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phi and omega−rho production in d–C, d–U, S–U and Pb–Pb at SPS energies

Abstract : Nuclear dependence of phi and ω − ρ production is studied from heavy nuclei and deuteron-induced reactions. In addition to the ratio phi/(ω + ρ), closely related to the strangeness saturation factor γS in transverse mass (MT) domains, absolute cross-sections and multiplicities are also presented. The phi multiplicities for central Pb–Pb collisions, as obtained in the most recent NA50 measurement, lead to an updated version of the phi puzzle, where reduced discrepancy between experiments opens a new space for a systematic difference between the leptonic and hadronic decay channels.
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http://hal.in2p3.fr/in2p3-00421899
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Submitted on : Monday, October 5, 2009 - 10:48:04 AM
Last modification on : Wednesday, September 16, 2020 - 4:07:54 PM

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D. Jouan. phi and omega−rho production in d–C, d–U, S–U and Pb–Pb at SPS energies. Journal of Physics G: Nuclear and Particle Physics, IOP Publishing, 2008, 35, pp.104163. ⟨10.1088/0954-3899/35/10/104163⟩. ⟨in2p3-00421899⟩

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