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Evidence for direct CP violation in the measurement of the Cabbibo-Kobayashi-Maskawa angle γ with B∓→D(*)K(*)∓ decays

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We report the measurement of the Cabibbo-Kobayashi-Maskawa CP-violating angle γ through a Dalitz plot analysis of neutral D-meson decays to K0Sπ+π− and K0SK+K− produced in the processes B∓→DK∓, B∓→D∗K∓ with D∗→Dπ0, Dγ, and B∓→DK*∓ with K*∓→K0Sπ∓, using 468 million B¯¯¯B pairs collected by the BABAR...

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Main Authors: Amo Sanchez, Pablo del (Author) , Adametz, Aleksandra (Author) , Marks, Jörg (Author) , Schenk, Sebastian (Author) , Uwer, Ulrich (Author) , Hartmann, Thomas (Author) , Leddig, Torsten (Author) , Schröder, Henning (Author) , Waldi, Roland (Author)
Corporate Author: BABAR Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 16 September 2010
In: Physical review letters
Year: 2010, Volume: 105, Issue: 12, Pages: 1-7
ISSN:1079-7114
DOI:10.1103/PhysRevLett.105.121801
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.105.121801
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.105.121801
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Author Notes:BABAR Collaboration
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Summary:We report the measurement of the Cabibbo-Kobayashi-Maskawa CP-violating angle γ through a Dalitz plot analysis of neutral D-meson decays to K0Sπ+π− and K0SK+K− produced in the processes B∓→DK∓, B∓→D∗K∓ with D∗→Dπ0, Dγ, and B∓→DK*∓ with K*∓→K0Sπ∓, using 468 million B¯¯¯B pairs collected by the BABAR detector at the PEP-II asymmetric-energy e+e− collider at SLAC. We measure γ=(68±14±4±3)° (modulo 180°), where the first error is statistical, the second is the experimental systematic uncertainty, and the third reflects the uncertainty in the description of the neutral D decay amplitudes. This result is inconsistent with γ=0 (no direct CP violation) with a significance of 3.5 standard deviations.
Item Description:Im Titel sind die Minus-oder-Pluszeichen und die Tropfensternchen hochgestellt
Im Titel ist [ast] als Tropfensternchen dargestellt
BABAR Collaboration: P. del Amo Sanchez, A. Adametz, J. Marks, S. Schenk, U. Uwer, T. Hartmann, T. Leddig, H. Schröder, R. Waldi [und viele weitere]
Gesehen am 25.08.2023
Physical Description:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.105.121801

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