First measurement of the CKM angle ϕ 3 withS B ± → D(KS0 π + π π 0) K ± decays

The Belle Collaboration

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We present the first model-independent measurement of the CKM unitarity triangle angle ϕ3 using B±→ D(KS0π+ππ0) K± decays, where D indicates either a D0 or D¯ 0 meson. Measurements of the strong-phase difference of the D →KS0π+ππ0 amplitude obtained from CLEO-c data are used as input. This analysis is based on the full Belle data set of 772 × 106BB¯ events collected at the Υ(4S) resonance. We obtain ϕ3 = (5.7−8.8+10.2±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. [Figure not available: see fulltext.]

Original languageEnglish
Article number178
JournalJournal of High Energy Physics
Volume2019
Issue number10
DOIs
Publication statusPublished - 2019 Oct 1

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decay
triangles
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Keywords

  • B physics
  • CKM angle gamma
  • CP violation
  • e+-e- Experiments
  • Flavor physics

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

First measurement of the CKM angle ϕ 3 withS B ± → D(KS0 π + π π 0) K ± decays. / The Belle Collaboration.

In: Journal of High Energy Physics, Vol. 2019, No. 10, 178, 01.10.2019.

Research output: Contribution to journalArticle

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abstract = "We present the first model-independent measurement of the CKM unitarity triangle angle ϕ3 using B±→ D(KS0π+π−π0) K± decays, where D indicates either a D0 or D¯ 0 meson. Measurements of the strong-phase difference of the D →KS0π+π−π0 amplitude obtained from CLEO-c data are used as input. This analysis is based on the full Belle data set of 772 × 106BB¯ events collected at the Υ(4S) resonance. We obtain ϕ3 = (5.7−8.8+10.2±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. [Figure not available: see fulltext.]",
keywords = "B physics, CKM angle gamma, CP violation, e+-e- Experiments, Flavor physics",
author = "{The Belle Collaboration} and Resmi, {P. K.} and J. Libby and K. Trabelsi and I. Adachi and H. Aihara and {Al Said}, S. and Asner, {D. M.} and V. Aulchenko and T. Aushev and V. Babu and I. Badhrees and Bakich, {A. M.} and C. Bele{\~n}o and J. Bennett and V. Bhardwaj and B. Bhuyan and T. Bilka and J. Biswal and A. Bozek and M. Bračko and M. Campajola and D. Červenkov and A. Chen and Cheon, {B. G.} and Cho, {H. E.} and K. Cho and Y. Choi and S. Choudhury and D. Cinabro and S. Cunliffe and N. Dash and {De Nardo}, G. and {Di Capua}, F. and {Di Carlo}, S. and Z. Doležal and Dong, {T. V.} and S. Eidelman and D. Epifanov and Fast, {J. E.} and T. Ferber and Fulsom, {B. G.} and R. Garg and V. Gaur and N. Gabyshev and A. Garmash and A. Giri and P. Goldenzweig and B. Golob and Y. Guan and E. Won",
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AU - Dash, N.

AU - De Nardo, G.

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AU - Di Carlo, S.

AU - Doležal, Z.

AU - Dong, T. V.

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N2 - We present the first model-independent measurement of the CKM unitarity triangle angle ϕ3 using B±→ D(KS0π+π−π0) K± decays, where D indicates either a D0 or D¯ 0 meson. Measurements of the strong-phase difference of the D →KS0π+π−π0 amplitude obtained from CLEO-c data are used as input. This analysis is based on the full Belle data set of 772 × 106BB¯ events collected at the Υ(4S) resonance. We obtain ϕ3 = (5.7−8.8+10.2±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. [Figure not available: see fulltext.]

AB - We present the first model-independent measurement of the CKM unitarity triangle angle ϕ3 using B±→ D(KS0π+π−π0) K± decays, where D indicates either a D0 or D¯ 0 meson. Measurements of the strong-phase difference of the D →KS0π+π−π0 amplitude obtained from CLEO-c data are used as input. This analysis is based on the full Belle data set of 772 × 106BB¯ events collected at the Υ(4S) resonance. We obtain ϕ3 = (5.7−8.8+10.2±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. [Figure not available: see fulltext.]

KW - B physics

KW - CKM angle gamma

KW - CP violation

KW - e+-e- Experiments

KW - Flavor physics

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