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arXiv 1104.4060nucl-ex
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在CERN SPS上In-In碰撞中$ϕ\rightarrow K^+K^-$和$ϕ\rightarrow μ^+μ^-$的比较测量

A comparative measurement of $ϕ\rightarrow K^+K^-$ and $ϕ\rightarrow μ^+μ^-$ in In-In collisions at the CERN SPS

NA60 Collaboration, R. Arnaldi, K. Banicz, J. Castor, B. Chaurand, W. Chen, C. Cicalò, A. Colla, P. Cortese, S. Damjanovic, A. David, A. de Falco, A. Devaux, L.… 展开作者

NA60 Collaboration, R. Arnaldi, K. Banicz, J. Castor, B. Chaurand, W. Chen, C. Cicalò, A. Colla, P. Cortese, S. Damjanovic, A. David, A. de Falco, A. Devaux, L. Ducroux, H. En'yo, J. Fargeix, A. Ferretti, M. Floris, A. Förster, P. Force, N. Guettet, A. Guichard, H. Gulkanian, J. M. Heuser, M. Keil, Z. Li, C. Lourenço, J. Lozano, F. Manso, P. Martins, A. Masoni, A. Neves, H. Ohnishi, C. Oppedisano, P. Parracho, P. Pillot, T. Poghosyan, G. Puddu, E. Radermacher, P. Ramalhete, P. Rosinsky, E. Scomparin, J. Seixas, S. Serci, R. Shahoyan, P. Sonderegger, H. J. Specht, R. Tieulent, A. Uras, G. Usai, R. Veenhof, H. K. Wöhri

摘要:

CERN SPS的NA 60实验研究了158 A GeV的In-In碰撞中通过$K^+K^-$和$μ^+μ^-$衰变通道产生$ϕ$介子的过程。在两个通道中观测到的$m_T$谱的产额和斜率参数在误差范围内是相容的,不同于在强子(NA 49)和双μ子(NA 50)衰变通道之间的Pb-Pb碰撞中所看到的大的差异。可能的物理影响进行了讨论。

英文摘要:

The NA60 experiment at the CERN SPS has studied $ϕ$ meson production in In-In collisions at 158A GeV via both the $K^+K^-$ and the $μ^+μ^-$ decay channels. The yields and inverse slope parameters of the $m_T$ spectra observed in the two channels are compatible within errors, different from the large discrepancies seen in Pb-Pb collisions between the hadronic (NA49) and dimuon (NA50) decay channels. Possible physics implications are discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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