Measurement of the branching fraction and time-dependent CP asymmetry for B0 →j /ψπ0 decays

Belle Collaboration

doi:10.1103/PhysRevD.98.112008

Measurement of the branching fraction and time-dependent CP asymmetry for B0 →j /ψπ0 decays

Belle Collaboration

Department of Physics

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

We measure the branching fraction and time-dependent CP-violating asymmetry for B0→J/ψπ0 decays using a data sample of 711 fb-1 collected on the (4S) resonance by the Belle experiment running at the KEKB e+e- collider. The branching fraction is measured to be B(B0→J/ψπ0)=[1.62±0.11(stat)±0.06(syst)]×10-5, which is the most precise measurement to date. The measured CP asymmetry parameters are S=-0.59±0.19(stat)±0.03(syst) and A=-0.15±0.14(stat)+0.04-0.03(syst). The mixing-induced CP asymmetry (S) differs from the case of no CP violation by 3.0 standard deviations, and the direct CP asymmetry (A) is consistent with zero.

Original language	English
Article number	112008
Journal	Physical Review D
Volume	98
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevD.98.112008
Publication status	Published - 2018 Dec 1

Bibliographical note

Publisher Copyright:
© 2018 authors. Published by the American Physical Society.

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1103/PhysRevD.98.112008

Cite this

@article{7b45078fc56e4c98b283419abd585eb1,

title = "Measurement of the branching fraction and time-dependent CP asymmetry for B0 →j /ψπ0 decays",

abstract = "We measure the branching fraction and time-dependent CP-violating asymmetry for B0→J/ψπ0 decays using a data sample of 711 fb-1 collected on the (4S) resonance by the Belle experiment running at the KEKB e+e- collider. The branching fraction is measured to be B(B0→J/ψπ0)=[1.62±0.11(stat)±0.06(syst)]×10-5, which is the most precise measurement to date. The measured CP asymmetry parameters are S=-0.59±0.19(stat)±0.03(syst) and A=-0.15±0.14(stat)+0.04-0.03(syst). The mixing-induced CP asymmetry (S) differs from the case of no CP violation by 3.0 standard deviations, and the direct CP asymmetry (A) is consistent with zero.",

author = "\{Belle Collaboration\} and B. Pal and Schwartz, \{A. J.\} and H. Aihara and \{Al Said\}, S. and Asner, \{D. M.\} and H. Atmacan and V. Aulchenko and T. Aushev and R. Ayad and I. Badhrees and S. Bahinipati and V. Bansal and P. Behera and C. Bele{\~n}o and B. Bhuyan and T. Bilka and J. Biswal and A. Bozek and M. Bra{\v c}ko and L. Cao and D. {\v C}ervenkov and V. Chekelian and A. Chen and Cheon, \{B. G.\} and K. Chilikin and K. Cho and Y. Choi and S. Choudhury and D. Cinabro and S. Cunliffe and N. Dash and \{Di Carlo\}, S. and Z. Dole{\v Z}al and S. Eidelman and D. Epifanov and Fast, \{J. E.\} and Fulsom, \{B. G.\} and R. Garg and V. Gaur and A. Garmash and M. Gelb and A. Giri and P. Goldenzweig and B. Golob and Y. Guan and T. Hara and K. Hayasaka and H. Hayashii and T. Higuchi and E. Won",

note = "Publisher Copyright: {\textcopyright} 2018 authors. Published by the American Physical Society.",

year = "2018",

month = dec,

day = "1",

doi = "10.1103/PhysRevD.98.112008",

language = "English",

volume = "98",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "11",

}

TY - JOUR

T1 - Measurement of the branching fraction and time-dependent CP asymmetry for B0 →j /ψπ0 decays

AU - Belle Collaboration

AU - Pal, B.

AU - Schwartz, A. J.

AU - Aihara, H.

AU - Al Said, S.

AU - Asner, D. M.

AU - Atmacan, H.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Ayad, R.

AU - Badhrees, I.

AU - Bahinipati, S.

AU - Bansal, V.

AU - Behera, P.

AU - Beleño, C.

AU - Bhuyan, B.

AU - Bilka, T.

AU - Biswal, J.

AU - Bozek, A.

AU - Bračko, M.

AU - Cao, L.

AU - Červenkov, D.

AU - Chekelian, V.

AU - Chen, A.

AU - Cheon, B. G.

AU - Chilikin, K.

AU - Cho, K.

AU - Choi, Y.

AU - Choudhury, S.

AU - Cinabro, D.

AU - Cunliffe, S.

AU - Dash, N.

AU - Di Carlo, S.

AU - DoleŽal, Z.

AU - Eidelman, S.

AU - Epifanov, D.

AU - Fast, J. E.

AU - Fulsom, B. G.

AU - Garg, R.

AU - Gaur, V.

AU - Garmash, A.

AU - Gelb, M.

AU - Giri, A.

AU - Goldenzweig, P.

AU - Golob, B.

AU - Guan, Y.

AU - Hara, T.

AU - Hayasaka, K.

AU - Hayashii, H.

AU - Higuchi, T.

AU - Won, E.

PY - 2018/12/1

Y1 - 2018/12/1

N2 - We measure the branching fraction and time-dependent CP-violating asymmetry for B0→J/ψπ0 decays using a data sample of 711 fb-1 collected on the (4S) resonance by the Belle experiment running at the KEKB e+e- collider. The branching fraction is measured to be B(B0→J/ψπ0)=[1.62±0.11(stat)±0.06(syst)]×10-5, which is the most precise measurement to date. The measured CP asymmetry parameters are S=-0.59±0.19(stat)±0.03(syst) and A=-0.15±0.14(stat)+0.04-0.03(syst). The mixing-induced CP asymmetry (S) differs from the case of no CP violation by 3.0 standard deviations, and the direct CP asymmetry (A) is consistent with zero.

AB - We measure the branching fraction and time-dependent CP-violating asymmetry for B0→J/ψπ0 decays using a data sample of 711 fb-1 collected on the (4S) resonance by the Belle experiment running at the KEKB e+e- collider. The branching fraction is measured to be B(B0→J/ψπ0)=[1.62±0.11(stat)±0.06(syst)]×10-5, which is the most precise measurement to date. The measured CP asymmetry parameters are S=-0.59±0.19(stat)±0.03(syst) and A=-0.15±0.14(stat)+0.04-0.03(syst). The mixing-induced CP asymmetry (S) differs from the case of no CP violation by 3.0 standard deviations, and the direct CP asymmetry (A) is consistent with zero.

UR - https://www.scopus.com/pages/publications/85059442764

U2 - 10.1103/PhysRevD.98.112008

DO - 10.1103/PhysRevD.98.112008

M3 - Article

AN - SCOPUS:85059442764

SN - 2470-0010

VL - 98

JO - Physical Review D

JF - Physical Review D

IS - 11

M1 - 112008

ER -

Measurement of the branching fraction and time-dependent CP asymmetry for B0 →j /ψπ0 decays

Abstract

Bibliographical note

ASJC Scopus subject areas

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