Measurement of the difference in CP-violating asymmetries in D-0 -> K+K- and D-0 -> pi(+)pi(-) decays at CDF

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F12%3A00388852" target="_blank" >RIV/68378271:_____/12:00388852 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevLett.109.111801" target="_blank" >http://dx.doi.org/10.1103/PhysRevLett.109.111801</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevLett.109.111801" target="_blank" >10.1103/PhysRevLett.109.111801</a>

Result language
angličtina
Original language name
Measurement of the difference in CP-violating asymmetries in D-0 -> K+K- and D-0 -> pi(+)pi(-) decays at CDF
Original language description
We report a measurement of the difference (Delta Acp) between time-integrated CP--violating asymmetries in D0-> K+ K- and D0-> pi+pi- decays reconstructed in the full data set of proton-antiproton collisions collected by the Collider Detector at Fermilab, corresponding to 9.7 fb-1 of integrated luminosity. The strong decay D*+->D0 pi+ is used to identify the charm meson at production as D0 or anti-D0. We measure Delta Acp = [-0.62 +- 0.21 (stat) +- 0.10 (syst)] %, which differs from zero by 2.7 Gaussianstandard deviations.This result supports similar evidence for CP violation in charm-quark decays obtained in proton-proton collisions.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BF - Elementary particle theory and high energy physics
OECD FORD branch
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Project
<a href="/en/project/LC527" target="_blank" >LC527: Center for Particle Physics</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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