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Träfflista för sökning "WFRF:(Tydesjö Henrik) srt2:(2015-2019)"

Sökning: WFRF:(Tydesjö Henrik) > (2015-2019)

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1.
  • Adare, A., et al. (författare)
  • Beam Energy and Centrality Dependence of Direct-Photon Emission from Ultrarelativistic Heavy-Ion Collisions
  • 2019
  • Ingår i: Physical Review Letters. - 1079-7114. ; 123:2
  • Tidskriftsartikel (refereegranskat)abstract
    • The PHENIX collaboration presents first measurements of low-momentum (0.41 GeV/c) direct-photon yield dNγdir/dη is a smooth function of dNch/dη and can be well described as proportional to (dNch/dη)α with α≈1.25. This scaling behavior holds for a wide range of beam energies at the Relativistic Heavy Ion Collider and the Large Hadron Collider, for centrality selected samples, as well as for different A+A collision systems. At a given beam energy, the scaling also holds for high pT (>5 GeV/c), but when results from different collision energies are compared, an additional sNN-dependent multiplicative factor is needed to describe the integrated-direct-photon yield. © 2019 authors. Published by the American Physical Society.
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2.
  • Adare, A, et al. (författare)
  • PHENIX Collaboration
  • 2017
  • Ingår i: Nuclear Physics A. - 0375-9474. ; 967, s. 996-1003
  • Tidskriftsartikel (refereegranskat)
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3.
  • Adare, A., et al. (författare)
  • PHENIX Collaboration
  • 2016
  • Ingår i: ; , s. 964-970
  • Konferensbidrag (refereegranskat)
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4.
  • Adare, A., et al. (författare)
  • Systematic study of azimuthal anisotropy in Cu plus Cu and Au plus Au collisions at root s(NN)=62.4 and 200 GeV
  • 2015
  • Ingår i: Physical Review C (Nuclear Physics). - 0556-2813. ; 92:3
  • Tidskriftsartikel (refereegranskat)abstract
    • We have studied the dependence of azimuthal anisotropy nu(2) for inclusive and identified charged hadrons in Au + Au and Cu + Cu collisions on collision energy, species, and centrality. The values of nu(2) as a function of transverse momentum pT and centrality in Au + Au collisions at root s(NN) = 200 and 62.4 GeV are the same within uncertainties. However, in Cu + Cu collisions we observe a decrease in nu(2) values as the collision energy is reduced from 200 to 62.4 GeV. The decrease is larger in the more peripheral collisions. By examining both Au + Au and Cu + Cu collisions we find that nu(2) depends both on eccentricity and the number of participants, N-part. We observe that nu(2) divided by eccentricity (epsilon) monotonically increases with N-part and scales as N-part(1/3). The Cu + Cu data at 62.4 GeV falls below the other scaled nu(2) data. For identified hadrons, nu(2) divided by the number of constituent quarks n(q) is independent of hadron species as a function of transverse kinetic energy K E-T = m(T) - m between 0.1 < K E-T / n(q) < 1 GeV. Combining all of the above scaling and normalizations, we observe a near-universal scaling, with the exception of the Cu + Cu data at 62.4 GeV, of nu(2)/(nq center dot e center dot N-part(1/3)) vs K E-T / n(q) for all measured particles.
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  • Resultat 1-4 av 4

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