Simultaneous least squares fitter based on the Lagrange multiplier method

	Simultaneous least squares fitter based on the Lagrange multiplier method
	Guan, YH; Lu, XR; Zheng, YH; Zhu, YS;朱永生
刊名	CHINESE PHYSICS C
	2013
卷号	37 期号:10 页码:106201
关键词	least squares correlated uncertainties nonlinearity constrained fit
英文摘要	We developed a least squares fitter used for extracting expected physics parameters from the correlated experimental data in high energy physics. This fitter considers the correlations among the observables and handles the nonlinearity using linearization during the chi(2) minimization. This method can naturally be extended to the analysis with external inputs. By incorporating with Lagrange multipliers, the fitter includes constraints among the measured observables and the parameters of interest. We applied this fitter to the study of the D-0-(D) over bar (0) mixing parameters as the test-bed based on MC simulation. The test results show that the fitter gives unbiased estimators with correct uncertainties and the approach is credible.
学科主题	Physics
收录类别	SCI
WOS记录号	WOS:000325445200012
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/224767]
专题	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Guan, YH,Lu, XR,Zheng, YH,et al. Simultaneous least squares fitter based on the Lagrange multiplier method[J]. CHINESE PHYSICS C,2013,37(10):106201.
APA	Guan, YH,Lu, XR,Zheng, YH,&Zhu, YS；朱永生.(2013).Simultaneous least squares fitter based on the Lagrange multiplier method.CHINESE PHYSICS C,37(10),106201.
MLA	Guan, YH,et al."Simultaneous least squares fitter based on the Lagrange multiplier method".CHINESE PHYSICS C 37.10(2013):106201.