摘要
本文用矩分析法对J/辐射衰变产生的θ(1720)宽共振峰的结构进行了研究。由于f′_2(1525)和θ(1720)二共振峰有重迭,为此我们讨论了2++(f_2(1525))+0^(++)+0^(++)和2^(++)(f′_2(1525))+0^(++)+2^(++)二种三态耦合结构模式,这对于弄清θ(1720)这个宽共振峰的结构,确定可能包含在其中的二个共振态,例如G(1590)和f_2(1720)的质量、宽度、自旋以及其它重要性质,进一步认识这二个令人关注的共振态是有帮助的。
In this paper the structure of the wide resonance θ(1720) produced in J/Ψ, radiative decay is studied by using moment analysis. Since the f'_2(1525) and θ(1720) resonances overlap in this mass region, two three-states coupling structure modes 2++(f'_2(1525)) + 0^(++)+ 0^(++) and 2^(++)(f'_2(1525)) + 0^(++)+2^(++) are discussed. It is hel_pful to make clear the structure of the wide resonance θ(1720), de-termine masses、widths、spins and other important properties of the two resonance states, for example G(1590) and f_2(1720), including therein and understand the two interesting states better.
出处
《高能物理与核物理》
CSCD
北大核心
1992年第9期807-815,共9页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金
