Υ Measurements by the PHENIX Collaboration

Whitaker, S. and Adare, A. and Afanasiev, S. and Aidala, C. and Ajitanand, N. N. and Akiba, Y. and Akimoto, R. and Al-Bataineh, H. and Al-Ta’ani, H. and Alexander, J. and Andrews, K. R. and Angerami, A. and Aoki, K. and Apadula, N. and Aphecetche, L. and Appelt, E. and Aramaki, Y. and Armendariz, R. and Aronson, S. H. and Asai, J. and Asano, H. and Aschenauer, E. C. and Atomssa, E. T. and Averbeck, R. and Awes, T. C. and Azmoun, B. and Babintsev, V. and Bai, M. and Bai, X. and Baksay, G. and Csanád, Máté and Csörgő, Tamás and Imrek, József and Kiss, Árpád and Varga-Kőfaragó, Mónika and Nagy, Márton and Ster, András and Sziklai, János István and Tarján, Péter and Vértesi, Róbert and Zimányi, József (2013) Υ Measurements by the PHENIX Collaboration. NUCLEAR PHYSICS A, 910. pp. 462-465. ISSN 0375-9474

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Abstract

PHENIX has measured Υ production in p+p, d+Au and Au+Au collisions at √sNN =200 GeV. A baseline cross- section measurement has been made in p+p collisions. Preliminary studies of d+Au collisions found no suppression in the backward direction, but suppression was observed in the forward direction indicating the presence of cold nuclear matter effects. In Au+Au collisions preliminary studies of Υ production at mid-rapidity found hints of suppression.

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