Mass spectra and decay properties of the c¯c meson
Mass spectra and decay properties of the c¯c meson
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c´c 介子的质谱和衰变特性
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
A. Rai
中科院分区：
文献类型：
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作者：
Raghav Chaturvedi;A. Rai
。在本文中，我们通过考虑库仑加线性势对薛定谔方程进行数值求解，给出了 c wt c 介子质量计算的结果。利用单胶子交换相互作用的自旋超精细、自旋轨道和张量分量来获得 c ̅ c 介子的质谱。将计算的质谱与PDG的最新结果进行比较，发现吻合良好。还构建了计算质谱的 Regge 轨迹。提取波函数值并用于计算 c ¯ c 介子的 S 波 0 − + 和 1 −− 态的轻子衰变常数 γγ 、 gg 、 e + e − 、轻强子 (LH) 和 γγγ 衰变宽度，这些宽度是通过 Van Royen-Weisskopf 公式和结合 ν 2 阶相对论校正的 NRQCD 机制计算的。还计算了c ́ c 介子的χ 0 和χ 2 态的γγ和gg衰变宽度。计算的衰减常数和宽度与实验结果进行了比较。
. In this article we present the result of c ¯ c meson mass calculation by solving the Schr¨odinger equation numerically considering the Coulomb plus linear potential. The spin-hyperfine, spin-orbit and tensor components of one-gluon–exchange interactions are employed to obtain the mass spectra of c ¯ c meson. The calculated mass spectra are compared with the latest results of PDG and are found to be in good accordance. The Regge trajectories of the calculated mass spectra have also been constructed. The values of the wave function are extracted and employed to calculate the leptonic decay constant, γγ , gg , e + e − , light hadron (LH) and γγγ decay widths of S -wave 0 − + and 1 −− states of c ¯ c meson, the widths have been calculated by Van Royen-Weisskopf formula and by NRQCD mechanism incorporating relativistic corrections of order ν 2 . The γγ and gg decay widths of χ 0 and χ 2 states of c ¯ c meson have also been calculated. The calculated decay constants and widths have been compared with the experimental results.