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

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dc.contributor.authorYusa, Y.
dc.contributor.authorAihara, H.
dc.contributor.authorAl, Said, S.
dc.contributor.authorAsner, D. M.
dc.contributor.authorMizuk, R.
dc.date.accessioned2024-11-20T09:28:35Z
dc.date.available2024-11-20T09:28:35Z
dc.date.issued2019
dc.description.abstract© 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 3 . 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.
dc.identifier.citationMeasurement of time-dependent CP violation in B0 → KS0 π0π0 decays / Yusa, Y. [et al.] // Physical Review D. - 2019. - 99. - № 1. - 10.1103/PhysRevD.99.011102
dc.identifier.doi10.1103/PhysRevD.99.011102
dc.identifier.urihttps://www.doi.org/10.1103/PhysRevD.99.011102
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85061091385&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000456035800002
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/16531
dc.relation.ispartofPhysical Review D
dc.titleMeasurement of time-dependent CP violation in B0 → KS0 π0π0 decays
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue1
oaire.citation.volume99
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