Test of quantum mechanics by neutron interferometry |
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Authors: | H Rauch |
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Institution: | (1) Brookhaven National Laboratory, Upton, NY 11961, USA |
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Abstract: | Measurements of the π0 and direct photon nuclear modification
factors in p+p and A+A collisions in the PHENIX experiment
at RHIC will be reviewed and
recent results at
GeV will be presented. Using
for the first time the p+p reference measured in the same
experiment instead of averaging world data the π0 suppression
turns out to be almost as large at
GeV as at
GeV, implying gluon densities dNg/dy>800.
Possible origins of photon suppression at high pT in
GeV are discussed in light of the new results on
photon RAA at
GeV. |
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Keywords: | |
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