Inclusive pion production at the angles 0 degrees and 57.8 degrees in 1 GeV proton-nucleus collisions
Inclusive pion production at the angles 0 degrees and 57.8 degrees in 1 GeV proton-nucleus collisions
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1 GeV 质子-核碰撞中 0 度和 57.8 度角处的包容性π介子产生
DOI：
10.1088/0305-4616/14/7/010
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发表时间：
1988
期刊：
影响因子：
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通讯作者：
N. A. Tarasov
中科院分区：
文献类型：
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作者：
V. Abaev;E. P. Fedorova;A. Gridnev;V. Koptev;S. Kruglov;Y. Malov;G. V. Scherbakov;I. I. Stakovsky;N. A. Tarasov
在质子动能为1GeV的条件下，对1H、2D、10B、11B、12C、16O、24 mg、25 mg、26 mg、27Al、64Cu、116Sn、124Sn、181Ta、184W和208Pb等靶，测量了pA到pIX反应中产生带电介子的微分截面，其相对精度为2-5%。测量是在两个独立的磁谱仪的帮助下进行的，角度接受度为Delta Omega约=0.01sr。在p=200-950 MeV/c的范围内，动量分辨率等于Delta P/P=1.4%；在theta=57.8度，动量分辨率在P=75-600 MeV/sc的范围内，Delta P/P=3%。对于pi+d到pp的反应，使用最近关于d sigma/d欧米伽的LNPI数据进行了横截面的绝对归一化。讨论了各种机制对包含型π介子谱的贡献。
Differential cross sections for charge pion production in the pA to pi X reaction have been measured at a proton kinetic energy of 1 GeV with a relative accuracy of 2-5% for the following targets: 1H, 2D, 10B, 11B, 12C, 16O, 24Mg, 25Mg, 26Mg, 27Al, 64Cu, 116Sn, 124Sn, 181Ta, 184W and 208Pb. The measurements were performed with the help of two independent magnetic spectrometers with an angular acceptance of Delta Omega approximately=0.01 sr. The momentum resolution was equal to Delta P/P=1.4% in the range P=200-950 MeV/c at theta =0 degrees and Delta P/P=3% in the range P=75-600 MeV/sc at theta =57.8 degrees . The absolute normalisation of the cross sections was carried out using recent LNPI data on d sigma /d Omega for the pi +d to pp reaction. The contribution of various mechanisms to the inclusive pion spectra is discussed.