Pion absorption above the Delta (1232) resonance
Pion absorption above the Delta (1232) resonance
复制标题
介子吸收高于 Delta (1232) 共振
DOI：
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
C. F. Moore
中科院分区：
文献类型：
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作者：
M. K. Jones;R. Ransome;V. Cupps;R. Fergerson;C. Morris;J. McGill;J. Zumbro;J. Zumbro;J. Comfort;B. Ritchie;J. Tinsley;P. C. Gugelot;C. F. Moore
利用大立体角锗酸铋探测器阵列测量了入射π能从250到500 MeV的[sup 12]C，[sup 58]Ni，[sup 90]Zr，[sup 118]Sn和[sup 208]Pb靶上的双质子和三质子吸收截面。π介子吸收事件导致三个或更多的质子在最终状态被观察到变得更加显着，随着入射π介子能量的增加，并在500兆电子伏占主导地位。总吸收截面从数据分析中推断，不确定性约为25%。
Two-proton and three-proton inclusive [pi][sup +] absorption cross sections were measured for incident pion energies from 250 to 500 MeV on targets of [sup 12]C, [sup 58]Ni, [sup 90]Zr, [sup 118]Sn, and [sup 208]Pb using a large solid angle bismuth germanate detector array. Pion absorption events leading to three or more protons in the final state were observed to become more significant with increasing incident pion energy and were dominant at 500 MeV. The total absorption cross sections were inferred from analyses of the data with uncertanties of approximately 25%.