The controversy in the gamma gamma->rho rho process: Potential scattering or qq(q)over-bar(q)-over-bar resonance?

被引：3
作者：
Bajc, B [1 ]
Prelovsek, S [1 ]
Rosina, M [1 ]
机构：
[1] UNIV LJUBLJANA, FAC MATH & PHYS, LJUBLJANA 1001, SLOVENIA
来源：
ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI | 1996年 / 356卷 / 02期
关键词：
D O I：
10.1007/s002180050166
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
The gamma gamma --> rho(0) rho(0) --> 4 pi reaction shows a broad peak at 1.5 GeV in the (J(P), J(z)) = (2(+), 2) channel which has no counterpart in the rho(+)rho(-) channel. This ''resonance'' is considered as a candidate for a <qq(qq)over bar> state in the ''s-channel''. We show, however, that it can also be explained by potential scattering of rho(0) rho(0) via the sigma- exchange in the ''t-channel''.
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收藏
页码：187 / 191
页数：5
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