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Measurement of branching fraction and direct CP asymmetry in charmless B+ -˃ K+ K- pi(+) decays at Belle

Title
Measurement of branching fraction and direct CP asymmetry in charmless B+ -˃ K+ K- pi(+) decays at Belle
Author
천병구
Keywords
DETECTOR; PACKAGE
Issue Date
2017-08
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v. 96, no. 3, Article no. 031101
Abstract
We report a study of the charmless hadronic decay of the charged B meson to the three-body final state K+K-pi(+). The results are based on a data sample that contains 772 x 10(6) B (B) over bar pairs collected at the Y (4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The measured inclusive branching fraction and direct CP asymmetry are (5.38 +/- 0.40 +/- 0.35) x 10(-6) and -0.170 +/- 0.073 +/- 0.017, respectively, where the first uncertainties are statistical and the second are systematic. The K+K- invariant mass distribution of the signal candidates shows an excess in the region below 1.5 GeV/c(2), which is consistent with the previous studies from BABAR and LHCb. In addition, strong evidence of a large direct CP asymmetry is found in the low K+K- invariant-mass region.
URI
https://journals.aps.org/prd/abstract/10.1103/PhysRevD.96.031101https://repository.hanyang.ac.kr/handle/20.500.11754/115069
ISSN
2470-0010; 2470-0029
DOI
10.1103/PhysRevD.96.031101
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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