11. |
- Adare, A., et al.
(författare)
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J/psi production in root s(NN)=200 GeV Cu+Cu collisions
- 2008
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Ingår i: Physical Review Letters. - 1079-7114. ; 101:12
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Tidskriftsartikel (refereegranskat)abstract
- Yields for J/psi production in Cu+Cu collisions at root s(NN) = 200 GeV 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 precision over existing Au+Au data for J/psi production in collisions with small to intermediate numbers of participants, in the range where the quark-gluon plasma transition threshold is predicted to lie. Cold nuclear matter estimates based on ad hoc fits to d+Au data describe the Cu+Cu data up to N-part similar to 50, corresponding to a Bjorken energy density of at least 1.5 GeV/fm(3).
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