2024-03-28T19:27:56Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/519742018-06-25T10:36:07Zcom_10261_37com_10261_4col_10261_290
DIGITAL.CSIC
author
Aaltonen, T.
author
Álvarez González, B.
author
Carrillo, S.
author
Casal, Bruno
author
Cuevas, Javier
author
Gómez, G.
author
Palencia, Enrique
author
Rodrigo, Teresa
author
Scodellaro, Luca
2012-06-21T09:45:24Z
2012-06-21T09:45:24Z
2012
Physical Review D 85(1): 012009 (2012)
http://hdl.handle.net/10261/51974
10.1103/PhysRevD.85.012009
We report on a measurement of CP-violating asymmetries (A CP) in the Cabibbo-suppressed D0→π +Ï€ - and D0→K +K - decays reconstructed in a data sample corresponding to 5.9fb -1 of integrated luminosity collected by the upgraded Collider Detector at Fermilab. We use the strong decay D *+→D0Ï€ + to identify the flavor of the charmed meson at production and exploit CP-conserving strong ccÌ„ pair production in ppÌ„ collisions. High-statistics samples of Cabibbo-favored D0→K -Ï€ + decays with and without a D *± tag are used to correct for instrumental effects and significantly reduce systematic uncertainties. We measure A CP(D0→π +Ï€ -)=(+0.22±0.24(stat) ±0.11(syst))% and A CP(D0→K +K -)=(-0.24±0.22(stat)±0.09(syst))%, in agreement with CP conservation. These are the most precise determinations from a single experiment to date. Under the assumption of negligible direct CP violation in D0→π +Ï€ - and D0→K +K - decays, the results provide an upper limit to the CP-violating asymmetry in D0 mixing, |ACPind(D0)|<0.13% at the 90% confidence level. © 2012 American Physical Society.
eng
openAccess
Measurement of CP-violating asymmetries in D0→π +π - and D0→K +K - decays at CDF
artículo
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URL
https://digital.csic.es/bitstream/10261/51974/1/Measurement%20of%20CP-violating.pdf
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Measurement of CP-violating.pdf
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Measurement of CP-violating.pdf.txt