Measurement of CP asymmetries in B0 →K⁰sK⁰sK⁰s decays at Belle II
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(Published version)
Date
2024
Authors
Adachi, I.
Aggarwal, L.
Ahmed, H.
Aihara, H.
Akopov, N.
Aloisio, A.
Anh Ky, N.
Asner, D.M.
Atmacan, H.
Aushev, T.
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Journal article
Citation
Physical Review D (particles, fields, gravitation, and cosmology), 2024; 109(11):112020-1-112020-11
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Belle II Collaboration
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Abstract
We report a measurement of decay-time-dependent charge-parity (CP) asymmetries in B0 → K0 SK0 SK0 S decays. We use 387 × 106 BB¯ pairs collected at the ϒð4SÞ resonance with the Belle II detector at the SuperKEKB asymmetric-energy electron-positron collider. We reconstruct 220 signal events and extract the CP-violating parameters S and C from a fit to the distribution of the decay-time difference between the two B mesons. The resulting confidence region is consistent with previous measurements in B0 → K0 SK0 SK0 S and B0 → ðcc¯ÞK0 decays and with predictions based on the standard model.
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Published by the American Physical Society under the terms of the 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 SCOAP3 .
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http://purl.org/au-research/grants/arc/DP200101792
http://purl.org/au-research/grants/arc/DP210101900
http://purl.org/au-research/grants/arc/DP210102831
http://purl.org/au-research/grants/arc/DE220100462
http://purl.org/au-research/grants/arc/LE210100098
http://purl.org/au-research/grants/arc/LE230100085
http://purl.org/au-research/grants/arc/DP210101900
http://purl.org/au-research/grants/arc/DP210102831
http://purl.org/au-research/grants/arc/DE220100462
http://purl.org/au-research/grants/arc/LE210100098
http://purl.org/au-research/grants/arc/LE230100085