Now showing items 21-40 of 83

    • Double-helicity dependence of jet properties from dihadrons in longitudinally polarized p+p collisions at √s=200GeV 

      Adare, Andrew Marshall; Afanasiev, Sergei V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki; Baksay, Gyöngyi; Baksay, László A; Dehmelt, Klaus; Hohlmann, Marcus; Rembeczki, Szabolcs (2010-01-15)
      It has been postulated that partonic orbital angular momentum can lead to a significant double-helicity dependence in the net transverse momentum of Drell-Yan dileptons produced in longitudinally polarized p+p collisions. ...
    • Elliptic and hexadecapole flow of charged hadrons in Au+Au collisions at √sNN=200GeV 

      Baksay, Gyöngyi; Baksay, László A; Hohlmann, Marcus; Adare, Andrew Marshall; Afanasiev, Sergei V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki; Al-Bataineh, H.; Alexander, John M. (2010-08-04)
      Differential measurements of the elliptic (v2) and hexadecapole (v4) Fourier flow coefficients are reported for charged hadrons as a function of transverse momentum (pT) and collision centrality or number of participant ...
    • Enhanced production of direct photons in Au+Au collisions at √sNN=200GeV and implications for the initial temperature 

      Baksay, László A; Baksay, Gyöngyi; Dehmelt, Klaus; Hohlmann, Marcus; Rembeczki, Szabolcs; Adare, Andrew Marshall; Afanasiev, Sergei V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki (2010-03-29)
      The production of e+e- pairs for me+e -<0.3GeV/c2 and 1<pT<5GeV/c is measured in p+p and Au+Au collisions at √sNN=200GeV. An enhanced yield above hadronic sources is observed. Treating the excess as photon internal ...
    • Event structure and double helicity asymmetry in jet production from polarized p+p collisions at √s=200GeV 

      Baksay, Gyöngyi; Baksay, László A; Dehmelt, Klaus; Hohlmann, Marcus; Rembeczki, Szabolcs; Adare, Andrew Marshall; Afanasiev, Sergei V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki (2011-07-21)
      We report on the event structure and double helicity asymmetry (A LL) of jet production in longitudinally polarized p+p collisions at √s=200GeV. Photons and charged particles were measured by the PHENIX experiment at ...
    • 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 ...
    • Heavy-flavor electron-muon correlations in p+p and d+Au collisions at sNN =200 GeV 

      Hohlmann, Marcus; Rembeczki, S.; Baksay, Gyöngyi; Baksay, László A; Adare, Andrew Marshall; Afanasiev, Sergei V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki; Al-Bataineh, H. (2014-03-31)
      Background: Heavy-flavor modification in relativistic p(d)+A collisions are sensitive to different kinds of strong-interaction physics ranging from modifications of the nuclear wave function to initial- and final-state ...
    • Heavy-quark production in p + p and energy loss and flow of heavy quarks in Au + Au collisions at √sNN=200 GeV 

      Baksay, László A; Baksay, Gyöngyi; Dehmelt, Klaus; Hohlmann, Marcus; Rembeczki, Szabolcs; Adare, Andrew Marshall; Afanasiev, Sergei V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki (2011-10-10)
      Transverse momentum spectra of electrons (pTe) from semileptonic weak decays of heavy-flavor mesons in the range of 0.3<pTe<9.0 GeV/c have been measured at midrapidity (|y|<0.35) by the PHENIX experiment at the Relativistic ...
    • High pT direct photon and π0 triggered azimuthal jet correlations and measurement of kT for isolated direct photons in p+p collisions at √s=200GeV 

      Adare, Andrew Marshall; Afanasiev, Sergei V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki; Baksay, Gyöngyi; Baksay, László A; Dehmelt, Klaus; Hohlmann, Marcus; Rembeczki, Szabolcs (2010-10-04)
      Correlations of charged hadrons of 1<pT<10Gev/c with high pT direct photons and π0 mesons in the range 5<p T<15Gev/c are used to study jet fragmentation in the γ+jet and dijet channels, respectively. The magnitude of the ...
    • Identified charged hadron production in p+p collisions at √s=200 and 62.4 GeV 

      Adare, Andrew Marshall; Baksay, Gyöngyi; Baksay, László A; Dehmelt, Klaus; Hohlmann, Marcus; Rembeczki, Szabolcs; Afanasiev, Sergei V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki (2011-06-23)
      Transverse momentum distributions and yields for π±, K±, p, and p in p+p collisions at √s = 200 and 62.4 GeV at midrapidity are measured by the PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC). These data ...
    • 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 ...
    • J/ψ suppression at forward rapidity in Au + Au collisions at √sNN=200 GeV 

      Baksay, Gyöngyi; Baksay, László A; Hohlmann, Marcus; Adare, Andrew Marshall; Afanasiev, Sergei V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki; Al-Bataineh, H.; Alexander, John M. (2011-11-21)
      Heavy quarkonia are observed to be suppressed in relativistic heavy-ion collisions relative to their production in p+p collisions scaled by the number of binary collisions. In order to determine if this suppression is ...
    • 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 ...
    • 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.; Dehmelt, Klaus; Hohlmann, Marcus; Rembeczki, S. (2009)
      The momentum distribution of electrons from semileptonic decays of charm and bottom quarks for midrapidity |y|<0.35 in p+p collisions at s=200GeV is measured by the PHENIX experiment at the Relativistic Heavy Ion Collider ...
    • Measurement of high-pT single electrons from heavy-flavor decays 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. (2006-12-21)
      The momentum distribution of electrons from decays of heavy flavor (charm and bottom) for midrapidity |y|<0.35 in p+p collisions at s=200GeV has been measured by the PHENIX experiment at the BNL Relativistic Heavy Ion ...