Measurement of the time-integrated CP asymmetry in D0 → KS0 KS0 decays using opposite-side flavor tagging at Belle and Belle II

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F25%3A10510173" target="_blank" >RIV/00216208:11320/25:10510173 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=6eD5igg4XB" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=6eD5igg4XB</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/8x1h-39dp" target="_blank" >10.1103/8x1h-39dp</a>

Result language
angličtina
Original language name
Measurement of the time-integrated CP asymmetry in D0 → KS0 KS0 decays using opposite-side flavor tagging at Belle and Belle II
Original language description
We measure the time-integrated CP asymmetry in D-0 -> (KSKS0)-K-0 decays reconstructed in e(+)e(-) -> c (c) over bar events collected by the Belle and Belle II experiments. The corresponding data samples have integrated luminosities of 980 and 428 fb(-1), respectively. To infer the flavor of the D-0 meson, we exploit the correlation between the flavor of the reconstructed decay and the electric charges of particles reconstructed in the rest of the e(+)e(-) -> c (c) over bar event. This results in a sample which is independent from any other previously used at Belle or Belle II. The result, A(CP)(D-0 -> (KSKS0)-K-0) = (1.3 +/- 2.0 +/- 0.2)%, where the first uncertainty is statistical and the second systematic, is consistent with previous determinations and with CP symmetry.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10300 - Physical sciences

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)