期刊
PHYSICAL REVIEW LETTERS
卷 122, 期 7, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.122.072501
关键词
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资金
- Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan
- Japan Society for the Promotion of Science (JSPS)
- Tau-Lepton Physics Research Center of Nagoya University
- Australian Research Council [DP180102629, DP170102389, DP170102204, DP1501 03061, FT130100303]
- Austrian Science Fund [P 26794-N20]
- National Natural Science Foundation of China [11435013, 11475187, 11521505, 11575017, 11675166, 11705209]
- Key Research Program of Frontier Sciences, Chinese Academy of Sciences (CAS) [QYZDJ-SSW-SLH011]
- CAS Center for Excellence in Particle Physics (CCEPP)
- Shanghai Pujiang Program [18PJ1401000]
- Ministry of Education, Youth and Sports of the Czech Republic [LTT17020]
- Carl Zeiss Foundation
- Deutsche Forschungsgemeinschaft
- Excellence Cluster Universe
- VolkswagenStiftung
- Department of Science and Technology of India
- Istituto Nazionale di Fisica Nucleare of Italy
- National Research Foundation (NRF) of Korea [2015H1A2A1033649, 2016R1D1A1B01010135, 2016K1A3A7 A09005 603, 2016R1D1A1B02012900, 2018R1A2B3003 643, 2018R1A6A1 A06024970, 2018R1D1 A1B07047294]
- Radiation Science Research Institute
- Foreign Large-size Research Facility Application Supporting project
- Global Science Experimental Data Hub Center of the Korea Institute of Science and Technology Information
- KREONET/GLORIAD
- Polish Ministry of Science and Higher Education
- National Science Center
- Grant of the Russian Federation Government [14.W03.31.0026]
- Slovenian Research Agency
- Ikerbasque, Basque Foundation for Science, Basque Government [IT956-16]
- Ministry of Economy and Competitiveness (MINECO) (Juan de la Cierva), Spain
- Swiss National Science Foundation
- Ministry of Education
- Ministry of Science and Technology of Taiwan
- United States Department of Energy
- National Science Foundation
We report the first observation of the double strange baryon Xi(1620)(0) in its decay to Xi(-) pi(+) via Xi(+)(c) -> Xi(-)pi(+)pi(+) decays based on a 980 fb(-1) data sample collected with the Belle detector at the KEKB asymmetricenergy e(+)e(-) collider. The mass and width are measured to be 1610.4 +/- 6.0(stat)(-4.2)(+6.1) (syst) MeV/c(2) and 59.9 +/- 4.8(stat)(-7.1)(+2.8)(syst) MeV, respectively. We obtain 4.0 sigma evidence of the Xi(1690)(0) with the same data sample. These results shed light on the structure of hyperon resonances with strangeness S = -2.
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