期刊
PHYSICAL REVIEW D
卷 100, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.100.051101
关键词
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资金
- National Key Basic Research Program of China [2015CB856700]
- Postdoctoral Natural Science Foundation of China [2018M630206, 2017M622347]
- National Natural Science Foundation of China (NSFC) [11335008, 11425524, 11521505, 11605042, 11625523, 11635010, 11675184, 11705209, 11735014, 11875115, 11905236]
- Chinese Academy of Science Focused Science Grant
- National 1000 Talents Program of China
- Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program
- CAS Center for Excellence in Particle Physics (CCEPP)
- Joint Large-Scale Scientific Facility Fund of the NSFC [U1532257, U1532258, U1732263]
- Joint Large-Scale Scientific Facility Fund of the CAS [U1532257, U1532258, U1732263]
- CAS Key Research Program of Frontier Sciences [QYZDJ-SSW-SLH003, QYZDJ-SSW-SLH040]
- 100 Talents Program of CAS
- Institute of Nuclear and Particle Physics, Astronomy and Cosmology
- Shanghai Key Laboratory for Particle Physics and Cosmology
- German Research Foundation DFG [CRC 1044, FOR 2359]
- Istituto Nazionale di Fisica Nucleare, Italy
- Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) [530-4CDP03]
- Ministry of Development of Turkey [DPT2006K-120470]
- National Science and Technology fund
- Swedish Research Council
- U.S. Department of Energy [DE-FG02-05ER41374, DE-SC-0010118, DE-SC-0012069]
- University of Groningen (RuG), Darmstadt
- Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt
- Henan Province [2017SBH005]
- Henan Normal University [qd16164]
- Program for Innovative Research Team in University of Henan Province [19IRTSTHN018]
Using 448.1 x 10(6) psi(3686) events collected with the BESIII detector at BEPCII, we employ a single-baryon tagging technique to make the first observation of psi(3686) -> Xi(1530)(-)(Xi) over bar (1530)(+) and Xi(1530)(-)(Xi) over bar (+) decays with a statistical significance of more than 10 sigma and 5.0 sigma, respectively. The branching fractions are measured to be B(psi(3686) -> Xi(1530)(-)(Xi) over bar (1530)(+)) = (11.45 +/- 0.40 +/- 0.59) x 10(-5) and B(psi(3686) -> Xi(1530)(-)(Xi) over bar (+)) = (0.70 +/- 0.11 +/- 0.04) x 10(-5). The angular distribution parameter for psi(3686) -> Xi(1530)(-)(Xi) over bar (1530)(+) is determined to be alpha = 0.40 +/- 0.24 +/- 0.06, which agrees with the theoretical predictions within 1 sigma. The first uncertainties are statistical, and the second systematic.
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