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Extract signals by fitting chi(2) distribution of the kinematic fit
Ping RG(平荣刚); Mo XH(莫晓虎); Du SX(杜书先); Liu J(刘晶); Ma LL(马连良); Shen CP(沈成平); Wang ZY(王至勇); Yuan ZZ(苑长征); Ping, RG; Mo, XH; Du, SX; Liu, J; Ma, LL; Shen, CP; Wang, ZY; Yuan, CZ
2007
发表期刊HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION
卷号31期号:3页码:#REF!
通讯作者Ping, RG (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
文章类型Article
摘要In measuring the psi(2S) radiative decays at BES II, contribution of the background is serious inmost of the final states. To extract the number of signal events, a fit to the chi(2) distribution of kinematic fit using signal and background components is proposed. Extensive Monte-Carlo simulations (MCS) are performed, and the results show that the shape of X 2 distribution of the signal channel looks different from those of the background channels, thus it provides us by fitting the X 2 distribution of the data to extract the number of signal events. An input-output test is performed using MCS, and the uncertainty of the fit method is found to be less than 2%.
关键词radiative decay fit to chi(2) distribution Monte-Carlo simulation
学科领域Physics
收录类别SCI
WOS类目Physics, Nuclear ; Physics, Particles & Fields
WOS记录号WOS:000244902300001
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被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/227077
专题实验物理中心
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GB/T 7714
Ping RG,Mo XH,Du SX,et al. Extract signals by fitting chi(2) distribution of the kinematic fit[J]. HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,2007,31(3):#REF!.
APA 平荣刚.,莫晓虎.,杜书先.,刘晶.,马连良.,...&Yuan, CZ.(2007).Extract signals by fitting chi(2) distribution of the kinematic fit.HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,31(3),#REF!.
MLA 平荣刚,et al."Extract signals by fitting chi(2) distribution of the kinematic fit".HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION 31.3(2007):#REF!.
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