SUMS OF THE SEARCH FOR 4-QUARK STATES IN GAMMA-GAMMA COLLISIONS

被引：25

作者：

ACHASOV, NN

SHESTAKOV, GN

机构：

来源：

USPEKHI FIZICHESKIKH NAUK | 1991年 / 161卷 / 06期

关键词：

D O I：

10.3367/UFNr.0161.199106b.0053

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A review of the results of the search for four-quark states in gamma-gamma collisions during the last decade is presented. The resonance phenomena in the reactions gamma-gamma --> rho-0-rho-0, gamma-gamma --> rho+rho-, gamma-gamma --> omega-rho-0, gamma-gamma --> K*KBAR*, gamma-gamma --> omega-omega, gamma-gamma --> phi-V, gamma-gamma --> pi-0-eta, gamma-gamma --> pi-pi are discussed in detail. In particular, it is shown that presently there are telling arguments for observation of a tensor exotic q2q2BAR resonance with isospin I = 2 near the rho-rho threshold un gamma-gamma --> rho-0-rho-0, gamma-gamma --> rho+rho-. A set of new experiments for the elucidation of the physical nature of the considered phenomena is also suggested.

引用

页码：53 / 108

页数：56

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