Measurement of time-dependent CP violation in B0 → KS0 π0π0 decays

Belle Collaboration

doi:10.1103/PhysRevD.99.011102

Measurement of time-dependent CP violation in B0 → KS0 π0π0 decays

Belle Collaboration

Chair of Physics I

Niigata University
University of Tokyo
Faculty of Sciences, King Abdulaziz University
University of Tabuk
Brookhaven National Laboratory
University of South Carolina
Budker Institute of Nuclear Physics (SB RAS)
Novosibirsk State University
Moscow Institute of Physics and Technology
Tata Institute of Fundamental Research, Mumbai
King Abdulaziz City for Science and Technology
Indian Institute of Technology Bhubaneswar
University of Sydney
Pacific Northwest National Laboratory
Indian Institute of Technology Madras
Indian Institute of Science Education and Research Mohali
Indian Institute of Technology Guwahati
Jožef Stefan Institute
Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences
University of Maribor
University of Hawaii
Humanoid Technologies Lab (H2T)
Charles University
Max-Planck-Institut für Physik
National Central University
Hanyang University
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
Gyeongsang National University
Sungkyunkwan University
Wayne State University
Deutsches Elektronen-Synchrotron (DESY)
Laboratoire de l'Accélérateur Linéaire
KEK and Graduate University for Advanced Studies (Sokendai)
High Energy Accelerator Research Organization (KEK)
Panjab University
Virginia Polytechnic Institute and State University
Indian Institute of Technology Hyderabad
Univ. of Ljubljana
Indiana University Bloomington
Nara Women's University
Nagoya University
Tohoku University
Osaka Prefecture University
Beihang University
Chonnam National University
Kyungpook National University
Soongsil University
Korea University
Univ. of Cincinnati
University of Mississippi
University of Munich
Punjab Agricultural University
Yonsei University
Justus-Liebig-Universität Gießen
Institute of High Energy Physics Chinese Academy of Science
Beijing University
Fudan University
University of Miyazaki
INFN Sezione di Napoli
Università di Napoli Federico II
National Research Nuclear University MEPhI
University of Pittsburgh
Toho University
Nippon Dental University
Luther College, Decorah
Forschungszentrum Jülich (FZJ)
EPFL
Biodonostia Health Research Institute-CIBERNED-UPV-EHU
Basque Foundation for Science
Österreichische Akademie der Wissenschaften
Yamagata University
University of Melbourne
Tokyo Institute of Technology
National Taiwan University
Gifu University
Tokyo Metropolitan University
Riken
Showa Pharmaceutical University
INFN Sez. di Torino
Japan Atomic Energy Agency
Duke University
National United University Taiwan
University of Science and Technology of China

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Abstract

We report a measurement of time-dependent CP violation in B0→KS0π0π0 decays using a data sample of 772×106 BB pairs collected by the Belle experiment running at the ?(4S) resonance at the KEKB e+e- collider. This decay proceeds mainly via a b→sdd "penguin" amplitude. The results are sin2φ1eff=0.92-0.31+0.27 (stat.) ±0.11 (syst.) and A=0.28±0.21 (stat.) ±0.04 (syst.), which are the most precise measurements of CP violation in this decay mode to date. The value for the CP-violating parameter sin2φ1eff is consistent with that obtained using decay modes proceeding via a b→ccs "tree" amplitude.

Original language	English
Article number	011102
Journal	Physical Review D
Volume	99
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevD.99.011102
State	Published - 1 Jan 2019

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10.1103/PhysRevD.99.011102

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@article{68cd090f5bec46e0b17e0fd693b4c715,

title = "Measurement of time-dependent CP violation in B0 → KS0 π0π0 decays",

abstract = "We report a measurement of time-dependent CP violation in B0→KS0π0π0 decays using a data sample of 772×106 BB pairs collected by the Belle experiment running at the ?(4S) resonance at the KEKB e+e- collider. This decay proceeds mainly via a b→sdd {"}penguin{"} amplitude. The results are sin2φ1eff=0.92-0.31+0.27 (stat.) ±0.11 (syst.) and A=0.28±0.21 (stat.) ±0.04 (syst.), which are the most precise measurements of CP violation in this decay mode to date. The value for the CP-violating parameter sin2φ1eff is consistent with that obtained using decay modes proceeding via a b→ccs {"}tree{"} amplitude.",

author = "\{Belle Collaboration\} and Y. Yusa and H. Aihara and \{Al Said\}, S. and Asner, \{D. M.\} and H. Atmacan and V. Aulchenko and T. Aushev and R. Ayad and V. Babu and I. Badhrees and S. Bahinipati and Bakich, \{A. M.\} and V. Bansal and P. Behera and V. Bhardwaj and B. Bhuyan and J. Biswal and A. Bozek and M. Bra{\v c}ko and Browder, \{T. E.\} and L. Cao and D. {\v C}ervenkov and V. Chekelian and A. Chen and Cheon, \{B. G.\} and K. Chilikin and Choi, \{S. K.\} and Y. Choi and D. Cinabro and S. Cunliffe and N. Dash and \{Di Carlo\}, S. and Dong, \{T. V.\} and Z. Dr{\'a}sal and S. Eidelman and D. Epifanov and Fast, \{J. E.\} and Fulsom, \{B. G.\} and R. Garg and V. Gaur and A. Garmash and A. Giri and P. Goldenzweig and B. Golob and Y. Guan and J. Haba and K. Hayasaka and H. Hayashii and S. Hirose and S. Paul",

note = "Publisher Copyright: {\textcopyright} 2019 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the »https://creativecommons.org/licenses/by/4.0/» Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP.",

year = "2019",

month = jan,

day = "1",

doi = "10.1103/PhysRevD.99.011102",

language = "English",

volume = "99",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

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TY - JOUR

T1 - Measurement of time-dependent CP violation in B0 → KS0 π0π0 decays

AU - Belle Collaboration

AU - Yusa, Y.

AU - Aihara, H.

AU - Al Said, S.

AU - Asner, D. M.

AU - Atmacan, H.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Ayad, R.

AU - Babu, V.

AU - Badhrees, I.

AU - Bahinipati, S.

AU - Bakich, A. M.

AU - Bansal, V.

AU - Behera, P.

AU - Bhardwaj, V.

AU - Bhuyan, B.

AU - Biswal, J.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Cao, L.

AU - Červenkov, D.

AU - Chekelian, V.

AU - Chen, A.

AU - Cheon, B. G.

AU - Chilikin, K.

AU - Choi, S. K.

AU - Choi, Y.

AU - Cinabro, D.

AU - Cunliffe, S.

AU - Dash, N.

AU - Di Carlo, S.

AU - Dong, T. V.

AU - Drásal, 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 - Giri, A.

AU - Goldenzweig, P.

AU - Golob, B.

AU - Guan, Y.

AU - Haba, J.

AU - Hayasaka, K.

AU - Hayashii, H.

AU - Hirose, S.

AU - Paul, S.

N1 - Publisher Copyright: © 2019 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the »https://creativecommons.org/licenses/by/4.0/» Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP.

PY - 2019/1/1

Y1 - 2019/1/1

N2 - We report a measurement of time-dependent CP violation in B0→KS0π0π0 decays using a data sample of 772×106 BB pairs collected by the Belle experiment running at the ?(4S) resonance at the KEKB e+e- collider. This decay proceeds mainly via a b→sdd "penguin" amplitude. The results are sin2φ1eff=0.92-0.31+0.27 (stat.) ±0.11 (syst.) and A=0.28±0.21 (stat.) ±0.04 (syst.), which are the most precise measurements of CP violation in this decay mode to date. The value for the CP-violating parameter sin2φ1eff is consistent with that obtained using decay modes proceeding via a b→ccs "tree" amplitude.

AB - We report a measurement of time-dependent CP violation in B0→KS0π0π0 decays using a data sample of 772×106 BB pairs collected by the Belle experiment running at the ?(4S) resonance at the KEKB e+e- collider. This decay proceeds mainly via a b→sdd "penguin" amplitude. The results are sin2φ1eff=0.92-0.31+0.27 (stat.) ±0.11 (syst.) and A=0.28±0.21 (stat.) ±0.04 (syst.), which are the most precise measurements of CP violation in this decay mode to date. The value for the CP-violating parameter sin2φ1eff is consistent with that obtained using decay modes proceeding via a b→ccs "tree" amplitude.

UR - https://www.scopus.com/pages/publications/85061091385

U2 - 10.1103/PhysRevD.99.011102

DO - 10.1103/PhysRevD.99.011102

M3 - Article

AN - SCOPUS:85061091385

SN - 2470-0010

VL - 99

JO - Physical Review D

JF - Physical Review D

IS - 1

M1 - 011102

ER -

Measurement of time-dependent CP violation in B0 → KS0 π0π0 decays

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