First measurement of the CKM angle ϕ3 withS B±→ D( K0S π+π−π0) K± decays

Resmi, P K and Libby, J and Giri, Anjan Kumar and et al, . (2019) First measurement of the CKM angle ϕ3 withS B±→ D( K0S π+π−π0) K± decays. Journal of High Energy Physics. ISSN 1029-8479

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Abstract

We present the first model-independent measurement of the CKM unitarity triangle angle ϕ3 using B±→ D( K0S π+π−π0) K± decays, where D indicates either a D0 or D¯¯¯¯ 0 meson. Measurements of the strong-phase difference of the D → K0S π+π−π0 amplitude obtained from CLEO-c data are used as input. This analysis is based on the full Belle data set of 772 × 106B B¯¯¯¯ events collected at the Υ(4S) resonance. We obtain ϕ3 = ( 5.7+10.2−8.8 ±3.5±5.7)° and the suppressed amplitude ratio rB = 0.323±0.147±0.023±0.051. Here the first uncertainty is statistical, the second is the experimental systematic, and the third is due to the precision of the strong-phase parameters measured from CLEO-c data. The 95% confidence interval on ϕ3 is (−29.7, 109.5)°, which is consistent with the current world average.

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IITH Creators:
IITH CreatorsORCiD
Giri, Anjan KumarUNSPECIFIED
Item Type: Article
Subjects: Physics
Divisions: Department of Physics
Depositing User: Team Library
Date Deposited: 28 Oct 2019 04:27
Last Modified: 28 Oct 2019 04:27
URI: http://raiith.iith.ac.in/id/eprint/6855
Publisher URL: https://doi.org/10.1007/JHEP10(2019)178
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