUNY Stony Brook New York 11794-3800 USA SUBATECH (Ecole des Mines de Nantes CNRS-IN2P3 Université de Nantes) BP 20722-44307 Nantes France Physics Department Brookhaven National Laboratory Upton New York 11973-5000 USA Laboratoire Leprince-Ringuet Ecole Polytechnique CNRS-IN2P3 Route de Saclay F-91128 Palaiseau France 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 Collider-Accelerator Department Brookhaven National Laboratory Upton New York 11973-5000 USA Florida Institute of Technology Melbourne Florida 32901 USA Dapnia CEA Saclay F-91191 Gif-sur-Yvette France University of California-Riverside Riverside California 92521 USA University of New Mexic

Measurements of the fractional momentum loss (Sloss≡δpT/pT) of high-transverse-momentum-identified hadrons in heavy-ion collisions are presented. Using π0 in Au+Au and Cu+Cu collisions at sNN=62.4 and 200 GeV measured by the PHENIX experiment at the Relativistic Heavy Ion Collider and and charged hadrons in Pb+Pb collisions measured by the ALICE experiment at the Large Hadron Collider, we studied the scaling properties of Sloss as a function of a number of variables: the number of participants, Npart, the number of quark participants, Nqp, the charged-particle density, dNch/dη, and the Bjorken energy density times the equilibration time, ɛBjτ0. We find that the pT, where Sloss has its maximum, varies both with centrality and collision energy. Above the maximum, Sloss tends to follow a power-law function with all four scaling variables. The data at sNN=200 GeV and 2.76 TeV, for sufficiently high particle densities, have a common scaling of Sloss with dNch/dη and ɛBjτ0, lending insight into the physics of parton energy loss.

关键词： Hard scattering Relativistic heavy-ion collisions Hadrons nuclear data analysis & compilation

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Single electron yields from semileptonic charm and bottom hadron decays in Au+Au collisions at sNN=200 GeV

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Physical Review C 2016年第3期93卷 034904-034904页

作者： A. Adare C. Aidala N. N. Ajitanand Y. Akiba R. Akimoto J. Alexander M. Alfred K. Aoki N. Apadula Y. Aramaki H. Asano E. C. Aschenauer E. T. Atomssa T. C. Awes B. Azmoun V. Babintsev M. Bai N. S. Bandara B. Bannier K. N. Barish B. Bassalleck S. Bathe V. Baublis S. Baumgart A. Bazilevsky M. Beaumier S. Beckman R. Belmont A. Berdnikov Y. Berdnikov D. Black D. S. Blau J. S. Bok K. Boyle M. L. Brooks J. Bryslawskyj H. Buesching V. Bumazhnov S. Butsyk S. Campbell C.-H. Chen C. Y. Chi M. Chiu I. J. Choi J. B. Choi S. Choi R. K. Choudhury P. Christiansen T. Chujo O. Chvala V. Cianciolo Z. Citron B. A. Cole M. Connors N. Cronin N. Crossette M. Csanád T. Csörgő S. Dairaku T. W. Danley A. Datta M. S. Daugherity G. David K. DeBlasio K. Dehmelt A. Denisov A. Deshpande E. J. Desmond O. Dietzsch L. Ding A. Dion P. B. Diss J. H. Do M. Donadelli L. D'Orazio O. Drapier A. Drees K. A. Drees J. M. Durham A. Durum S. Edwards Y. V. Efremenko T. Engelmore A. Enokizono S. Esumi K. O. Eyser B. Fadem N. Feege D. E. Fields M. Finger M. Finger, Jr. F. Fleuret S. L. Fokin J. E. Frantz A. Franz A. D. Frawley Y. Fukao T. Fusayasu K. Gainey C. Gal P. Gallus P. Garg A. Garishvili I. Garishvili H. Ge F. Giordano A. Glenn X. Gong M. Gonin Y. Goto R. Granier de Cassagnac N. Grau S. V. Greene M. Grosse Perdekamp Y. Gu T. Gunji T. Hachiya J. S. Haggerty K. I. Hahn H. Hamagaki H. F. Hamilton S. Y. Han J. Hanks S. Hasegawa T. O. S. Haseler K. Hashimoto R. Hayano S. Hayashi X. He T. K. Hemmick T. Hester J. C. Hill R. S. Hollis K. Homma B. Hong T. Horaguchi T. Hoshino N. Hotvedt J. Huang S. Huang T. Ichihara H. Iinuma Y. Ikeda K. Imai Y. Imazu J. Imrek M. Inaba A. Iordanova D. Isenhower A. Isinhue D. Ivanishchev B. V. Jacak M. Javani M. Jezghani J. Jia X. Jiang B. M. Johnson K. S. Joo D. Jouan D. S. Jumper J. Kamin S. Kanda B. H. Kang J. H. Kang J. S. Kang J. Kapustinsky K. Karatsu D. Kawall A. V. Kazantsev T. Kempel J. A. Key V. Khachatryan P. K. Khandai A. Khanzadeev K. M. Kijima B. I. Kim C. Kim D. J. Kim E.-J. Kim G. W. Kim M. Kim Y.-J. Kim Y. K. Kim University of Colorado Boulder Colorado 80309 USA Los Alamos National Laboratory Los Alamos New Mexico 87545 USA Department of Physics University of Michigan Ann Arbor Michigan 48109-1040 USA Chemistry Department Stony Brook University SUNY Stony Brook New York 11794-3400 USA RIKEN Nishina Center for Accelerator-Based Science Wako Saitama 351-0198 Japan RIKEN BNL Research Center Brookhaven National Laboratory Upton New York 11973-5000 USA Center for Nuclear Study Graduate School of Science University of Tokyo 7-3-1 Hongo Bunkyo Tokyo 113-0033 Japan Department of Physics and Astronomy Howard University Washington DC 20059 USA KEK High Energy Accelerator Research Organization Tsukuba Ibaraki 305-0801 Japan Iowa State University Ames Iowa 50011 USA Department of Physics and Astronomy Stony Brook University SUNY Stony Brook New York 11794-3800 USA Kyoto University Kyoto 606-8502 Japan Physics Department Brookhaven National Laboratory Upton New York 11973-5000 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 Collider-Accelerator Department Brookhaven National Laboratory Upton New York 11973-5000 USA Department of Physics University of Massachusetts Amherst Massachusetts 01003-9337 USA University of California-Riverside Riverside California 92521 USA University of New Mexico Albuquerque New Mexico 87131 USA Baruch College City University of New York New York New York 10010 USA PNPI Petersburg Nuclear Physics Institute Gatchina Leningrad Region 188300 Russia Vanderbilt University Nashville Tennessee 37235 USA Saint Petersburg State Polytechnic University St. Petersburg 195251 Russia National Research Center “Kurchatov Institute ” Moscow 123098 Russia New Mexico State University Las Cruces New Mexico 88003 USA Columbia University New York New York 10027 and Nevis Laboratories Irvington New York 10533 U

The PHENIX Collaboration at the Relativistic Heavy Ion Collider has measured open heavy flavor production in minimum bias Au+Au collisions at sNN=200 GeV via the yields of electrons from semileptonic decays of charm and bottom hadrons. Previous heavy flavor electron measurements indicated substantial modification in the momentum distribution of the parent heavy quarks owing to the quark-gluon plasma created in these collisions. For the first time, using the PHENIX silicon vertex detector to measure precision displaced tracking, the relative contributions from charm and bottom hadrons to these electrons as a function of transverse momentum are measured in Au+Au collisions. We compare the fraction of electrons from bottom hadrons to previously published results extracted from electron-hadron correlations in p+p collisions at sNN=200 GeV and find the fractions to be similar within the large uncertainties on both measurements for pT>4GeV/c. We use the bottom electron fractions in Au+Au and p+p along with the previously measured heavy flavor electron RAA to calculate the RAA for electrons from charm and bottom hadron decays separately. We find that electrons from bottom hadron decays are less suppressed than those from charm for the region 3

关键词： Particle & resonance production Photon, lepton & quark production Relativistic heavy-ion collisions

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Inclusive cross section and double-helicity asymmetry for π0 production at midrapidity in p+p collisions at s=510 GeV

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Physical Review D 2016年第1期93卷 011501(R)-011501(R)页

作者： A. Adare C. Aidala N. N. Ajitanand Y. Akiba R. Akimoto J. Alexander M. Alfred K. Aoki N. Apadula Y. Aramaki H. Asano E. T. Atomssa T. C. Awes B. Azmoun V. Babintsev M. Bai X. Bai N. S. Bandara B. Bannier K. N. Barish S. Bathe V. Baublis C. Baumann S. Baumgart A. Bazilevsky M. Beaumier S. Beckman R. Belmont A. Berdnikov Y. Berdnikov D. Black D. S. Blau J. S. Bok K. Boyle M. L. Brooks J. Bryslawskyj H. Buesching V. Bumazhnov S. Butsyk S. Campbell C.-H. Chen C. Y. Chi M. Chiu I. J. Choi J. B. Choi S. Choi P. Christiansen T. Chujo V. Cianciolo Z. Citron B. A. Cole N. Cronin N. Crossette M. Csanád T. Csörgő T. W. Danley A. Datta M. S. Daugherity G. David K. DeBlasio K. Dehmelt A. Denisov A. Deshpande E. J. Desmond L. Ding A. Dion P. B. Diss J. H. Do L. D’Orazio O. Drapier A. Drees K. A. Drees J. M. Durham A. Durum T. Engelmore A. Enokizono H. En’yo S. Esumi K. O. Eyser B. Fadem N. Feege D. E. Fields M. Finger M. Finger, Jr. F. Fleuret S. L. Fokin J. E. Frantz A. Franz A. D. Frawley Y. Fukao T. Fusayasu K. Gainey C. Gal P. Gallus P. Garg A. Garishvili I. Garishvili H. Ge F. Giordano A. Glenn X. Gong M. Gonin Y. Goto R. Granier de Cassagnac N. Grau S. V. Greene M. Grosse Perdekamp Y. Gu T. Gunji H. Guragain T. Hachiya J. S. Haggerty K. I. Hahn H. Hamagaki H. F. Hamilton S. Y. Han J. Hanks S. Hasegawa T. O. S. Haseler K. Hashimoto R. Hayano X. He T. K. Hemmick T. Hester J. C. Hill R. S. Hollis K. Homma B. Hong T. Hoshino N. Hotvedt J. Huang S. Huang T. Ichihara Y. Ikeda K. Imai Y. Imazu M. Inaba A. Iordanova D. Isenhower A. Isinhue D. Ivanishchev B. V. Jacak S. J. Jeon M. Jezghani J. Jia X. Jiang B. M. Johnson E. Joo K. S. Joo D. Jouan D. S. Jumper J. Kamin S. Kanda B. H. Kang J. H. Kang J. S. Kang J. Kapustinsky D. Kawall A. V. Kazantsev J. A. Key V. Khachatryan P. K. Khandai A. Khanzadeev K. Kihara K. M. Kijima C. Kim D. H. Kim D. J. Kim E.-J. Kim G. W. Kim H.-J. Kim M. Kim Y.-J. Kim Y. K. Kim B. Kimelman E. Kistenev R. Kitamura J. Klatsky D. Kleinjan P. Kline T. Koblesky M. Kofarago B. Komkov J. Koster D. Kotchetkov D University of Colorado Boulder Colorado 80309 USA Los Alamos National Laboratory Los Alamos New Mexico 87545 USA Department of Physics University of Michigan Ann Arbor Michigan 48109-1040 USA Chemistry Department Stony Brook University SUNY Stony Brook New York 11794-3400 USA RIKEN Nishina Center for Accelerator-Based Science Wako Saitama 351-0198 Japan RIKEN BNL Research Center Brookhaven National Laboratory Upton New York 11973-5000 USA Center for Nuclear Study Graduate School of Science University of Tokyo 7-3-1 Hongo Bunkyo Tokyo 113-0033 Japan Department of Physics and Astronomy Howard University Washington DC 20059 USA KEK High Energy Accelerator Research Organization Tsukuba Ibaraki 305-0801 Japan Iowa State University Ames Iowa 50011 USA Department of Physics and Astronomy Stony Brook University SUNY Stony Brook New York 11794-3800 USA Kyoto University Kyoto 606-8502 Japan Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA Physics Department Brookhaven National Laboratory Upton New York 11973-5000 USA IHEP Protvino State Research Center of Russian Federation Institute for High Energy Physics Protvino 142281 Russia Collider-Accelerator Department Brookhaven National Laboratory Upton New York 11973-5000 USA Science and Technology on Nuclear Data Laboratory China Institute of Atomic Energy Beijing 102413 People’s Republic of China Department of Physics University of Massachusetts Amherst Massachusetts 01003-9337 USA University of California-Riverside Riverside California 92521 USA Baruch College City University of New York New York New York 10010 USA PNPI Petersburg Nuclear Physics Institute Gatchina Leningrad region 188300 Russia Vanderbilt University Nashville Tennessee 37235 USA Saint Petersburg State Polytechnic University St. Petersburg 195251 Russia National Research Center “Kurchatov Institute ” Moscow 123098 Russia New Mexico State University Las Cruces New Mexico 88003 USA University of New Mexico Albuqu

PHENIX measurements are presented for the cross section and double-helicity asymmetry (ALL) in inclusive π0 production at midrapidity from p+p collisions at s=510 GeV from data taken in 2012 and 2013 at the Relativistic Heavy Ion Collider. The next-to-leading-order perturbative-quantum-chromodynamics theory calculation is in excellent agreement with the presented cross section results. The calculation utilized parton-to-pion fragmentation functions from the recent DSS14 global analysis, which prefer a smaller gluon-to-pion fragmentation function. The π0ALL results follow an increasingly positive asymmetry trend with pT and s with respect to the predictions and are in excellent agreement with the latest global analysis results. This analysis incorporated earlier results on π0 and jet ALL and suggested a positive contribution of gluon polarization to the spin of the proton ΔG for the gluon momentum fraction range x>0.05. The data presented here extend to a currently unexplored region, down to x∼0.01, and thus provide additional constraints on the value of ΔG.

关键词： Hadron-hadron interactions Pions Protons Hadron colliders

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Dielectron production in Au + Au collisions at sNN=200 GeV

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Physical Review C 2016年第1期93卷 014904-014904页

作者： A. Adare C. Aidala N. N. Ajitanand Y. Akiba R. Akimoto J. Alexander M. Alfred H. Al-Ta'ani A. Angerami K. Aoki N. Apadula Y. Aramaki H. Asano E. C. Aschenauer E. T. Atomssa R. Averbeck T. C. Awes B. Azmoun V. Babintsev M. Bai N. S. Bandara B. Bannier K. N. Barish B. Bassalleck S. Bathe V. Baublis S. Baumgart A. Bazilevsky M. Beaumier S. Beckman R. Belmont A. Berdnikov Y. Berdnikov D. S. Blau J. S. Bok K. Boyle M. L. Brooks J. Bryslawskyj H. Buesching V. Bumazhnov S. Butsyk S. Campbell P. Castera C.-H. Chen C. Y. Chi M. Chiu I. J. Choi J. B. Choi S. Choi R. K. Choudhury P. Christiansen T. Chujo O. Chvala V. Cianciolo Z. Citron B. A. Cole M. Connors M. Csanád T. Csörgő S. Dairaku T. W. Danley A. Datta M. S. Daugherity G. David K. DeBlasio K. Dehmelt A. Denisov A. Deshpande E. J. Desmond K. V. Dharmawardane O. Dietzsch L. Ding A. Dion P. B. Diss J. H. Do M. Donadelli L. D'Orazio O. Drapier A. Drees K. A. Drees J. M. Durham A. Durum S. Edwards Y. V. Efremenko T. Engelmore A. Enokizono S. Esumi K. O. Eyser B. Fadem N. Feege D. E. Fields M. Finger M. Finger, Jr. F. Fleuret S. L. Fokin J. E. Frantz A. Franz A. D. Frawley Y. Fukao T. Fusayasu K. Gainey C. Gal P. Gallus P. Garg A. Garishvili I. Garishvili H. Ge F. Giordano A. Glenn X. Gong M. Gonin Y. Goto R. Granier de Cassagnac N. Grau S. V. Greene M. Grosse Perdekamp T. Gunji L. Guo H.-Å. Gustafsson T. Hachiya J. S. Haggerty K. I. Hahn H. Hamagaki H. F. Hamilton S. Y. Han J. Hanks S. Hasegawa T. O. S. Haseler K. Hashimoto E. Haslum R. Hayano X. He T. K. Hemmick T. Hester J. C. Hill R. S. Hollis K. Homma B. Hong T. Horaguchi Y. Hori T. Hoshino N. Hotvedt J. Huang S. Huang T. Ichihara H. Iinuma Y. Ikeda K. Imai J. Imrek M. Inaba A. Iordanova D. Isenhower M. Issah D. Ivanishchev B. V. Jacak M. Javani M. Jezghani J. Jia X. Jiang B. M. Johnson K. S. Joo D. Jouan D. S. Jumper J. Kamin S. Kanda S. Kaneti B. H. Kang J. H. Kang J. S. Kang J. Kapustinsky K. Karatsu M. Kasai D. Kawall A. V. Kazantsev T. Kempel J. A. Key V. Khachatryan A. Khanzadeev K. M. Kijima B. I. Kim C. Kim D University of Colorado Boulder Colorado 80309 USA Los Alamos National Laboratory Los Alamos New Mexico 87545 USA Department of Physics University of Michigan Ann Arbor Michigan 48109-1040 USA Chemistry Department Stony Brook University SUNY Stony Brook New York 11794-3400 USA RIKEN Nishina Center for Accelerator-Based Science Wako Saitama 351-0198 Japan RIKEN BNL Research Center Brookhaven National Laboratory Upton New York 11973-5000 USA Center for Nuclear Study Graduate School of Science University of Tokyo 7-3-1 Hongo Bunkyo Tokyo 113-0033 Japan Department of Physics and Astronomy Howard University Washington DC 20059 USA New Mexico State University Las Cruces New Mexico 88003 USA Columbia University New York New York 10027 and Nevis Laboratories Irvington New York 10533 USA KEK High Energy Accelerator Research Organization Tsukuba Ibaraki 305-0801 Japan Iowa State University Ames Iowa 50011 USA Department of Physics and Astronomy Stony Brook University SUNY Stony Brook New York 11794-3800 USA Kyoto University Kyoto 606-8502 Japan Physics Department Brookhaven National Laboratory Upton New York 11973-5000 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 Collider-Accelerator Department Brookhaven National Laboratory Upton New York 11973-5000 USA Department of Physics University of Massachusetts Amherst Massachusetts 01003-9337 USA University of California-Riverside Riverside California 92521 USA University of New Mexico Albuquerque New Mexico 87131 USA Baruch College City University of New York New York New York 10010 USA PNPI Petersburg Nuclear Physics Institute Gatchina Leningrad Region 188300 Russia Vanderbilt University Nashville Tennessee 37235 USA Saint Petersburg State Polytechnic University St. Petersburg 195251 Russia National Research Center “Kurchatov Institute ” Moscow 123098 Rus

We present measurements of e+e− production at midrapidity in Au+Au collisions at sNN=200 GeV. The invariant yield is studied within the PHENIX detector acceptance over a wide range of mass (mee<5 GeV/c2) and pair transverse momentum (pT<5 GeV/c) for minimum bias and for five centrality classes. The e+e− yield is compared to the expectations from known sources. In the low-mass region (mee=0.30–0.76 GeV/c2) there is an enhancement that increases with centrality and is distributed over the entire pair pT range measured. It is significantly smaller than previously reported by the PHENIX experiment and amounts to 2.3±0.4(stat)±0.4(syst)±0.2(model) or to 1.7±0.3(stat)±0.3(syst)±0.2(model) for minimum bias collisions when the open heavy-flavor contribution is calculated with pythia or mc@nlo, respectively. The inclusive mass and pT distributions, as well as the centrality dependence, are well reproduced by model calculations where the enhancement mainly originates from the melting of the ρ meson resonance as the system approaches chiral symmetry restoration. In the intermediate-mass region (mee=1.2–2.8 GeV/c2), the data hint at a significant contribution in addition to the yield from the semileptonic decays of heavy-flavor mesons.

关键词： Photon, lepton & quark production Relativistic heavy-ion collisions

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Forward J/ψ production in U + U collisions at sNN=193 GeV

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Physical Review C 2016年第3期93卷 034903-034903页

作者： A. Adare C. Aidala N. N. Ajitanand Y. Akiba R. Akimoto J. Alexander M. Alfred K. Aoki N. Apadula H. Asano E. T. Atomssa T. C. Awes B. Azmoun V. Babintsev M. Bai X. Bai N. S. Bandara B. Bannier K. N. Barish S. Bathe V. Baublis C. Baumann S. Baumgart A. Bazilevsky M. Beaumier S. Beckman R. Belmont A. Berdnikov Y. Berdnikov D. Black D. S. Blau J. S. Bok K. Boyle M. L. Brooks J. Bryslawskyj H. Buesching V. Bumazhnov S. Butsyk S. Campbell C.-H. Chen C. Y. Chi M. Chiu I. J. Choi J. B. Choi S. Choi P. Christiansen T. Chujo V. Cianciolo Z. Citron B. A. Cole N. Cronin N. Crossette M. Csanád T. Csörgő T. W. Danley A. Datta M. S. Daugherity G. David K. DeBlasio K. Dehmelt A. Denisov A. Deshpande E. J. Desmond L. Ding A. Dion P. B. Diss J. H. Do L. D'Orazio O. Drapier A. Drees K. A. Drees J. M. Durham A. Durum T. Engelmore A. Enokizono S. Esumi K. O. Eyser B. Fadem N. Feege D. E. Fields M. Finger M. Finger, Jr. F. Fleuret S. L. Fokin J. E. Frantz A. Franz A. D. Frawley Y. Fukao T. Fusayasu K. Gainey C. Gal P. Gallus P. Garg A. Garishvili I. Garishvili H. Ge F. Giordano A. Glenn X. Gong M. Gonin Y. Goto R. Granier de Cassagnac N. Grau S. V. Greene M. Grosse Perdekamp Y. Gu T. Gunji H. Guragain T. Hachiya J. S. Haggerty K. I. Hahn H. Hamagaki H. F. Hamilton S. Y. Han J. Hanks S. Hasegawa T. O. S. Haseler K. Hashimoto R. Hayano X. He T. K. Hemmick T. Hester J. C. Hill R. S. Hollis K. Homma B. Hong T. Hoshino N. Hotvedt J. Huang S. Huang T. Ichihara Y. Ikeda K. Imai Y. Imazu M. Inaba A. Iordanova D. Isenhower A. Isinhue D. Ivanishchev B. V. Jacak S. J. Jeon M. Jezghani J. Jia X. Jiang B. M. Johnson K. S. Joo D. Jouan D. S. Jumper J. Kamin S. Kanda B. H. Kang J. H. Kang J. S. Kang J. Kapustinsky D. Kawall A. V. Kazantsev J. A. Key V. Khachatryan P. K. Khandai A. Khanzadeev K. M. Kijima C. Kim D. J. Kim E.-J. Kim G. W. Kim M. Kim Y.-J. Kim Y. K. Kim B. Kimelman E. Kistenev R. Kitamura J. Klatsky D. Kleinjan P. Kline T. Koblesky M. Kofarago B. Komkov J. Koster D. Kotchetkov D. Kotov F. Krizek K. Kurita M. Kurosawa Y. Kwon R. Lacey University of Colorado Boulder Colorado 80309 USA Los Alamos National Laboratory Los Alamos New Mexico 87545 USA Department of Physics University of Michigan Ann Arbor Michigan 48109-1040 USA Chemistry Department Stony Brook University SUNY Stony Brook New York 11794-3400 USA RIKEN Nishina Center for Accelerator-Based Science Wako Saitama 351-0198 Japan RIKEN BNL Research Center Brookhaven National Laboratory Upton New York 11973-5000 USA Center for Nuclear Study Graduate School of Science University of Tokyo 7-3-1 Hongo Bunkyo Tokyo 113-0033 Japan Department of Physics and Astronomy Howard University Washington DC 20059 USA KEK High Energy Accelerator Research Organization Tsukuba Ibaraki 305-0801 Japan Iowa State University Ames Iowa 50011 USA Department of Physics and Astronomy Stony Brook University SUNY Stony Brook New York 11794-3800 USA Kyoto University Kyoto 606-8502 Japan Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA Physics Department Brookhaven National Laboratory Upton New York 11973-5000 USA IHEP Protvino State Research Center of Russian Federation Institute for High Energy Physics Protvino 142281 Russia Collider-Accelerator Department Brookhaven National Laboratory Upton New York 11973-5000 USA Science and Technology on Nuclear Data Laboratory China Institute of Atomic Energy Beijing 102413 People's Republic of China Department of Physics University of Massachusetts Amherst Massachusetts 01003-9337 USA University of California-Riverside Riverside California 92521 USA Baruch College City University of New York New York New York 10010 USA PNPI Petersburg Nuclear Physics Institute Gatchina Leningrad region 188300 Russia Vanderbilt University Nashville Tennessee 37235 USA Saint Petersburg State Polytechnic University St. Petersburg 195251 Russia National Research Center “Kurchatov Institute” Moscow 123098 Russia New Mexico State University Las Cruces New Mexico 88003 USA University of New Mexico Alb

The invariant yields, dN/dy, for J/ψ production at forward rapidity (1.2<|y|<2.2) in U+U collisions at sNN=193GeV have been measured as a function of collision centrality. The invariant yields and nuclear-modification factor RAA are presented and compared with those from Au+Au collisions in the same rapidity range. Additionally, the direct ratio of the invariant yields from U+U and Au+Au collisions within the same centrality class is presented, and used to investigate the role of cc¯ coalescence. Two different parametrizations of the deformed Woods-Saxon distribution were used in Glauber calculations to determine the values of the number of nucleon-nucleon collisions in each centrality class, Ncoll, and these were found to give significantly different Ncoll values. Results using Ncoll values from both deformed Woods-Saxon distributions are presented. The measured ratios show that the J/ψ suppression, relative to binary collision scaling, is similar in U+U and Au+Au for peripheral and midcentral collisions, but that J/ψ show less suppression for the most central U+U collisions. The results are consistent with a picture in which, for central collisions, increase in the J/ψ yield due to cc¯ coalescence becomes more important than the decrease in yield due to increased energy density. For midcentral collisions, the conclusions about the balance between cc¯ coalescence and suppression depend on which deformed Woods-Saxon distribution is used to determine Ncoll.

关键词： Particle & resonance production Relativistic heavy-ion collisions

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Measurements of directed, elliptic, and triangular flow in Cu + Au collisions at sNN=200 GeV

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Physical Review C 2016年第5期94卷 054910-054910页

作者： A. Adare C. Aidala N. N. Ajitanand Y. Akiba R. Akimoto J. Alexander M. Alfred K. Aoki N. Apadula H. Asano E. T. Atomssa T. C. Awes B. Azmoun V. Babintsev M. Bai X. Bai N. S. Bandara B. Bannier K. N. Barish S. Bathe V. Baublis C. Baumann S. Baumgart A. Bazilevsky M. Beaumier S. Beckman R. Belmont A. Berdnikov Y. Berdnikov D. Black D. S. Blau J. S. Bok K. Boyle M. L. Brooks J. Bryslawskyj H. Buesching V. Bumazhnov S. Butsyk S. Campbell C.-H. Chen C. Y. Chi M. Chiu I. J. Choi J. B. Choi S. Choi P. Christiansen T. Chujo V. Cianciolo Z. Citron B. A. Cole N. Cronin N. Crossette M. Csanád T. Csörgő T. W. Danley A. Datta M. S. Daugherity G. David K. DeBlasio K. Dehmelt A. Denisov A. Deshpande E. J. Desmond L. Ding A. Dion P. B. Diss J. H. Do L. D'Orazio O. Drapier A. Drees K. A. Drees J. M. Durham A. Durum T. Engelmore A. Enokizono S. Esumi K. O. Eyser B. Fadem N. Feege D. E. Fields M. Finger M. Finger, Jr. F. Fleuret S. L. Fokin J. E. Frantz A. Franz A. D. Frawley Y. Fukao T. Fusayasu K. Gainey C. Gal P. Gallus P. Garg A. Garishvili I. Garishvili H. Ge F. Giordano A. Glenn X. Gong M. Gonin Y. Goto R. Granier de Cassagnac N. Grau S. V. Greene M. Grosse Perdekamp Y. Gu T. Gunji H. Guragain T. Hachiya J. S. Haggerty K. I. Hahn H. Hamagaki H. F. Hamilton S. Y. Han J. Hanks S. Hasegawa T. O. S. Haseler K. Hashimoto R. Hayano X. He T. K. Hemmick T. Hester J. C. Hill R. S. Hollis K. Homma B. Hong T. Hoshino N. Hotvedt J. Huang S. Huang T. Ichihara Y. Ikeda K. Imai Y. Imazu M. Inaba A. Iordanova D. Isenhower A. Isinhue D. Ivanishchev B. V. Jacak S. J. Jeon M. Jezghani J. Jia X. Jiang B. M. Johnson K. S. Joo D. Jouan D. S. Jumper J. Kamin S. Kanda B. H. Kang J. H. Kang J. S. Kang J. Kapustinsky D. Kawall A. V. Kazantsev J. A. Key V. Khachatryan P. K. Khandai A. Khanzadeev K. M. Kijima C. Kim D. J. Kim E.-J. Kim G. W. Kim M. Kim Y.-J. Kim Y. K. Kim B. Kimelman E. Kistenev R. Kitamura J. Klatsky D. Kleinjan P. Kline T. Koblesky M. Kofarago B. Komkov J. Koster D. Kotchetkov D. Kotov F. Krizek K. Kurita M. Kurosawa Y. Kwon R. Lacey University of Colorado Boulder Colorado 80309 USA Los Alamos National Laboratory Los Alamos New Mexico 87545 USA Department of Physics University of Michigan Ann Arbor Michigan 48109-1040 USA Chemistry Department Stony Brook University SUNY Stony Brook New York 11794-3400 USA RIKEN Nishina Center for Accelerator-Based Science Wako Saitama 351-0198 Japan RIKEN BNL Research Center Brookhaven National Laboratory Upton New York 11973-5000 USA Center for Nuclear Study Graduate School of Science University of Tokyo 7-3-1 Hongo Bunkyo Tokyo 113-0033 Japan Department of Physics and Astronomy Howard University Washington D.C. 20059 USA KEK High Energy Accelerator Research Organization Tsukuba Ibaraki 305-0801 Japan Iowa State University Ames Iowa 50011 USA Department of Physics and Astronomy Stony Brook University SUNY Stony Brook New York 11794-3800 USA Kyoto University Kyoto 606-8502 Japan Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA Physics Department Brookhaven National Laboratory Upton New York 11973-5000 USA IHEP Protvino State Research Center of Russian Federation Institute for High Energy Physics Protvino 142281 Russia Collider-Accelerator Department Brookhaven National Laboratory Upton New York 11973-5000 USA Science and Technology on Nuclear Data Laboratory China Institute of Atomic Energy Beijing 102413 People's Republic of China Department of Physics University of Massachusetts Amherst Massachusetts 01003-9337 USA University of California-Riverside Riverside California 92521 USA Baruch College City University of New York New York New York 10010 USA PNPI Petersburg Nuclear Physics Institute Gatchina Leningrad region 188300 Russia Vanderbilt University Nashville Tennessee 37235 USA Saint Petersburg State Polytechnic University St. Petersburg 195251 Russia National Research Center “Kurchatov Institute ” Moscow 123098 Russia New Mexico State University Las Cruces New Mexico 88003 USA University of New Mexico A

Measurements of anisotropic flow Fourier coefficients (vn) for inclusive charged particles and identified hadrons π±, K±, p, and p¯ produced at midrapidity in Cu+Au collisions at sNN=200 GeV are presented. The data were collected in 2012 by the PHENIX experiment at the Relativistic Heavy-Ion Collider (RHIC). The particle azimuthal distributions with respect to different-order symmetry planes Ψn, for n=1, 2, and 3 are studied as a function of transverse momentum pT over a broad range of collision centralities. Mass ordering, as expected from hydrodynamic flow, is observed for all three harmonics. The charged-particle results are compared with hydrodynamical and transport model calculations. We also compare these Cu+Au results with those in Cu+Cu and Au+Au collisions at the same sNN and find that the v2 and v3, as a function of transverse momentum, follow a common scaling with 1/(ɛnNpart1/3).

关键词： Collective flow Particle & resonance production Relativistic heavy-ion collisions

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Transverse energy production and charged-particle multiplicity at midrapidity in various systems from sNN=7.7 to 200 GeV

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Physical Review C 2016年第2期93卷 024901-024901页

作者： A. Adare S. Afanasiev C. Aidala N. N. Ajitanand Y. Akiba R. Akimoto H. Al-Bataineh J. Alexander M. Alfred A. Al-Jamel H. Al-Ta'ani A. Angerami K. Aoki N. Apadula L. Aphecetche Y. Aramaki R. Armendariz S. H. Aronson J. Asai H. Asano E. C. Aschenauer E. T. Atomssa R. Averbeck T. C. Awes B. Azmoun V. Babintsev M. Bai X. Bai G. Baksay L. Baksay A. Baldisseri N. S. Bandara B. Bannier K. N. Barish P. D. Barnes B. Bassalleck A. T. Basye S. Bathe S. Batsouli V. Baublis F. Bauer C. Baumann S. Baumgart A. Bazilevsky M. Beaumier S. Beckman S. Belikov R. Belmont R. Bennett A. Berdnikov Y. Berdnikov J. H. Bhom A. A. Bickley M. T. Bjorndal D. Black D. S. Blau J. G. Boissevain J. S. Bok H. Borel K. Boyle M. L. Brooks D. S. Brown J. Bryslawskyj D. Bucher H. Buesching V. Bumazhnov G. Bunce J. M. Burward-Hoy S. Butsyk S. Campbell A. Caringi P. Castera J.-S. Chai B. S. Chang J.-L. Charvet C.-H. Chen S. Chernichenko C. Y. Chi J. Chiba M. Chiu I. J. Choi J. B. Choi S. Choi R. K. Choudhury P. Christiansen T. Chujo P. Chung A. Churyn O. Chvala V. Cianciolo Z. Citron C. R. Cleven Y. Cobigo B. A. Cole M. P. Comets Z. Conesa del Valle M. Connors P. Constantin N. Cronin N. Crossette M. Csanád T. Csörgő T. Dahms S. Dairaku I. Danchev T. W. Danley K. Das A. Datta M. S. Daugherity G. David M. K. Dayananda M. B. Deaton K. DeBlasio K. Dehmelt H. Delagrange A. Denisov D. d'Enterria A. Deshpande E. J. Desmond K. V. Dharmawardane O. Dietzsch L. Ding A. Dion P. B. Diss J. H. Do M. Donadelli L. D'Orazio J. L. Drachenberg O. Drapier A. Drees K. A. Drees A. K. Dubey J. M. Durham A. Durum D. Dutta V. Dzhordzhadze S. Edwards Y. V. Efremenko J. Egdemir F. Ellinghaus W. S. Emam T. Engelmore A. Enokizono H. En'yo B. Espagnon S. Esumi K. O. Eyser B. Fadem N. Feege D. E. Fields M. Finger M. Finger, Jr. F. Fleuret S. L. Fokin B. Forestier Z. Fraenkel J. E. Frantz A. Franz A. D. Frawley K. Fujiwara Y. Fukao S.-Y. Fung T. Fusayasu S. Gadrat K. Gainey C. Gal P. Gallus P. Garg A. Garishvili I. Garishvili F. Gastineau H. Ge M. Germain F. Giordano A. Glenn H. Gong University of Colorado Boulder Colorado 80309 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 Los Alamos National Laboratory Los Alamos New Mexico 87545 USA Department of Physics University of Massachusetts Amherst Massachusetts 01003-9337 USA Department of Physics University of Michigan Ann Arbor Michigan 48109-1040 USA Chemistry Department Stony Brook University SUNY Stony Brook New York 11794-3400 USA RIKEN Nishina Center for Accelerator-Based Science Wako Saitama 351-0198 Japan RIKEN BNL Research Center Brookhaven National Laboratory Upton New York 11973-5000 USA Center for Nuclear Study Graduate School of Science University of Tokyo 7-3-1 Hongo Bunkyo Tokyo 113-0033 Japan New Mexico State University Las Cruces New Mexico 88003 USA Department of Physics and Astronomy Howard University Washington DC 20059 USA KEK High Energy Accelerator Research Organization Tsukuba Ibaraki 305-0801 Japan Kyoto University Kyoto 606-8502 Japan Iowa State University Ames Iowa 50011 USA Department of Physics and Astronomy Stony Brook University SUNY Stony Brook New York 11794-3800 USA SUBATECH (Ecole des Mines de Nantes CNRS-IN2P3 Université de Nantes) BP 20722-44307 Nantes France Physics Department Brookhaven National Laboratory Upton New York 11973-5000 USA Laboratoire Leprince-Ringuet Ecole Polytechnique CNRS-IN2P3 Route de Saclay F-91128 Palaiseau France 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 Collider-Accelerator Department Brookhaven National Laboratory Upton New York 11973-5000 USA Science and Technology on Nuclear Data Laboratory China Institute of Atomic Energy Beijing 102413 People's Republic of China Florida Institute of Technology Melbourne Florida 32901 USA Dapnia CEA

Measurements of midrapidity charged-particle multiplicity distributions, dNch/dη, and midrapidity transverse-energy distributions, dET/dη, are presented for a variety of collision systems and energies. Included are distributions for Au+Au collisions at sNN=200, 130, 62.4, 39, 27, 19.6, 14.5, and 7.7 GeV, Cu+Cu collisions at sNN=200 and 62.4 GeV, Cu+Au collisions at sNN=200 GeV, U+U collisions at sNN=193 GeV, d+Au collisions at sNN=200 GeV, He3+Au collisions at sNN=200 GeV, and p+p collisions at sNN=200 GeV. Centrality-dependent distributions at midrapidity are presented in terms of the number of nucleon participants, Npart, and the number of constituent quark participants, Nqp. For all A+A collisions down to sNN=7.7 GeV, it is observed that the midrapidity data are better described by scaling with Nqp than scaling with Npart. Also presented are estimates of the Bjorken energy density, ɛBJ, and the ratio of dET/dη to dNch/dη, the latter of which is seen to be constant as a function of centrality for all systems.

关键词： Relativistic heavy-ion collisions nuclear data analysis & compilation

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Predictive simulations of reactor-scale plasmas fuelled with multiple pellets with the European Transport Simulator 42

Predictive simulations of reactor-scale plasmas fuelled with...

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42nd European Physical Society Conference on Plasma physics, EPS 2015

作者： Kalupin, D. Asunta, O. Coelho, R. Coster, D. Ferreira, J. Figueiredo, A. Gal, K. Ivanova-Stanik, I. Jonnson, T. Owsiak, M. Palak, B. Schneider, M. Stankiewicz, R. Strand, P. EUROfusion Consortium Programme Management Unit Boltzmannstr. 2 GarchingD-85748 Germany Department of Applied Physics Aalto University P.O. Box 14100 AaltoFI-00076 Finland Instituto de Plasmas e Fusão Nuclear Instituto Superior Técnico Universidade de Lisboa Lisboa1049-001 Portugal Max-Planck-Institut für Plasmaphysik Garching Germany EuroFusion Consortium Programme Management Unit Culham Science Centre AbingdonOX143DB United Kingdom Institute of Plasma Physics and Laser Microfusion Hery23 Warsaw01-497 Poland Department of Fusion Plasma Physics School of Electrical Engineering KTH Royal Institute of Technology StockholmSE-10044 Sweden Poznan Supercomputing and Networking Center IChB PAS Noskowskiego 12/14 Poznan Poland CEA IRFM Saint-Paul-lez-DuranceF-13108 France Department of Earth and Space Sciences Chalmers University of Technology GöteborgSE-41296 Sweden

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18th European Symposium on Radiopharmacy and Radiopharmaceuticals Salzburg, Austria. 7-10 April 2016

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EJNMMI RADIOPHARMACY AND CHEMISTRY 2016年第1期1卷 1-37页

作者： [Anonymous] Los Alamos National Laboratory Los Alamos USA Oak Ridge National Laboratory Oak Ridge USA Department of Nuclear Medicine Medical University Innsbruck Innsbruck Austria Department of Radiology & Nuclear Medicine Radboud University Medical Center Nijmegen The Netherlands Institute of Molecular and Translational Medicine Faculty of Medicine and Dentistry Palacky University Olomouc Czech Republic Département de Médecine Nucléaire et Radiobiologie Faculté de Médecine et Sciences de la Santé Université de Sherbrooke Sherbrooke Canada Centre d’Imagerie Moléculaire de Sherbrooke (CIMS) CR-CHUS Sherbrooke Canada Division of Molecular Biology/Biocenter Medical University Innsbruck Innsbruck Austria Department of Nuclear Medicine Radboud University Medical Center Nijmegen The Netherlands IENI-CNR Padua Italy DiSCOG-University of Padua Padua Italy IOV Padua Padua Italy IC-CNR Bari Italy IBB-CNR Naples Italy Laboratory of Radiopharmacy KU Leuven Leuven Belgium Micro Flow Chemistry & Process Technology Chemical Engineering and Chemistry Department TU Eindhoven Eindhoven The Netherlands Laboratory for Radiopharmacy University of Leuven Leuven Belgium Department of Nuclear Medicine and Molecular Imaging University of Leuven Leuven Belgium Department of Medicine and Surgery Tecnomed Foundation University of Milano-Bicocca Milan Italy Dipartimento di Biotecnologie Mediche e Medicina Traslazionale Università degli Studi di Milano Milan Italy Department of Radiology & Nuclear Medicine VU University Medical Center Amsterdam The Netherlands Department of Clinical Pharmacology & Pharmacy VU University Medical Center Amsterdam The Netherlands Université de Lorraine Vandoeuvre les Nancy France NancycloTEP Plateforme d’imagerie expérimentale Vandoeuvre les Nancy France CNRS UMR 7565 SRSMC Vandoeuvre les Nancy France CHU de Nancy-Brabois Vandoeuvre les Nancy France Department of Biomedical Imaging and Image-guided Therapy Division of Nuclear Medicine Medical Univers

Table of contents OP03 Selective extraction of medically-related radionuclides from proton-irradiated thorium targets V. Radchenko, J.W. Engle, C. Roy, J. Griswold, M.F. Nortier, E.R. Birnbaum, M. Brugh, S. Mirzadeh, K. D. John, M.E. Fassbender OP04 Comparison of [68Ga]FSC(succ-RGD)3 and [68Ga]NODAGA-RGD for PET imaging of alpha v beta 3 integrin expression Chuangyan Zhai, Gerben M. Franssen, Milos Petrik, Peter Laverman, Clemens Decristoforo OP05 A new NPY-Y1R targeting peptide for breast cancer PET imaging Ait-Mohand Samia, Dumulon-Perreault Veronique, Guerin Brigitte OP06 The influence of multivalency on CCK 2 receptor targeting D. Summer, A. Kroess, C. Rangger, H. Haas, P. Laverman, F. Gerben, E. von Guggenberg, *** OP07 SPECT Imaging of alpha v beta 3 Expression by [99mTc(N)PNP43]- Bifunctional Chimeric RGD Peptide not Cross-Reacting with alpha v beta 5 Cristina Bolzati, Nicola Salvarese, Fiorenzo Refosco, Laura Melendez-Alafort, Debora Carpanese, Antonio Rosato, Michele Saviano, Annarita Del Gatto, Daniela Comegna, Laura Zaccaro OP09 New dienophiles for the inverse-electron-demand Diels-Alder reaction and for pretargeted PET imaging Emilie Billaud, Muneer Ahamed, Frederik Cleeren, Elnaz Shahbazali, Tim Noel, Volker Hessel, Alfons Verbruggen and Guy Bormans OP10 New complexing agent for Al18F-labelling of heat-sensitive biomolecules: Synthesis and preclinical evaluation of Al18F-RESCA1-HAS Cleeren F, Lecina J, Koole M, Verbruggen A and Bormans G OP11 A novel versatile precursor efficient for F-18 radiolabelling via click-chemistry B. Lugatoa, S. Stucchia, E.A. Turollaa, L. Giulianoa, ***, P. Ferraboschib OP12 A general applicable method to quantify unidentified UV impurities in radiopharmaceuticals R.P. Klok, M.P.J. Mooijer, N.H. Hendrikse, A.D. Windhorst OP13 Development of [F-18]Fluoro-C-glycosides to radiolabel peptides Collet C., Petry N., Chretien F., Karcher G., Pellegrini-Moise N., Lamande-Langle S. OP14 A Microfluidic Approach for the 68

关键词： Positron Emission Tomography Single Photon Emission Compute Tomography Standard Uptake Value Positron Emission Tomography Imaging High Pressure Liquid Chromatography

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