Now showing items 1-20 of 51

    • Azimuthal anisotropy of π 0 and η mesons in Au + Au collisions at s NN = 200 GeV 

      Adare, Andrew Marshall; Afanasiev, Sergey V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki; Al-Bataineh, H.; Alexander, John M.; Baksay, Gyöngyi; Baksay, László A.; Hohlmann, Marcus (2013-12-20)
      The azimuthal anisotropy coefficients v₂ and v₄ of π⁰ and η mesons are measured in Au + Au collisions at √sNN=200 GeV as a function of transverse momentum pT (1-14 GeV/c) and centrality. The extracted v₂ coefficients are ...
    • Azimuthally anisotropic emission of low-momentum direct photons in Au + Au collisions at √sNN =200 GeV 

      Adare, Andrew Marshall; Afanasiev, Sergey V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki; Akimoto, R.; Baksay, Gyöngyi; Baksay, László A.; Dehmelt, Klaus; Hohlmann, Marcus (2016-12-06)
      The PHENIX experiment at the BNL Relativistic Heavy Ion Collider has measured second- and third-order Fourier coefficients of the azimuthal distributions of direct photons emitted at midrapidity in Au+Au collisions at ...
    • Centrality dependence of low-momentum direct-photon production in Au+Au collisions at √sNN =200 GeV 

      Adare, Andrew Marshall; Afanasiev, Sergey V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki; Akimoto, R.; Al-Bataineh, H.; Baksay, Gyöngyi; Baksay, László A.; Hohlmann, Marcus (2015-06-05)
      The PHENIX experiment at RHIC has measured the centrality dependence of the direct photon yield from Au+Au collisions at √sNN=200 GeV down to pT=0.4 GeV/c. Photons are detected via photon conversions to e+e- pairs and an ...
    • Centrality-Dependent Modification of Jet-Production Rates in Deuteron-Gold Collisions at sNN =200 GeV 

      Adare, Andrew Marshall; Baksay, László A.; Baksay, Gyöngyi; Basye, A. T.; Hamilton, H. F.; Jones, Tim J.; Pinson, R.; Towell, Rusty S.; Wright, R. M.; Hohlmann, Marcus; Rembeczki, S.; Isenhower, Donald (2016-03-24)
      Jet production rates are measured in p+p and d+Au collisions at sNN=200 GeV recorded in 2008 with the PHENIX detector at the Relativistic Heavy Ion Collider. Jets are reconstructed using the R=0.3 anti-kt algorithm from ...
    • Charged hadron multiplicity fluctuations in Au+Au and Cu+Cu collisions from √sNN=22.5 to 200 GeV 

      Adare, Andrew Marshall; Adler, Steven S.; Afanasiev, Sergey V.; Aidala, Christine A.; Ajitanand, N. N.; Baksay, Gyöngyi; Baksay, László A.; Dehmelt, Klaus; Hohlmann, Marcus; Rembeczki, S. (2008-10-07)
      A comprehensive survey of event-by-event fluctuations of charged hadron multiplicity in relativistic heavy ions is presented. The survey covers Au+Au collisions at √sNN=62.4 and 200 GeV, and Cu+Cu collisions at √sNN=22.5,62.4, ...
    • Cold nuclear matter effects on J/ψ production as constrained by deuteron-gold measurements at sNN=200 GeV 

      Adare, Andrew Marshall; Adler, Steven S.; Afanasiev, Sergey V.; Aidala, Christine A.; Ajitanand, N. N.; Baksay, Gyöngyi; Baksay, László A.; Dehmelt, Klaus; Hohlmann, Marcus; Rembeczki, S. (2008-02-28)
      We present a new analysis of J/ψ production yields in deuteron-gold collisions at √sNN=200 GeV using data taken from the PHENIX experiment in 2003 and previously published in S. S. Adler et al. [Phys. Rev. Lett 96, 012304 ...
    • Cold nuclear matter effects on J/ψ yields as a function of rapidity and nuclear geometry in d+A collisions at √s<inf>NN</inf>=200GeV 

      Adare, Andrew Marshall; Afanasiev, Sergey V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki; Al-Bataineh, H.; Baksay, Gyöngyi; Baksay, László A.; Hohlmann, Marcus; Rembeczki, S. (2011-09-27)
      We present measurements of J=c yields in d þ Au collisions at ffiffiffiffiffiffiffiffi sNN p ¼ 200 GeV recorded by the PHENIX experiment and compare them with yields in p þ p collisions at the same energy per ...
    • Cold-nuclear-matter effects on heavy-quark production in d+Au collisions at √s<inf>NN</inf>=200 GeV 

      Adare, Andrew Marshall; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki; Al-Bataineh, H.; Baksay, Gyöngyi; Baksay, László A.; Hohlmann, Marcus; Rembeczki, S.; Alexander, John M. (2012-12-12)
      The PHENIX experiment has measured electrons and positrons at midrapidity from the decays of hadrons containing charm and bottom quarks produced in d þ Au and p þ p collisions at ffiffiffiffiffiffiffiffi sNN p ¼ 200 GeV ...
    • Deviation from quark number scaling of the anisotropy parameter v₂ of pions, kaons, and protons in Au+Au collisions at √s NN=200 GeV 

      Adare, Andrew Marshall; Afanasiev, Sergey V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki; Al-Bataineh, H.; Alexander, John M.; Baksay, Gyöngyi; Baksay, László A.; Hohlmann, Marcus (2012-06-25)
      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 ...
    • Dihadron azimuthal correlations in Au+Au collisions at √sNN=200 GeV 

      Adare, Andrew Marshall; Afanasiev, Sergey V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki; Baksay, Gyöngyi; Baksay, László A.; Dehmelt, Klaus; Hohlmann, Marcus; Rembeczki, S. (2008-07-08)
      Azimuthal angle (Δϕ) correlations are presented for a broad range of transverse momentum (0.4<pT<10 GeV/c) and centrality (0-92%) selections for charged hadrons from dijets in Au+Au collisions at √sNN=200 GeV. With increasing ...
    • Direct photon production in d +Au collisions at √ sNN = 200 GeV 

      Adare, Andrew Marshall; Adler, Steven S.; Afanasiev, Sergei V.; Aidala, C.; Ajitanand, N. N.; Akiba, Yasuyuki; Baksay, Gyöngyi; Baksay, László A.; Hohlmann, Marcus; Rembeczki, Szabolcs (2013-05)
      Direct photons have been measured in √sNN=200 GeV d+Au collisions at midrapidity. A wide pT range is covered by measurements of nearly real virtual photons (1<pT<6 GeV/c) and real photons (5<pT<16 GeV/c). The invariant ...
    • Generalized event shape and energy flow studies in e+e- annihilation at √s = 91.2-208.0 gev 

      Archard, Pablo; Adriáni, Oscar S.; Aguilar-Benítez, M.; Baksay, Gyöngyi; Baksay, László A.; Dehmelt, Klaus; Hohlmann, Marcus; Rembeczki, S.; Szillási, Zolton; Vodopiyanov, Igor (2011-10-31)
      We present results from a study of hadronic event structure in high energy e+e− interactions using the L3 detector at LEP. A new class of event shape distributions are measured at and above the Z boson pole for light quark ...
    • Gluon-Spin contribution to the proton spin from the double-helicity asymmetry in inclusive π0 production in polarized p+p collisions at s=200GeV 

      Adare, Andrew Marshall; Afanasiev, Sergey V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki; Al-Bataineh, H.; Baksay, Gyöngyi; Baksay, László A.; Hohlmann, Marcus; Rembeczki, S. (2009)
      The double helicity asymmetry in neutral pion production for pT=1 to 12GeV/c was measured with the PHENIX experiment to access the gluon-spin contribution, ΔG, to the proton spin. Measured asymmetries are consistent with ...
    • Gluon-Spin contribution to the proton spin from the double-helicity asymmetry in inclusive π0 production in polarized p+p collisions at s=200GeV 

      Adare, Andrew Marshall; Afanasiev, Sergey V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki; Al-Bataineh, H.; Baksay, Gyöngyi; Baksay, László A.; Hohlmann, Marcus; Rembeczki, S. (2009-07-01)
      The double helicity asymmetry in neutral pion production for pT ¼ 1 to 12 GeV=c was measured with the PHENIX experiment to access the gluon-spin contribution, G, to the proton spin. Measured asymmetries are consistent ...
    • Inclusive cross section and single transverse spin asymmetry for very forward neutron production in polarized p+p collisions at √s=200 GeV 

      Adare, Andrew Marshall; Afanasiev, Sergei V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki; Al-Bataineh, H.; Alexander, J.; Baksay, Gyöngyi; Baksay, László A.; Rembeczki, S.; Hohlmann, Marcus (2013-08-08)
      The energy dependence of the single-transverse-spin asymmetry, A N, and the cross section for neutron production at very forward angles were measured in the PHENIX experiment at the Relativistic Heavy Ion Collider for ...
    • J/ψ production in sNN=200GeV Cu+Cu collisions 

      Adare, Andrew Marshall; Afanasiev, Sergey V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki; Baksay, Gyöngyi; Baksay, László A.; Hohlmann, Marcus; Rembeczki, S.; Dehmelt, K. (2008-09-18)
      Yields for J=c production in Cu þ Cu collisions at ffiffiffiffiffiffiffiffi sNN p ¼ 200 GeV have been measured over the rapidity range jyj < 2:2 and compared with results in p þ p and Au þ Au collisions at the same ...
    • J/ψ production in sNN=200GeV Cu+Cu collisions 

      Adare, Andrew Marshall; Afanasiev, Sergey V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki; Baksay, Gyöngyi; Baksay, László A.; Dehmelt, Klaus; Hohlmann, Marcus; Rembeczki, S. (2008-09-18)
      Yields for J/ψ production in Cu+Cu collisions at sNN=200GeV have been measured over the rapidity range |y|<2.2 and compared with results in p+p and Au+Au collisions at the same energy. The Cu+Cu data offer greatly improved ...
    • J/ψ Production versus transverse momentum and rapidity in p+p collisions at s=200GeV 

      Adare, Andrew Marshall; Afanasiev, Sergey V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki; Baksay, Gyöngyi; Baksay, László A.; Dehmelt, Klaus; Hohlmann, Marcus; Rembeczki, S. (2007-06-08)
      J/ψ production in p+p collisions at s=200GeV has been measured by the PHENIX experiment at the BNL Relativistic Heavy Ion Collider over a rapidity range of -2.2<y<2.2 and a transverse momentum range of 0<pT<9GeV/c. The ...
    • J/ψ Production versus transverse momentum and rapidity in p+p collisions at s=200GeV 

      Adare, Andrew Marshall; Afanasiev, Sergey V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki; Baksay, László A.; Hohlmann, Marcus; Rembeczki, S.; Dehmelt, K.; Baksay, Gyöngyi (2007-06-08)
      J= production in p p collisions at s p 200 GeV has been measured by the PHENIX experiment at the BNL Relativistic Heavy Ion Collider over a rapidity range of 2:2 <y< 2:2 and a transverse momentum range of 0 < pT ...
    • Measurement of bottom versus charm as a function of transverse momentum with electron-hadron correlations in p+p Collisions at s=200GeV 

      Adare, Andrew Marshall; Afanasiev, Sergey V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki; Baksay, Gyöngyi; Baksay, László A.; Hohlmann, Marcus; Rembeczki, S.; Dehmelt, K. (2009-08-18)
      The momentum distribution of electrons from semileptonic decays of charm and bottom quarks for midrapidity jyj < 0:35 in p þ p collisions at ffiffi s p ¼ 200 GeV is measured by the PHENIX experiment at the Relativistic ...