PHOTOPRODUCTION OF PI-DELTA++(1236) FROM HYDROGEN FROM 5 TO 16 GEV

被引:56
作者
BOYARSKI, AM
DIEBOLD, R
ECKLUND, SD
FISCHER, GE
MURATA, Y
RICHTER, B
WILLIAMS, WS
机构
[1] Stanford Linear Accelerator Center, Stanford University, Stanford
[2] Institute of Nuclear Study, University of Tokyo, Tokyo
[3] Nuclear Physics Laboratory, University of Oxford, Oxford
关键词
D O I
10.1103/PhysRevLett.22.148
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The cross section for γp→π-Δ++(1236), measured at 5, 8, 11, and 16 GeV from nearzero momentum transfer to -1 GeV2 (-2 GeV2 at 16 GeV), rises from small t to a maximum near -t=mπ2, then falls as e12t out to -t0.2 GeV2, after which it becomes roughly equal in slope and magnitude to the single π+ photoproduction cross section (e3t). At fixed t, the cross section varies as k-2, where k is the laboratory photon energy. The results do not agree well with the simple vector-dominance model. © 1969 The American Physical Society.
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页码:148 / &
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