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  1. Direct-Photon Production in p+p Collisions at sqrt(s)=200 GeV at Midrapidity
    Author: Adare, A.; Aphecetche, Laurent; Atomssa, E. T.; Baldisseri, A.; Borel, H.; Charvet, J. -L.; Dahms, T.; d'Enterria, D.; Drapier, O.; Fleuret, F.; Gonin, M.; Gosset, J.; de Cassagnac, R. Granier; Henni, A. Hadj; Jouan, D.; Lenzi, B.; Nguyen, M.; Pereira, H.; Rakotozafindrabe, A.; Roche, G.; Rosnet, P.; Silvestre, C.; Staley, F.; Suire, C.; Tram, V-N.
    Published: 2012
    Publisher:  HAL CCSD ; American Physical Society

    See paper for full list of authors ; PHENIX Collaboration, 383 authors, 16 pages, 14 figures, 7 tables. Submitted to Phys. Rev. D. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be)... more

     

    See paper for full list of authors ; PHENIX Collaboration, 383 authors, 16 pages, 14 figures, 7 tables. Submitted to Phys. Rev. D. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at www.phenix.bnl.gov/papers.html ; The differential cross section for the production of direct photons in p+p collisions at sqrt(s)=200 GeV at midrapidity was measured in the PHENIX detector at the Relativistic Heavy Ion Collider. Inclusive-direct photons were measured in the transverse-momentum range from 5.5--25 GeV/c, extending the range beyond previous measurements. Event structure was studied with an isolation criterion. Next-to-leading-order perturbative-quantum-chromodynamics calculations give a good description of the spectrum. When the cross section is expressed versus x_T, the PHENIX data are seen to be in agreement with measurements from other experiments at different center-of-mass energies.

     
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    Source: BASE Selection for Comparative Literature
    Language: English
    Media type: Article (journal)
    Format: Online
    Parent title: ISSN: 1550-7998 ; EISSN: 1550-2368 ; Physical Review D ; https://hal.in2p3.fr/in2p3-00703928 ; Physical Review D, American Physical Society, 2012, 86, pp.072008. ⟨10.1103/PhysRevD.86.072008⟩
    Subjects: [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]; [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
  2. Direct photon production in d+Au collisions at sqrt(s_NN)=200 GeV at midrapidity
    Author: Adare, A.; Atomssa, E. T.; Baldisseri, A.; Borel, H.; Camard, Xavier; Charvet, J. -L.; Cobigo, Y.; Cussonneau, Jean-Pierre; Dahms, T.; Delagrange, Hugues; Drapier, O.; Finck, C.; Fleuret, F.; Gadrat, S.; Gonin, M.; Gosset, J.; De Cassagnac, R. Granier; Henni, Ahmed Hadj; Lenzi, B.; Martinez Garcia, Gines; Nguyen, M.; Pereira, H.; Rakotozafindrabe, A.; Roche, G.; Rosnet, P.; Schutz, Yves; Staley, F.; Tram, V-N.
    Published: 2012
    Publisher:  HAL CCSD ; American Physical Society

    see paper for full list of authors - 547 authors, 7 pages, 4 figures. Submitted to Phys. Rev. Lett. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at... more

     

    see paper for full list of authors - 547 authors, 7 pages, 4 figures. Submitted to Phys. Rev. Lett. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at www.phenix.bnl.gov/papers.html ; The differential cross section for the production of direct photons in p+p collisions at √s=200 GeV at midrapidity was measured in the PHENIX detector at the Relativistic Heavy Ion Collider. Inclusive direct photons were measured in the transverse momentum range from 5.5-25 GeV/c, extending the range beyond previous measurements. Event structure was studied with an isolation criterion. Next-to-leading-order perturbative-quantum-chromodynamics calculations give a good description of the spectrum. When the cross section is expressed versus xT, the PHENIX data are seen to be in agreement with measurements from other experiments at different center-of-mass energies.

     
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    Source: BASE Selection for Comparative Literature
    Language: English
    Media type: Article (journal)
    Format: Online
    Parent title: ISSN: 1550-7998 ; EISSN: 1550-2368 ; Physical Review D ; http://hal.in2p3.fr/in2p3-00723336 ; Physical Review D, American Physical Society, 2012, 86, pp.072008. ⟨10.1103/PhysRevD.86.072008⟩
    Subjects: [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
  3. Deviation from quark number scaling of the anisotropy parameter v2 of pions, kaons, and protons in Au+Au collisions at √sNN=200 GeV
    Author: Adare, A.; Aphecetche, Laurent; T. Atomssa, E.; Baldisseri, A.; Borel, H.; L. Charvet, J.; Dahms, T.; d'Enterria, D.; Drapier, O.; Fleuret, F.; Gonin, M.; Gosset, J.; Granier de Cassagnac, R.; Hadj Henni, A.; Jouan, D.; Lenzi, B.; Nguyen, M.; Pereira, H.; Rakotozafindrabe, A.; Roche, G.; Rosnet, P.; Silvestre, C.; Staley, F.; Suire, C.; Tram, V.-N.
    Published: 2012
    Publisher:  HAL CCSD ; American Physical Society

    See paper for full list of authors ; Measurements of the anisotropy parameter v2 of identified hadrons (pions, kaons, and protons) as a function of centrality, transverse momentum pT, and transverse kinetic energy KET at midrapidity (|η|<0.35) in Au... more

     

    See paper for full list of authors ; Measurements of the anisotropy parameter v2 of identified hadrons (pions, kaons, and protons) as a function of centrality, transverse momentum pT, and transverse kinetic energy KET at midrapidity (|η|<0.35) in Au + Au collisions at √sNN=200 GeV are presented. Pions and protons are identified up to pT= 6 GeV/c, and kaons up to pT= 4 GeV/c, by combining information from time-of-flight and aerogel Čerenkov detectors in the PHENIX Experiment. The scaling of v2 with the number of valence quarks (nq) has been studied in different centrality bins as a function of transverse momentum and transverse kinetic energy. A deviation from previously observed quark-number scaling is observed at large values of KET/nq in noncentral Au + Au collisions (20-60%), but this scaling remains valid in central collisions (0-10%).

     
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    Source: BASE Selection for Comparative Literature
    Language: English
    Media type: Article (journal)
    Format: Online
    Parent title: ISSN: 2469-9985 ; EISSN: 2469-9993 ; Physical Review C ; http://hal.in2p3.fr/in2p3-00724075 ; Physical Review C, American Physical Society, 2012, 85, pp.064914. &#x27E8;10.1103/PhysRevC.85.064914&#x27E9;
    Subjects: [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]; [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
  4. Erratum: Measurement of transverse single-spin asymmetries for J/psi production in polarized p+p collisions at sqrt(s)=200 GeV [Phys. Rev. D 82, 112008 (2010)]
    Author: Adare, A.; Aphecetche, Laurent; Atomssa, E. T.; Baldisseri, A.; Borel, H.; Charvet, J. -L.; del Valle, Z. Conesa; Dahms, T.; Drapier, O.; Fleuret, F.; Gonin, M.; Gosset, J.; de Cassagnac, R. Granier; Henni, A. Hadj; Jouan, D.; Nguyen, M.; Pereira, H.; Rakotozafindrabe, A.; Tram, V-N.; Roche, G.; Rosnet, P.
    Published: 2012
    Publisher:  HAL CCSD ; American Physical Society

    431 authors from 62 institutions, 3 pages, 2 figures, and 3 tables. Erratum submitted to Physical Review D, see paper for full list of authors ; International audience ; We previously reported [Phys. Rev. D 82, 112008 (2010)] measurements of... more

     

    431 authors from 62 institutions, 3 pages, 2 figures, and 3 tables. Erratum submitted to Physical Review D, see paper for full list of authors ; International audience ; We previously reported [Phys. Rev. D 82, 112008 (2010)] measurements of transverse single-spin asymmetries, A_N, in J/psi production from transversely polarized p+p collisions at sqrt(s)=200 GeV with data taken by the PHENIX experiment at the Relativistic Heavy Ion Collider in 2006 and 2008. Subsequently, we have found errors in the analysis procedures for the 2008 data, which resulted in an erroneous value for the extracted A_N. The errors affected the sorting of events into the correct left/right and forward/backward bins. This produced an incorrect value for the 2008 result, but the 2006 result is unaffected. We have conducted two independent reanalyses with these errors corrected, and we present here the corrected values for the 2008 data and the combined results for 2006 and 2008. The new combined spin asymmetry in the forward region is A_N = -0.026+/-0.026(stat)+/-0.003(sys). Since this asymmetry is consistent with zero, we no longer claim that our results suggest a possible non-zero trigluon correlation function in transversely polarized protons.

     
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    Source: BASE Selection for Comparative Literature
    Language: English
    Media type: Article (journal)
    Format: Online
    Parent title: ISSN: 1550-7998 ; EISSN: 1550-2368 ; Physical Review D ; https://hal.in2p3.fr/in2p3-00745786 ; Physical Review D, American Physical Society, 2012, 86, pp.099904. &#x27E8;10.1103/PhysRevD.86.099904&#x27E9;
    Subjects: [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]