Now showing items 1-20 of 36

    • 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 ...
    • 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 ...
    • Cross section and double helicity asymmetry for η mesons and their comparison to π0 production 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 (2011-02-01)
      Measurements of double-helicity asymmetries in inclusive hadron production in polarized p+p collisions are sensitive to helicity-dependent parton distribution functions, in particular, to the gluon helicity distribution, ...
    • Detailed measurement of the e+e- pair continuum in p+p and Au+Au collisions at √sNN=200 GeV and implications for direct photon production 

      Baksay, Gyöngyi; Baksay, László A; Hohlmann, Marcus; Rembeczki, Szabolcs; Dehmelt, Klaus; Adare, Andrew Marshall; Afanasiev, Sergei V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki (2010-03-29)
      PHENIX has measured the e+e- pair continuum in √sNN=200□ GeV Au+Au and p+p collisions over a wide range of mass and transverse momenta. The e+e- yield is compared to the expectations from hadronic sources, based on PHENIX ...
    • 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 ...
    • 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. ...
    • 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 ...
    • 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 ...
    • 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 ...
    • 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 higher cumulants of net-charge multiplicity distributions in Au + Au collisions at √sNN =7.7-200 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 (2016-01-19)
      We report the measurement of cumulants (Cn,n=1,...,4) of the net-charge distributions measured within pseudorapidity (|η|<0.35) in Au+Au collisions at √sNN=7.7-200GeV with the PHENIX experiment at the Relativistic Heavy ...
    • Measurement of neutral mesons in p+p collisions at √s=200GeV and scaling properties of hadron production 

      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 (2011-03-16)
      The PHENIX experiment at the Relativistic Heavy Ion Collider has measured the invariant differential cross section for production of KS0, ω, η′, and φ mesons in p+p collisions at √s=200GeV. Measurements of ω and φ production ...
    • Measurements of e+e- pairs from open heavy flavor in p+p and d+A collisions at s NN =200 GeV 

      Baksay, Gyöngyi; Baksay, László A.; Baumann, C.; Dehmelt, Klaus; Hohlmann, Marcus; Kikuchi, Jun; Klein-Boesing, Christian; Rembeczki, S.; Reygers, Klaus Johannes; Sahlmueller, Baldo; Wessels, Johannes P.; Yamaguchi, Yoshio; Adare, A. (2017-08-18)
      We report a measurement of e+e- pairs from semileptonic heavy-flavor decays in p+p collisions at sNN=200 GeV. The e+e- pair yield from bb and cc is separated by exploiting a double differential fit done simultaneously in ...
    • Measurements of elliptic and triangular flow in high-multiplicity 3He+Au collisions at √sNN = 200 GeV 

      Adare, A.M.; Afanasiev, Sergei V.; Aidala, Christine A.; Ajitanand; Ajitanand, N. N.; Baksay, Gyöngyi; Baksay, László A.; Dehmelt, Klaus; Hohlmann, Marcus; Rembeczki, S. (2015-10-02)
      We present the first measurement of elliptic (v2) and triangular (v3) flow in high-multiplicity 3He+Au collisions at √sNN = 200 GeV. Two-particle correlations, where the particles have a large separation in pseudorapidity, ...