Search for CP Violation in D0 → π0 π0 Decays

Belle Collaboration

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

We search for CP violation in neutral charm meson decays using a data sample with an integrated luminosity of 966 fb-1 collected with the Belle detector at the KEKB e+e- asymmetric-energy collider. The asymmetry obtained in the rate of D0 and D¯0 decays to the π0π0 final state, [-0.03 ± 0.64(stat) ± 0.10(syst)]%, is consistent with no CP violation. This constitutes an order of magnitude improvement over the existing result. We also present an updated measurement of the CP asymmetry in the D0 → K0 Sπ0 decay: ACP (D0 → K0 Sπ0) [-0.21 ± 0.16(stat) ± 0.07(syst)]%.

Original languageEnglish
Article number211601
JournalPhysical Review Letters
Volume112
Issue number21
DOIs
Publication statusPublished - 2014 May 29

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CP violation
decay
asymmetry
mesons
luminosity
detectors
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Search for CP Violation in D0 → π0 π0 Decays. / Belle Collaboration.

In: Physical Review Letters, Vol. 112, No. 21, 211601, 29.05.2014.

Research output: Contribution to journalArticle

Belle Collaboration. / Search for CP Violation in D0 → π0 π0 Decays. In: Physical Review Letters. 2014 ; Vol. 112, No. 21.
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abstract = "We search for CP violation in neutral charm meson decays using a data sample with an integrated luminosity of 966 fb-1 collected with the Belle detector at the KEKB e+e- asymmetric-energy collider. The asymmetry obtained in the rate of D0 and D¯0 decays to the π0π0 final state, [-0.03 ± 0.64(stat) ± 0.10(syst)]{\%}, is consistent with no CP violation. This constitutes an order of magnitude improvement over the existing result. We also present an updated measurement of the CP asymmetry in the D0 → K0 Sπ0 decay: ACP (D0 → K0 Sπ0) [-0.21 ± 0.16(stat) ± 0.07(syst)]{\%}.",
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AU - Adachi, I.

AU - Aihara, H.

AU - Arinstein, K.

AU - Asner, D. M.

AU - Aulchenko, V.

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AU - Chilikin, K.

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AU - Dalseno, J.

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