[1]张敬庆.不同的多个数据样本联合分析方法中共振态显著性的差异[J].南京师大学报(自然科学版),2022,45(04):21-25.[doi:10.3969/j.issn.1001-4616.2022.04.004]
　Zhang Jingqing.Difference of Resonance Significance in Different Approach of Analysis Using Multiple Datasets[J].Journal of Nanjing Normal University(Natural Science Edition),2022,45(04):21-25.[doi:10.3969/j.issn.1001-4616.2022.04.004]
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不同的多个数据样本联合分析方法中共振态显著性的差异()
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《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

卷:
第45卷
期数:
2022年04期
页码:
21-25
栏目:
物理学
出版日期:
2022-12-15

文章信息/Info

Title:
Difference of Resonance Significance in Different Approach of Analysis Using Multiple Datasets
文章编号:
1001-4616(2022)04-0021-05
作者:
张敬庆
(南京师范大学物理科学与技术学院,江苏 南京 210023)
Author(s):
Zhang Jingqing
(Nanjing Normal University,School of Physics and Technology,Nanjing 210023,China)
关键词:
多个数据样本; 联合拟合; 显著性
Keywords:
multiple datasets; simultaneous fit; significance
分类号:
N56
DOI:
10.3969/j.issn.1001-4616.2022.04.004
文献标志码:
A
摘要:
粒子物理实验中数据统计量影响着物理量的测量精度和显著性的大小. 为了尽可能的扩大统计量,减小测量中的统计误差,提高显著性,同时采用多个数据样本进行同一分析一直是一个有效的方法. 在采用多个不同样本时,通常有两种处理方式. 第一种是直接将不同的数据样本累加,然后作为一个总样本进行分析. 第二种是不进行样本累加,而是在分析中采用联合拟合的方式同时提取出各个样本中信号的相关信息和显著性. 本文对两种方法中共振态显著性的差异进行了研究和比较,研究结果可供使用多个数据样本开展的相关分析参考.
Abstract:
Statistics is important in experiment of particle physics. It will affect not only statistical uncertainty but also significance. To improve sensitive and increase significance,a common way is to combine multiple datasets to enlarge the statistics in the analysis. There are two frequently used approaches. The first one is that the datasets are added together as one whole dataset,then the analysis is performed on this unique dataset. The second approach doesn't need to construct a whole dataset,instead,a simultaneous fit will be applied to all the datasets,and information of the signal will be extracted in this simultaneous fit. In this paper,the difference of resonance significance in these two different approaches are studied. The research and conclusion can be used as a reference for future analysis using multiple datasets.

参考文献/References:

[1]GELL-MANN M. A schematic model of baryons and mesons[J]. Physics letters,1964,8:214-215.
[2]ZWEIG G. An SU3 model for strong interaction symmetry and its breaking[R]. Version 1,Technical Report. CERN-TH-401,CERN,Geneva; 1964.
[3]BRAMBILLA N,EIDELMAN S,FOKA P,et al. QCD and strongly coupled gauge theories:challenges and perspectives[J]. The European physical journal C,2004,74:2981.
[4]BELLE COLLABORATION,CHOI S K. Observation of a narrow charmonium-like state in exclusive B±→K±π+π-J/ψ decays[J]. Physical review letters,2003,91:262001.
[5]BELLE COLLABORATION,ABLIKIM M. Observation of an anomalous line shape of the η'π+π- mass spectrum near the p(-overp) mass threshold in J/ψ→γη'π+π-[J]. Physical review letters,2016,117:042002.
[6]朱永生. 实验物理中的概率和统计[M]. 北京:科学出版社,2020.
[7]PARTICLE DATA GROUP,ZYLA P Z. The review of particle physics[J]. Progress of theoretical and experimental physics,2020,2020:083C01.
[8]BRUN R,RADEMAKERS F. ROOT:An object oriented data analysis framework[J]. Nuclear instruments and methods A,1997,389:81-86.
[9]VERKERKE W,KIRKBY D. The RooFit toolkit for data modeling[C]//Computing in High energy and Nuclear Physics,California,USA,2003. https://arxiv.org/abs/physics/0306116.

备注/Memo

备注/Memo:
收稿日期:2022-05-16.
基金项目:国家自然科学基金面上项目(12075123).
通讯作者:张敬庆,博士,研究方向:粒子物理实验. E-mail:jingjing.zhang@njnu.edu.cn
更新日期/Last Update: 2022-12-15