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Study of K*(892) mass and width splitting caused by model difference
Li XR(李秀荣); Yuan ZZ(苑长征); Li, XR; Yuan, CZ
2009
发表期刊CHINESE PHYSICS C
卷号33期号:5页码:321-326
通讯作者[Li Xiu-Rong ; Yuan Chang-Zheng] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
文章类型Article
摘要According to the new K*(892)(0) and K*(892)(-) masses reported by the BELLE experiment and the K*(892)(0) mass reported by the FOCUS experiment., mass splitting between neutral and charged K*(892) becomes very small. This is significantly different from the current world average values given by the Particle Data Group 2008. We find that there are differences between models used to fit the K*(892) decay invariant mass spectra in different measurements and study the model dependence in the measurement of K*(892) parameters. We refit the K*(892)(0) mass spectra of the BELLE and FOCUS experiments with the formula used by BELLE in fitting K*(892)(-) to get new mass and width. After refitting, the K*(892)(0) mass of the BELLE experiment, becomes 1.4 MeV/c(2) larger than the initial value and that of the FOCUS experiment is 1 MeV/c(2) smaller than the initial value. We also fit, the spectra, of some other experiments to extract the K*(892) parameters using the BELLE K*(892)(-) parametrization.
关键词K* resonance parameters Breit-Wigner function
学科领域Physics
研究领域[WOS]Physics ; Physics
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语种英语
研究领域[WOS]Physics ; Physics
WOS类目Physics, Nuclear ; Physics, Particles & Fields
WOS记录号WOS:000265617300001
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/236968
专题实验物理中心
粒子天体物理中心
作者单位中国科学院高能物理研究所
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GB/T 7714
Li XR,Yuan ZZ,Li, XR,et al. Study of K*(892) mass and width splitting caused by model difference[J]. CHINESE PHYSICS C,2009,33(5):321-326.
APA 李秀荣,苑长征,Li, XR,&Yuan, CZ.(2009).Study of K*(892) mass and width splitting caused by model difference.CHINESE PHYSICS C,33(5),321-326.
MLA 李秀荣,et al."Study of K*(892) mass and width splitting caused by model difference".CHINESE PHYSICS C 33.5(2009):321-326.
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