Search for CP Violation and Measurement of the Branching Fraction in the Decay D0 → KS0 KS0

Belle Collaboration

doi:10.1103/PhysRevLett.119.171801

Search for CP Violation and Measurement of the Branching Fraction in the Decay D0 → KS0 KS0

Belle Collaboration

Indian Institute of Technology Bhubaneswar
Indian Institute of Science Education and Research Mohali
The Graduate University for Advanced Studies
High Energy Accelerator Research Organization, Tsukuba
The University of Tokyo
King Abdulaziz University
University of Tabuk
Pacific Northwest National Laboratory
RAS - Budker Institute of Nuclear Physics
Novosibirsk State University
Moscow Institute of Physics and Technology
Tata Institute of Fundamental Research
King Abdulaziz City for Science and Technology
The University of Sydney
University of Melbourne
Indian Institute of Technology Guwahati
Jožef Stefan Institute
Wayne State University
H. Niewodniczanski Institute of Nuclear Physics
University of Maribor
Austrian Academy of Sciences
University of Hawai'i at Mānoa
Charles University
Fu Jen Catholic University
Max Planck Institute for Physics (Werner Heisenberg Institute)
National Central University
Hanyang University
RAS - P.N. Lebedev Physics Institute
Moscow Engineering Physics Institute
Korea Institute of Science and Technology Information
Sungkyunkwan University
German Electron Synchrotron
Virginia Polytechnic Institute and State University

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

51 Scopus citations

Abstract

We report a study of the decay D0→KS0KS0 using 921 fb-1 of data collected at or near the (4S) and (5S) resonances with the Belle detector at the KEKB asymmetric energy e+e- collider. The measured time-integrated CP asymmetry is ACP(D0→KS0KS0)=(-0.02±1.53±0.02±0.17)%, and the branching fraction is B(D0→KS0KS0)=(1.321±0.023±0.036±0.044)×10-4, where the first uncertainty is statistical, the second is systematic, and the third is due to the normalization mode (D0→KS0π0). These results are significantly more precise than previous measurements available for this mode. The ACP measurement is consistent with the standard model expectation.

Original language	English
Article number	171801
Journal	Physical Review Letters
Volume	119
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.119.171801
State	Published - 23 Oct 2017

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10.1103/PhysRevLett.119.171801

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@article{5ef297d7ea2c4d8e9d3db627a76a862d,

title = "Search for CP Violation and Measurement of the Branching Fraction in the Decay D0 → KS0 KS0",

abstract = "We report a study of the decay D0→KS0KS0 using 921 fb-1 of data collected at or near the (4S) and (5S) resonances with the Belle detector at the KEKB asymmetric energy e+e- collider. The measured time-integrated CP asymmetry is ACP(D0→KS0KS0)=(-0.02±1.53±0.02±0.17)\%, and the branching fraction is B(D0→KS0KS0)=(1.321±0.023±0.036±0.044)×10-4, where the first uncertainty is statistical, the second is systematic, and the third is due to the normalization mode (D0→KS0π0). These results are significantly more precise than previous measurements available for this mode. The ACP measurement is consistent with the standard model expectation.",

author = "\{Belle Collaboration\} and N. Dash and S. Bahinipati and V. Bhardwaj and K. Trabelsi and I. Adachi and H. Aihara and \{Al Said\}, S. and Asner, \{D. M.\} and V. Aulchenko and T. Aushev and R. Ayad and V. Babu and I. Badhrees and Bakich, \{A. M.\} and V. Bansal and E. Barberio and B. Bhuyan and J. Biswal and A. Bobrov and A. Bondar and G. Bonvicini and A. Bozek and M. Bra{\v c}ko and F. Breibeck and Browder, \{T. E.\} and D. {\v C}ervenkov and Chang, \{M. C.\} and V. Chekelian and A. Chen and Cheon, \{B. G.\} and K. Chilikin and K. Cho and Y. Choi and D. Cinabro and \{Di Carlo\}, S. and Z. Dole{\v Z}al and Z. Dr{\'a}sal and D. Dutta and S. Eidelman and D. Epifanov and H. Farhat and Fast, \{J. E.\} and T. Ferber and Fulsom, \{B. G.\} and V. Gaur and N. Gabyshev and A. Garmash and R. Gillard and J. Haba and Kim, \{H. J.\}",

note = "Publisher Copyright: {\textcopyright} 2017 American Physical Society.",

year = "2017",

month = oct,

day = "23",

doi = "10.1103/PhysRevLett.119.171801",

language = "English",

volume = "119",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "17",

}

TY - JOUR

T1 - Search for CP Violation and Measurement of the Branching Fraction in the Decay D0 → KS0 KS0

AU - Belle Collaboration

AU - Dash, N.

AU - Bahinipati, S.

AU - Bhardwaj, V.

AU - Trabelsi, K.

AU - Adachi, I.

AU - Aihara, H.

AU - Al Said, S.

AU - Asner, D. M.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Ayad, R.

AU - Babu, V.

AU - Badhrees, I.

AU - Bakich, A. M.

AU - Bansal, V.

AU - Barberio, E.

AU - Bhuyan, B.

AU - Biswal, J.

AU - Bobrov, A.

AU - Bondar, A.

AU - Bonvicini, G.

AU - Bozek, A.

AU - Bračko, M.

AU - Breibeck, F.

AU - Browder, T. E.

AU - Červenkov, D.

AU - Chang, M. C.

AU - Chekelian, V.

AU - Chen, A.

AU - Cheon, B. G.

AU - Chilikin, K.

AU - Cho, K.

AU - Choi, Y.

AU - Cinabro, D.

AU - Di Carlo, S.

AU - DoleŽal, Z.

AU - Drásal, Z.

AU - Dutta, D.

AU - Eidelman, S.

AU - Epifanov, D.

AU - Farhat, H.

AU - Fast, J. E.

AU - Ferber, T.

AU - Fulsom, B. G.

AU - Gaur, V.

AU - Gabyshev, N.

AU - Garmash, A.

AU - Gillard, R.

AU - Haba, J.

AU - Kim, H. J.

PY - 2017/10/23

Y1 - 2017/10/23

N2 - We report a study of the decay D0→KS0KS0 using 921 fb-1 of data collected at or near the (4S) and (5S) resonances with the Belle detector at the KEKB asymmetric energy e+e- collider. The measured time-integrated CP asymmetry is ACP(D0→KS0KS0)=(-0.02±1.53±0.02±0.17)%, and the branching fraction is B(D0→KS0KS0)=(1.321±0.023±0.036±0.044)×10-4, where the first uncertainty is statistical, the second is systematic, and the third is due to the normalization mode (D0→KS0π0). These results are significantly more precise than previous measurements available for this mode. The ACP measurement is consistent with the standard model expectation.

AB - We report a study of the decay D0→KS0KS0 using 921 fb-1 of data collected at or near the (4S) and (5S) resonances with the Belle detector at the KEKB asymmetric energy e+e- collider. The measured time-integrated CP asymmetry is ACP(D0→KS0KS0)=(-0.02±1.53±0.02±0.17)%, and the branching fraction is B(D0→KS0KS0)=(1.321±0.023±0.036±0.044)×10-4, where the first uncertainty is statistical, the second is systematic, and the third is due to the normalization mode (D0→KS0π0). These results are significantly more precise than previous measurements available for this mode. The ACP measurement is consistent with the standard model expectation.

UR - https://www.scopus.com/pages/publications/85032448959

U2 - 10.1103/PhysRevLett.119.171801

DO - 10.1103/PhysRevLett.119.171801

M3 - Article

C2 - 29219447

AN - SCOPUS:85032448959

SN - 0031-9007

VL - 119

JO - Physical Review Letters

JF - Physical Review Letters

IS - 17

M1 - 171801

ER -

Search for CP Violation and Measurement of the Branching Fraction in the Decay D0 → KS0 KS0

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