Strange Particle and Antiparticle Production in Proton-Beryllium Interactions at 40 GeV/c at the CERN NA57 Experiment
Strange Particle and Antiparticle Production in Proton-Beryllium Interactions at 40 GeV/c at the CERN NA57 Experiment
复制标题
CERN NA57 实验中 40 GeV/c 质子-铍相互作用中奇异粒子和反粒子的产生
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
S. Bull
中科院分区：
文献类型：
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作者：
S. Bull
本文给出了在40 GeV/c束流动量下，p Be碰撞中产生单奇异λ超子、超线超子和K^0 S介子的结果.这些数据是在1999年欧洲核子研究中心SPS的NA 57实验中获得的。给出了三种粒子的产率和横向质谱的综合研究。结果进行了比较，在40 A GeV/c的Pb-Pb数据。特别是，每受伤的核子的产率被认为是增加所有三种粒子的物种时，从p-Be铅-铅碰撞。这是一个建议的签名，使强子物质过渡到一个新的物质阶段，称为夸克胶子等离子体（QGP）。本文综述了QGP物理、它的特征和实验结果，以及它对理解QCD的重要性。详细介绍了NA-57实验装置，并对分析过程和技术以及结果进行了沿着说明。并对其进行了系统学研究。结果进行了比较，WA 97/NA 57的结果在顶部SPS能量和其他SPS和RHIC实验的结果。简要介绍了未来的实验，将研究QGP。
Results are presented on the production of singly strange \(\Lambda\) and \(\overline{\Lambda}\) hyperons and K\(^0\)\(_S\) mesons in p-Be collisions at 40 GeV/c beam momentum. The data were obtained by the NA57 experiment at the CERN SPS in the 1999 data taking period. A comprehensive study of yields and transverse mass spectra for each of the three particle species is given. The results are compared to Pb-Pb data at 40 A GeV/c. In particular, the yields per wounded nucleon are seen to increase for all three particle species when going from p-Be to Pb-Pb collisions. This is a proposed signature that makes the transition of hadronic matter into a new phase of matter known as a Quark-Gluon Plasma (QGP). An overview of QGP physics, its signatures and experimental results together with its importance to the understanding of QCD is given. The NA57 experimental apparatus is described in detail and the analysis procedures and techniques along with the results detailed. A study of the systematics is made. The results are compared to WA97/NA57 results at the top SPS energy and to results from other SPS and RHIC experiments. A brief insight into future experiments that will study the QGP is given.
DOI：
10.1119/1.14146
发表时间：
1984-01
期刊：
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影响因子：
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作者：
F. Halzen;Alan D. Martin
通讯作者：
F. Halzen;Alan D. Martin