论文标题
besiii的稀有衰减$ j/ψ\至2γ+hadrons $的研究
Study of the rare decay $J/ψ\to 2γ+hadrons$ at the BESIII
论文作者
论文摘要
研究了两光子辐射衰减过程$ j/ψ\至2γ+ hadrons $，并计算了主要贡献过程$ j/ψ\至2γ+ g g g $和$ j/ψ\ to2γ+ q \ bar {q} $。在BESIII的特定条件下，研究了这个罕见的衰减过程和主要背景过程$ e^{+} e^{ - } \toγγ+ Hadron（q \ bar {q}）$。结果表明，在BESIII处，信号与背景的比率可以达到1.24。此外，还提供了一些信号和背景的分布。所有结果表明，信号足够大，可以在实验中测量。
Two-photon radiative decay process $J/ψ\to 2γ+hadrons$ is studied, and the main contribution processes $J/ψ\to 2γ+ g g g$ and $J/ψ\to 2γ+ q \bar{q}$ are calculated. With the specific condition at the BESIII, this rare decay process and the main background process $e^{+} e^{-} \to γγ+ hadrons (q \bar{q})$ are investigated. The results show that the ratio of signal to background can reach 1.24 with the optimized selection criteria at the BESIII. In addition, a few distributions of the signal and background are presented. All the results show that the signal is large enough to be measured in the experiment.
