PHOTOPRODUCTION OF PIO WITH PLANE POLARIZED 3-GEV PHOTONS

被引：27
作者：
BELLENGER, D
BORDELON, R
COHEN, K
DEUTSCH, SB
LOBAR, W
LUCKEY, D
OSBORNE, LS
POTHIER, E
SCHWITTERS, R
机构：
[1] Department of Physics and Laboratory for Nuclear Science, Massachusetts Institute of Technology, Cambridge
来源：
PHYSICAL REVIEW LETTERS | 1969年 / 23卷 / 10期
关键词：
D O I：
10.1103/PhysRevLett.23.540
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The cross section for photoproduction of π0 mesons was measured at a photon energy of 3 GeV and squared four-momentum transfer (t) of -0.1 to -1.2 (GeV/c)2 using plane-polarized photons. The asymmetry was found to be consistent with +1.0 for t values above -0.4 and below -1.1. For -0.4<~t<~-1.0 there is a dip in the asymmetry and at t=-0.6 it drops to 0.55 ± 0.15. This result precludes a simple Regge model with ω0 and B; a theoretical description requires Regge cuts or an ω′ exchange. © 1969 The American Physical Society.
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页码：540 / +
页数：1
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