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Träfflista för sökning "WAKA:ref ;pers:(Gustafsson Hans Åke);pers:(He X.);pers:(Kochenda L.);pers:(Drees A.);srt2:(2010-2014)"

Search: WAKA:ref > Gustafsson Hans Åke > He X. > Kochenda L. > Drees A. > (2010-2014)

  • Result 51-52 of 52
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51.
  • Adler, S. S., et al. (author)
  • Transverse-energy distributions at midrapidity in p plus p, d plus Au, and Au plus Au collisions at root s(NN)=62.4-200 GeV and implications for particle-production models
  • 2014
  • In: Physical Review C (Nuclear Physics). - 0556-2813. ; 89:4
  • Journal article (peer-reviewed)abstract
    • Measurements of the midrapidity transverse-energy distribution, dE(T)/d eta, are presented for p + p, d+Au, and Au+Au collisions atv root s(NN) = 200 GeV and additionally for Au+Au collisions atv root s(NN) = 62.4 and 130 GeV. The dE(T)/d eta distributions are first compared with the number of nucleon participants N-part, number of binary collisions N-coll, and number of constituent-quark participants N-qp calculated from a Glauber model based on the nuclear geometry. For Au+Au, < dE(T)/d eta >/N-part increases with N-part, while < dE(T)/d eta >/N-qp is approximately constant for all three energies. This indicates that the two-component ansatz, dE(T)/d eta alpha (1 - x)N-part/2 + xN(coll), which was used to represent E-T distributions, is simply a proxy for N-qp, and that the N-coll term does not represent a hard-scattering component in E-T distributions. The dE(T)/d eta distributions of Au+Au and d+Au are then calculated from the measured p + p E-T distribution using two models that both reproduce the Au+Au data. However, while the number-of-constituent-quark-participant model agrees well with the d+Au data, the additive-quark model does not.
  •  
52.
  • Afanasiev, S., et al. (author)
  • Measurement of Direct Photons in Au plus Au Collisions at root s(NN)=200 GeV
  • 2012
  • In: Physical Review Letters. - 1079-7114. ; 109:15
  • Journal article (peer-reviewed)abstract
    • We report the measurement of direct photons at midrapidity in Au + Au collisions at root s(NN) = 200 GeV. The direct photon signal was extracted for the transverse momentum range of 4 GeV/c < pT < 22 GeV/c, using a statistical method to subtract decay photons from the inclusive photon sample. The direct photon nuclear modification factor R-AA was calculated as a function of p(T) for different Au + Au collision centralities using the measured p + p direct photon spectrum and compared to theoretical predictions. R-AA was found to be consistent with unity for all centralities over the entire measured pT range. Theoretical models that account for modifications of initial direct photon production due to modified parton distribution functions in Au and the different isospin composition of the nuclei predict a modest change of R-AA from unity. They are consistent with the data. Models with compensating effects of the quark-gluon plasma on high-energy photons, such as suppression of jet-fragmentation photons and induced-photon bremsstrahlung from partons traversing the medium, are also consistent with this measurement.
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  • Result 51-52 of 52
Type of publication
journal article (52)
Type of content
peer-reviewed (52)
Author/Editor
Silvermyr, D. (52)
Gustafsson, Hans... (52)Undo refine
Stenlund, Evert (52)
Hill, J. C. (52)
Jia, J. (52)
Leite, M. A. L. (52)
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Milov, A. (52)
Nakamura, T. (52)
Grau, N. (52)
Lebedev, A. (52)
Bathe, S. (52)
Boyle, K (52)
Awes, T. C. (52)
Buesching, H. (52)
Chujo, T. (52)
Enokizono, A. (52)
Glenn, A. (52)
Gunji, T. (52)
Hamagaki, H. (52)
Horaguchi, T. (52)
Inaba, M. (52)
Kang, J. H. (52)
Khanzadeev, A. (52)
Kim, D. J. (52)
Kwon, Y. (52)
Miake, Y. (52)
Newby, J. (52)
Okada, K. (52)
Ozawa, K. (52)
Pereira, H. (52)
Rak, J. (52)
Read, K. F. (52)
Reygers, K. (52)
Samsonov, V. (52)
Shigaki, K. (52)
Shimomura, M. (52)
Sugitate, T. (52)
Torii, H. (52)
Wessels, J. (52)
Esumi, S. (52)
Nagle, J. L. (52)
Alexander, J (52)
Fleuret, F. (52)
Nguyen, M (52)
Tanaka, Y. (52)
Drapier, O. (52)
Gonin, M. (52)
Riabov, V. (52)
Singh, V. (52)
Hong, B (52)
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University
Lund University (52)
Language
English (52)
Research subject (UKÄ/SCB)
Natural sciences (52)

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