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arXiv · 0907.4702

NA60 results on phi production in the hadronic and leptonic channels in In-In collisions at 158 GeV

Alessandro De Falco
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Abstract

The NA60 experiment at the CERN SPS studied phi meson production in In-In collisions at 158 A GeV via muon and kaon decay channels. Results in the hadronic channel are presented for the first time. These are discussed in the framework of the so-called phi puzzle through the comparison with the previous NA60 measurements in the muon channel. The yield and inverse m_T slopes observed in the two channels are compatible within errors, showing that the large discrepancies seen in Pb-Pb collisions between NA50 (muon pairs) and NA49 (kaon pairs) are not seen in the NA60 In-In data.

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Alessandro De Falco. 2009-09-21. NA60 results on phi production in the hadronic and leptonic channels in In-In collisions at 158 GeV. https://doi.org/10.1016/j.nuclphysa.2009.10.067

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