期刊
PHYSICAL REVIEW D
卷 104, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.104.012006
关键词
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资金
- National Key Research and Development Program of China [2020YFA0406400, 2020YFA0406300]
- National Natural Science Foundation of China (NSFC) [11605124, 11625523, 11635010, 11735014, 11822506, 11835012, 11935015, 11935016, 11935018, 11961141012, 12022510, 12035013, 12061131003, U1732263, U1832207, U1932101, U1932108]
- Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program
- CAS [U1732263, U1832207, U1932101, U1932108]
- CAS Key Research Program of Frontier Sciences [QYZDJ-SSW-SLH040]
- 100 Talents Program of CAS
- Fundamental Research Funds for the Central Universities
- INPAC
- Shanghai Key Laboratory for Particle Physics and Cosmology
- ERC [758462]
- European Union Horizon 2020 research and innovation programme under Marie Sklodowska-Curie Grant [894790]
- German Research Foundation DFG [443159800, CRC 1044, FOR 2359, GRK 214]
- Istituto Nazionale di Fisica Nucleare, Italy
- Ministry of Development of Turkey [DPT2006K-120470]
- National Science and Technology fund
- Olle Engkvist Foundation [200-0605]
- STFC (United Kingdom)
- Knut and Alice Wallenberg Foundation (Sweden) [2016.0157]
- Royal Society, United Kingdom [DH140054, DH160214]
- Swedish Research Council
- U.S. Department of Energy [DE-FG0205ER41374, DE-SC-0012069]
The first amplitude analysis of the singly Cabibbo-suppressed decay D+ -> (K+KS0)pi(0) was performed based on data collected with the BESIII detector, with the dominant component found to be K* (892)(+)K-S(0). The precision of this result has been significantly improved compared to previous measurements and differs from theoretical predictions, potentially contributing to a better understanding of the dynamics behind the decay process.
Based on an e(+)e(-) collision data sample corresponding to an integrated luminosity of 2.93 fb(-1) collected with the BESIII detector at root s = 3.773 GeV, the first amplitude analysis of the singly Cabibbo-suppressed decay D+ -> (K+KS0)pi(0) is performed. From the amplitude analysis, the K* (892)(+) K-S(0) component is found to be dominant with a fraction of (57.1 +/- 2.6 +/- 4.2)%, where the first uncertainty is statistical and the second systematic. In combination with the absolute branching fraction B(D+ -> K+ K-S(0)pi(0)) measured by BESIII, we obtain B(D+ -> K* (892)+K-S(0)) = (8.69 +/- 0.40 +/- 0.64 +/- 0.51) x 10(-3), where the third uncertainty is due to the branching fraction B(D+ -> (K+KS0)pi(0)). The precision of this result is significantly improved compared to the previous measurement. This result also differs from most of theoretical predictions by about 4 sigma, which may help to improve the understanding of the dynamics behind.
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