Study of K*(892) mass and width splitting caused by model difference
文献类型：期刊论文
| 作者 | Li XR(李秀荣) ; Yuan ZZ(苑长征); Li, XR; Yuan, CZ
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| 刊名 | CHINESE PHYSICS C
 |
| 出版日期 | 2009 |
| 卷号 | 33期号:5页码:321-326 |
| 关键词 | K* resonance parameters Breit-Wigner function |
| 通讯作者 | [Li Xiu-Rong ; Yuan Chang-Zheng] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China |
| 英文摘要 | 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. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Nuclear ; Physics, Particles & Fields |
| 研究领域[WOS] | Physics |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000265617300001 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/236968]  |
| 专题 | 高能物理研究所_实验物理中心 高能物理研究所_粒子天体物理中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：高能物理研究所
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