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arXiv 0904.3186hep-ex
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来自NA60的亮点

Highlights from NA60

A. De Falco, R. Arnaldi, K. Banicz, K. Borer, J. Castor, B. Chaurand, W. Chen, C. Cicalo, A. Colla, P. Cortese, S. Damjanovic, A. David, A. Devaux, L. Ducroux, … 展开作者

A. De Falco, R. Arnaldi, K. Banicz, K. Borer, J. Castor, B. Chaurand, W. Chen, C. Cicalo, A. Colla, P. Cortese, S. Damjanovic, A. David, A. Devaux, L. Ducroux, H. En'yo, J. Fargeix, A. Ferretti, M. Floris, P. Force, A. Forster, N. Guettet, A. Guichard, H. Gulkanian, J. Heuser, M. Keil, L. Kluberg, 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, G. Usai, R. Veenhof, H. Wöhri, .

摘要:

NA 60在CERN SPS测量了p-A和In-In碰撞中的双μ子产生。本文报道了158 AGeV的In-In碰撞中$ϕ$介子产生的高统计测量。横向动量,快度,衰变角分布和绝对产额作为中心性的函数进行测量。将结果与以前的测量结果进行比较,以揭示长期存在的$ϕ$难题。此外,重点介绍了$η$介子的生产和低于J/ $ψ$质量的双μ子过剩。

英文摘要:

NA60 measured dimuon production in p-A and In-In collisions at the CERN SPS. This paper presents a high statistics measurement of $ϕ$ meson production in In-In collisions at 158 AGeV. Both the transverse momentum, rapidity, decay angular distributions and the absolute yield were measured as a function of centrality. The results are compared to previous measurements in order to shed light on the long standing $ϕ$ puzzle. In addition, highlights on $η$ meson production and on the dimuon excess below the J/$ψ$ mass are presented.

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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