Improved Measurements of Branching Fractions for B->Kpi, pipi and KK Decays

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dc.creatorThe Belle Collaboration
dc.creatorChao, Y.
dc.creatorSuzuki, K.
dc.creatorUnno, Y.
dc.date2003-11-28
dc.date2004-03-14
dc.date.accessioned2026-07-07T10:28:21Z
dc.date.available2026-07-07T10:28:21Z
dc.descriptionWe report improved measurements of branching fractions for $B\to Kπ$, $π^+π^-$, $π^+π^0$ and $K\bar{K}$ decays based on a data sample of 85.0 million $B\bar{B}$ pairs collected at the $Υ(4S)$ resonance with the Belle detector at the KEKB $e^+e^-$ storage ring. This data sample is almost three times larger than the sample previously used. We observe clear signals for $B\to Kπ$, $π^+π^-$ and $π^+π^0$ decays and set upper limits on $B\to K\bar{K}$ decays. The results can be used to give model-dependent constraints on the CKM angle $ϕ_3$, as well as limits on the hadronic uncertainty in the time-dependent analysis of the angle $ϕ_2$.
dc.description10 pages, 1 figure, 4 tables. Submitted to Phys. Rev. D Rapid Communications. Several corrections were made
dc.identifierhttps://arxiv.org/abs/hep-ex/0311061
dc.identifierhttp://arxiv.org/abs/hep-ex/0311061
dc.identifierPhys.Rev.D69:111102,2004
dc.identifierdoi:10.1103/PhysRevD.69.111102
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/177420
dc.subjectHigh Energy Physics - Experiment
dc.titleImproved Measurements of Branching Fractions for B->Kpi, pipi and KK Decays
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