BESIII上氘核的鉴别
Identification of deuteron at BESIII
AI总结：
本研究利用BESIII探测器数据，基于比电离能量损失信息实现了动量在0.52-0.72 GeV/c范围内的氘核鉴别，鉴别效率高于95%，验证了该方法的有效性并为后续相关物理研究提供了重要参考。
摘要：
利用BESIII探测器在质心能量4.009至4.946 GeV之间采集的数据样本，通过比电离能量损失信息研究了动量在0.52-0.72 GeV/c范围内的氘核鉴别。利用飞行时间信息选取了纯净的氘核样本。所有数据样本的氘核鉴别效率均高于95%，数据与MC模拟之间的最大差异为(4.93±0.95)%。这些结果验证了基于比电离能量损失的氘核鉴别方法的有效性，并为未来在BESIII上研究末态包含氘核的过程提供了有价值的信息。
英文摘要：
The identification of deuteron with momentum in range of $0.52$-$0.72$ GeV/$c$ has been studied with the specific ionization energy loss information, using the data sample collected by the BESIII detector at center-of-mass energies between $4.009$ and $4.946$ GeV. Clean deuteron samples are selected using time of flight information. For all data samples, the deuteron identification efficiencies are higher than $95\%$, with a maximum difference of $(4.93\pm0.95)\%$ between data and MC simulation. These verify the effectiveness of the deuteron identification method based on the specific ionization energy loss, and provide valuable information for the future studies of the processes involving deuteron in the final state at BESIII.
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