Belle和BaBar实验γγ→D(D)和γγ→ωJ/ψ数据的联合分析
Combined analysis of γγ→D(D) and γγ→ωJ/ψ data from Belle and BaBar experiments
周兴玉 1咸秀梅 1温亚冉 1岳崇兴1
作者信息
- 1. 辽宁师范大学物理与电子技术学院,辽宁大连 116029
- 折叠
摘要
B介子工厂实验Belle和BaBar通过研究双光子过程γγ→D(D)和γγ→ωJ/ψ,在D(D)不变质量谱上观测到了粲偶素xc2(2P),在ωJ/ψ不变质量谱上观测到了类粲偶素X(3915),有力地促进了粲偶素和类粲偶素的研究进展.限于统计量,这些分析工作均使用一个信号函数拟合实验数据.在使用单信号函数对这些实验数据进行联合拟合的基础上,尝试使用了双信号函数对这些实验数据进行联合拟合,所得结果为实验数据的诠释提供了一个新的视角,有助于进一步理解xc2(2P)和X(3915)的性质.
Abstract
The B-meson-factory experiments Belle and BaBar,via the studies of the two-photon processes of γγ→D(D)and γγ→ωJ/ψ,observed the charmonium state xc2(2P)in the invariant-mass spectrum of D(D)and the charmonium-like state X(3915)on the invariant-mass spectrum of ωJ/ψ,which greatly prompted the research progress of the charmonium and charmonium-like states.Limited by the statistics,single-signal functions were used to fit to experimental data in these analy-sis works.In this paper,we try to do a simultaneous fit using double-signal functions,in addition to single-signal functions,to analyze these experimental data.The obtained result provides a new per-spective to the interpretation of the experimental data,and is helpful to our understandings of the properties of xc2(2P)and,in particular,X(3915).
关键词
粲偶素/类粲偶素/xc2(2P)/X(3915)Key words
charmonium states/charmonium-like states/xc2(2P)/X(3915)引用本文复制引用
基金项目
国家自然科学基金资助项目(11875157)
国家自然科学基金资助项目(12135005)
国家自然科学基金资助项目(12147214)
出版年
2024
NETL
NSTL
万方数据