Search for CP violation in D(s)+ RIGHTWARDS ARROW K+ KS0h+h- (h = K, π) decays and observation of the Cabibbo-suppressed decay Ds+ RIGHTWARDS ARROW K+ K- KS0 π+

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10476458" target="_blank" >RIV/00216208:11320/23:10476458 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=JNOgrr-RZC" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=JNOgrr-RZC</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.108.L111102" target="_blank" >10.1103/PhysRevD.108.L111102</a>

Result language
angličtina
Original language name
Search for CP violation in D(s)+ RIGHTWARDS ARROW K+ KS0h+h- (h = K, π) decays and observation of the Cabibbo-suppressed decay Ds+ RIGHTWARDS ARROW K+ K- KS0 π+
Original language description
We search for CP violation by measuring a T-odd asymmetry in the Cabibbo-suppressed D+ -> (K+KS0)pi(+)pi(-) decay, and in the Cabibbo-favored D-s(+)->(K+KS0)pi(+)pi(-) and D+->(K+K-KS0)pi(+) decays. We use 980 fb(-1) of data collected by the Belle detector running at the KEKB asymmetric-energy e(+)e(-) collider. The CP-violating T-odd parameter a(CP)(T-odd) is measured to be a(CP)(T-odd)(D+->(K+KS0)pi(+)pi(-))=(0.34 +/- 0.87 +/- 0.32)%, a(CP)(T-odd)(D-s(+)->(K+KS0)pi(+)pi(-))=(-0.46 +/- 0.63 +/- 0.38)%, and a(CP)(T-odd)(D+->(K+K-KS0)pi(+))=(-3.34 +/- 2.66 +/- 0.35)%, where the first uncertainty is statistical and the second is systematic. We also report the first observation of the Cabibbo-suppressed decay D-s(+)->(K+K-KS0)pi(+). The branching fraction is measured relative to that of the analogous Cabibbo-favored decay: B(D-s(+)->(K+K-KS0)pi(+))/B(D-s(+)->(K+KS0)pi(+)pi(-))=(1.36 +/- 0.15 +/- 0.04)%.
Czech name
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Czech description
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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
<a href="/en/project/GA22-18469S" target="_blank" >GA22-18469S: Studies of the Beyond Standard Model phenomena in the flavor sector with the Belle II Experiment</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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