单标记方法在psi(3686)重子对衰变中的应用研究

Application of Single Tag Method in psi(3686) Baryonic Pair Decay

作者：陈平亮(南华大学核科学技术学院)；郑波(南华大学核科学技术学院)；王至勇(中国科学院高能物理研究所)

Author：CHEN Ping-Liang(School of Nuclear Science and Technology, University of South China)；ZHENG Bo(School of Nuclear Science and Technology, University of South China)；Wang Zhiyong(Institute of High Energy Physics, Chinese Academy of Sciences)

收稿日期：2016-03-10 年卷（期）页码：2017,54(2):330-334

期刊名称：四川大学学报: 自然科学版

Journal Name：Journal of Sichuan University (Natural Science Edition)

关键字：BESIII探测器，单标记方法，psi(3686)衰变

Key words：BESIII detector，Single tag method， psi(3686) decay

基金项目：国家自然科学基金

中文摘要

基于BOSS软件框架，利用5.06×108 psi(3686)蒙特卡罗样本，对单标记方法与遍举方法在psi(3686)重子对衰变测量开展了研究。结果表明在未考虑次级衰变分支比的情况下单标记方法探测效率达到了34.35%，而遍举方法探测效率仅有3.79%。通过对比两种方法得到的探测效率、信噪比、信号事例数等，我们发现单标记方法在粲偶素衰变到重子对末态的测量中具有更大的优势。

英文摘要

Based on BOSS framework, we studied the single tag method and exclusive method in psi(3686) baryonic pair decay. The results shown that the detection efficiency, without include the intermediate resonance decay branching fractions, can reached up to 34.35% with single tag method while 3.79% with exclusive method. According to our study, the single tag method shows advantage in detection efficiency, signal to noise ratio and signal yields, which is recommended to be employed in study of psi(3686) baryonic pair decay.

【关闭】

论文摘要

单标记方法在psi(3686)重子对衰变中的应用研究

Application of Single Tag Method in psi(3686) Baryonic Pair Decay