NA60对158 GeV的In-In碰撞中强子和轻子通道中φ产生的结果
NA60 results on phi production in the hadronic and leptonic channels in In-In collisions at 158 GeV
摘要：
CERN SPS的NA 60实验研究了158 A GeV的In-In碰撞中通过μ子和K介子衰变通道产生phi介子。强子通道的结果是第一次。这些讨论的框架中，所谓的phi难题通过与以前的NA 60测量μ子通道的比较。在两个通道中观测到的产额和反mT斜率在误差范围内是一致的，这表明在NA 50（μ子对）和NA 49（K介子对）之间的Pb-Pb碰撞中观察到的巨大差异在NA 60 In-In数据中没有看到。
英文摘要：
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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