Search for direct CP violation in B→Kπ decays

Belle Collaboration

Research output: Contribution to journal › Article

18 Citations (Scopus)

Abstract

We search for direct CP violation in flavor specific B → Kπ decays by measuring the rate asymmetry between charge conjugate modes. The search is performed on a data sample of 11.1 × 106 BB events recorded on the Y(4S) resonance by the Belle experiment at KEKB. We measure 90% confidence intervals in the partial rate asymmetry ACP of -0.25<ACP(K∓π±)<0.37, -0.40<ACP(K∓π0)<0.36, and -0.53 <A CP (K0π∓)<0.82. By combining the K∓π± and K∓π0 final states, we conclude that -0.22 <ACP(K∓(π± + π0))<0.25 at the 90% confidence level.

Original languageEnglish
Article number071101
JournalPhysical Review D
Volume64
Issue number7
DOIs
Publication statusPublished - 2001 Jan 1
Externally publishedYes

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CP violation
confidence
asymmetry
decay
intervals

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Cite this

Search for direct CP violation in B→Kπ decays. / Belle Collaboration.

In: Physical Review D, Vol. 64, No. 7, 071101, 01.01.2001.

Research output: Contribution to journal › Article

Belle Collaboration 2001, 'Search for direct CP violation in B→Kπ decays', Physical Review D, vol. 64, no. 7, 071101. https://doi.org/10.1103/PhysRevD.64.071101
Belle Collaboration. Search for direct CP violation in B→Kπ decays. Physical Review D. 2001 Jan 1;64(7). 071101. https://doi.org/10.1103/PhysRevD.64.071101
Belle Collaboration. / Search for direct CP violation in B→Kπ decays. In: Physical Review D. 2001 ; Vol. 64, No. 7.
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title = "Search for direct CP violation in B→Kπ decays",
abstract = "We search for direct CP violation in flavor specific B → Kπ decays by measuring the rate asymmetry between charge conjugate modes. The search is performed on a data sample of 11.1 × 106 BB events recorded on the Y(4S) resonance by the Belle experiment at KEKB. We measure 90{\%} confidence intervals in the partial rate asymmetry ACP of -0.25<ACP(K∓π±)<0.37, -0.40<ACP(K∓π0)<0.36, and -0.53 <A CP (K0π∓)<0.82. By combining the K∓π± and K∓π0 final states, we conclude that -0.22 <ACP(K∓(π± + π0))<0.25 at the 90{\%} confidence level.",
author = "{Belle Collaboration} and K. Abe and K. Abe and R. Abe and I. Adachi and Ahn, {Byoung Sup} and H. Aihara and M. Akatsu and Y. Asano and T. Aso and V. Aulchenko and T. Aushev and Bakich, {A. M.} and E. Banas and S. Behari and Behera, {P. K.} and A. Bondar and A. Bozek and Browder, {T. E.} and Casey, {B. C.K.} and P. Chang and Y. Chao and Chen, {K. F.} and Cheon, {B. G.} and R. Chistov and Choi, {S. K.} and Y. Choi and Dong, {L. Y.} and J. Dragic and A. Drutskoy and S. Eidelman and R. Enomoto and F. Fang and H. Fujii and C. Fukunaga and M. Fukushima and A. Garmash and A. Gordon and K. Gotow and R. Guo and J. Haba and H. Hamasaki and K. Hanagaki and F. Handa and K. Hara and T. Hara and Hastings, {N. C.} and H. Hayashii and M. Hazumi and Heenan, {E. M.} and Eunil Won",
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T1 - Search for direct CP violation in B→Kπ decays

AU - Belle Collaboration

AU - Abe, K.

AU - Abe, K.

AU - Abe, R.

AU - Adachi, I.

AU - Ahn, Byoung Sup

AU - Aihara, H.

AU - Akatsu, M.

AU - Asano, Y.

AU - Aso, T.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Bakich, A. M.

AU - Banas, E.

AU - Behari, S.

AU - Behera, P. K.

AU - Bondar, A.

AU - Bozek, A.

AU - Browder, T. E.

AU - Casey, B. C.K.

AU - Chang, P.

AU - Chao, Y.

AU - Chen, K. F.

AU - Cheon, B. G.

AU - Chistov, R.

AU - Choi, S. K.

AU - Choi, Y.

AU - Dong, L. Y.

AU - Dragic, J.

AU - Drutskoy, A.

AU - Eidelman, S.

AU - Enomoto, R.

AU - Fang, F.

AU - Fujii, H.

AU - Fukunaga, C.

AU - Fukushima, M.

AU - Garmash, A.

AU - Gordon, A.

AU - Gotow, K.

AU - Guo, R.

AU - Haba, J.

AU - Hamasaki, H.

AU - Hanagaki, K.

AU - Handa, F.

AU - Hara, K.

AU - Hara, T.

AU - Hastings, N. C.

AU - Hayashii, H.

AU - Hazumi, M.

AU - Heenan, E. M.

AU - Won, Eunil

PY - 2001/1/1

Y1 - 2001/1/1

N2 - We search for direct CP violation in flavor specific B → Kπ decays by measuring the rate asymmetry between charge conjugate modes. The search is performed on a data sample of 11.1 × 106 BB events recorded on the Y(4S) resonance by the Belle experiment at KEKB. We measure 90% confidence intervals in the partial rate asymmetry ACP of -0.25<ACP(K∓π±)<0.37, -0.40<ACP(K∓π0)<0.36, and -0.53 <A CP (K0π∓)<0.82. By combining the K∓π± and K∓π0 final states, we conclude that -0.22 <ACP(K∓(π± + π0))<0.25 at the 90% confidence level.

AB - We search for direct CP violation in flavor specific B → Kπ decays by measuring the rate asymmetry between charge conjugate modes. The search is performed on a data sample of 11.1 × 106 BB events recorded on the Y(4S) resonance by the Belle experiment at KEKB. We measure 90% confidence intervals in the partial rate asymmetry ACP of -0.25<ACP(K∓π±)<0.37, -0.40<ACP(K∓π0)<0.36, and -0.53 <A CP (K0π∓)<0.82. By combining the K∓π± and K∓π0 final states, we conclude that -0.22 <ACP(K∓(π± + π0))<0.25 at the 90% confidence level.

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U2 - 10.1103/PhysRevD.64.071101

DO - 10.1103/PhysRevD.64.071101

M3 - Article

VL - 64

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 0556-2821

IS - 7

M1 - 071101

ER -

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