中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 近代物理研究所
  3. 中国科学院近代物理研究所
Theoretical interpretation of the D-s(+) -> pi(+)pi(0)eta decay and the nature of a(0)(980)

文献类型：期刊论文

作者Molina, Raquel2,3; Xie, Ju-Jun1,4,5; Liang, Wei-Hong2; Geng, Li-Sheng1,6,7; Oset, Eulogio2,8,9
刊名PHYSICS LETTERS B
出版日期2020-04-10
卷号803页码:4
ISSN号0370-2693
DOI10.1016/j.physletb.2020.135279
通讯作者Xie, Ju-Jun(xiejujun@impcas.ac.cn)
英文摘要In a recent paper [I], the BESIII Collaboration reported the so-called first observation of pure W-annihi- lation decays D-s(+) -> a(0)(+) (980)pi(0) and D-s(+) -> a(0)(0)(980)pi(+). The measured absolute branching fractions are, however, puzzlingly larger than those of other measured pure W-annihilation decays by at least one order of magnitude. In addition, the relative phase between the two decay modes is found to be about 0 degrees. In this letter, we show that all these can be easily understood if the a(0)(980) is a dynamically generated state from (K) over barK and pi eta interactions in coupled channels. In such a scenario, the D-s(+) decay proceeds via internal W emission instead of W-annihilation, which has a larger decay rate than W-annihilation. The proposed decay mechanism and the molecular nature of the a(0)(980) also provide a natural explanation to the measured negative interference between the two decay modes. (C) 2020 Published by Elsevier B.V.
WOS关键词2-BODY DECAYS ; F(0)(980) ; F(0)(500) ; RESONANCES
资助项目National Natural Science Foundation of China[11735003] ; National Natural Science Foundation of China[11975041] ; National Natural Science Foundation of China[11475227] ; National Natural Science Foundation of China[11565007] ; National Natural Science Foundation of China[11847317] ; National Natural Science Foundation of China[11975083] ; National Natural Science Foundation of China[1191101015] ; Youth Innovation Promotion Association CAS[2016367] ; Spanish Ministerio de Economia y Competitividadand European FEDER funds[FIS2017-84038-C2-1-P B] ; Spanish Ministerio de Economia y Competitividadand European FEDER funds[FIS2017-84038-C2-2-P B] ; Talento Program of the Community of Madrid[2018-T1/TIC-11167] ; project Severo Ochoa of IFIC[SEV-2014-0398]
WOS研究方向Astronomy & Astrophysics ; Physics
语种英语
出版者ELSEVIER
WOS记录号WOS:000521730300066
资助机构National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; Spanish Ministerio de Economia y Competitividadand European FEDER funds ; Talento Program of the Community of Madrid ; project Severo Ochoa of IFIC
源URL[http://119.78.100.186/handle/113462/140602]  
专题中国科学院近代物理研究所
通讯作者Xie, Ju-Jun
作者单位1.Zhengzhou Univ, Dept Phys & Microelect, Zhengzhou 450001, Henan, Peoples R China
2.Guangxi Normal Univ, Dept Phys, Guilin 541004, Peoples R China
3.Univ Complutense Madrid, Fac Fis, Dept Fis Teor 2, Plaza Ciencias 1, E-28040 Madrid, Spain
4.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
5.Univ Chinese Acad Sci, Beijing 101408, Peoples R China
6.Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China
7.Beihang Univ, Beijing Adv Innovat Ctr Big Data Based Precis Med, Beijing 100191, Peoples R China
8.Univ Valencia, Dept Fis Teor, CSIC, Inst Invest Paterna,Ctr Mixto, Aptdo 22085, Valencia 46071, Spain
9.Univ Valencia, IFIC, CSIC, Ctr Mixto,Inst Invest Paterna, Aptdo 22085, Valencia 46071, Spain
推荐引用方式
GB/T 7714		 Molina, Raquel,Xie, Ju-Jun,Liang, Wei-Hong,et al. Theoretical interpretation of the D-s(+) -> pi(+)pi(0)eta decay and the nature of a(0)(980)[J]. PHYSICS LETTERS B,2020,803:4.
APA Molina, Raquel,Xie, Ju-Jun,Liang, Wei-Hong,Geng, Li-Sheng,&Oset, Eulogio.(2020).Theoretical interpretation of the D-s(+) -> pi(+)pi(0)eta decay and the nature of a(0)(980).PHYSICS LETTERS B,803,4.
MLA Molina, Raquel,et al."Theoretical interpretation of the D-s(+) -> pi(+)pi(0)eta decay and the nature of a(0)(980)".PHYSICS LETTERS B 803(2020):4.

入库方式： OAI收割

来源：近代物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。