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arXiv 1104.3064hep-phhep-exnucl-exnucl-th
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赝标介子族中共振态X(1835)、X(2120)和X(2370)的分类

Categorizing resonances X(1835), X(2120) and X(2370) in the pseudoscalar meson family

Jie-Sheng Yu, Zhi-Feng Sun, Xiang Liu, Qiang Zhao

摘要:

受新观测到的X(1835),X(2120)和X(2370)三个共振态的启发,本文将$η(1295)/η(1475)$,$η(1760)/X(1835)$,X(2120)和X(2370)归类为$η(548)/η^\prime(958)$的径向激发态,系统地研究了$η(1295)/η(1475)$,$η(1760)/X(1835)$和$X(2120)/X(2370)$的二体强衰变和双π衰变.计算结果表明:(1)计算得到的三个赝标态$η(1295)$、$η(1475)$和$η(1760)$的强衰变宽度与实验测量结果一致;(2)X(1835)可能是$η^\prime(958)$的第二径向激发;(3)X(2120)和X(2370)分别可以解释为$η(548)/η^\prime(958)$的第三和第四径向激发.

英文摘要:

Inspired by the newly observed three resonances X(1835), X(2120) and X(2370), in this work we systematically study the two-body strong decays and double pion decays of $η(1295)/η(1475)$, $η(1760)/X(1835)$ and $X(2120)/X(2370)$ by categorizing $η(1295)/η(1475)$, $η(1760)/X(1835)$, X(2120) and X(2370) as the radial excitations of $η(548)/η^\prime(958)$. Our numerical results indicate the followings: (1) The obtained theoretical strong decay widths of three pseudoscalar states $η(1295)$, $η(1475)$ and $η(1760)$ are consistent with the experimental measurements; (2) X(1835) could be the second radial excitation of $η^\prime(958)$; (3) X(2120) and X(2370) can be explained as the third and fourth radial excitations of $η(548)/η^\prime(958)$, respectively.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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