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Measurement of the CP-violating asymmetries in B-0 -> K-s(0)pi(0) and of the branching fraction B-0 -> K-0 pi(0)

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Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J. P., Poireau, V., Prudent, X., Tisserand, V., Zghiche, A., Tico, J. Garra et al.
(2008) Measurement of the CP-violating asymmetries in B-0 -> K-s(0)pi(0) and of the branching fraction B-0 -> K-0 pi(0). Physical Review D (Particles, Fields, Gravitation and Cosmology), Vol.77 (No.1). doi:10.1103/PhysRevD.77.012003 ISSN 1550-7998.

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Official URL: http://dx.doi.org/10.1103/PhysRevD.77.012003

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Abstract

We present a measurement of the time-dependent CP-violating asymmetries in B-0 -> K-S(0)pi(0) decays based on 383x10(6) Upsilon(4S)-> B (B) over bar events collected by the BABAR experiment at the PEP-II asymmetric-energy B Factory at the Stanford Linear Accelerator Center. We measure the direct CP-violating asymmetry C-KS(0)pi(0)=0.24 +/- 0.15 +/- 0.03 and the CP-violating asymmetry in the interference between mixing and decay S-KS(0)pi(0)=0.40 +/- 0.23 +/- 0.03, where the first errors are statistical and the second are systematic. On the same sample, we measure the decay branching fraction, obtaining B(B-0 -> K-0 pi(0))=(10.3 +/- 0.7 +/- 0.6)x10(-6).

Item Type: Journal Article
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Journal or Publication Title: Physical Review D (Particles, Fields, Gravitation and Cosmology)
Publisher: American Physical Society
ISSN: 1550-7998
Official Date: January 2008
Dates:
DateEvent
January 2008Published
Volume: Vol.77
Number: No.1
Number of Pages: 9
DOI: 10.1103/PhysRevD.77.012003
Status: Peer Reviewed
Publication Status: Published

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