Measurement of Branching Fractions for $B\to χ_{c1(2)} K (K^*)$ at Belle

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dc.creatorThe Belle Collaboration
dc.creatorSoni, N.
dc.date2005-08-14
dc.date2005-12-24
dc.date.accessioned2026-07-07T10:28:34Z
dc.date.available2026-07-07T10:28:34Z
dc.descriptionWe have measured the branching fractions for the exclusive decay modes $B\to χ_{c1(2)} K(K^*)$ using a $140~{\rm fb}^{-1}$ data sample collected by the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. The measured branching fractions for $B^+\to χ_{c1}K^+$, $B^0\to χ_{c1}K^0$, $B^0\to χ_{c1}K^{*0}$ and $B^+\to χ_{c1}K^{*+}$ decay modes are $(4.5\pm 0.2\pm0.5)\times 10^{-4}$, $(3.5\pm 0.3\pm0.5)\times 10^{-4}$, $(3.1\pm 0.3\pm0.7)\times 10^{-4}$ and $(4.1\pm 0.6\pm0.9)\times 10^{-4}$, respectively, where the first error is statistical and the second error is systematic. We do not observe statistically significant signals for the $B\to χ_{c2}K(K^*)$ decay modes and set upper limits at the 90% confidence level. We also study the helicity distribution for $B\to χ_{c1} K^*$ decay mode and show that the longitudinal polarization component is dominant. {{\it Keywords:} {$B$-meson, Charmonium, Branching Fractions, Polarization}} {{\it PACS:} 13.25.Hw, 11.30.Er}
dc.description21 pages, 5 figures, 3 tables. Submitted to PLB
dc.identifierhttps://arxiv.org/abs/hep-ex/0508032
dc.identifierhttp://arxiv.org/abs/hep-ex/0508032
dc.identifierPhys.Lett.B634:155-164,2006
dc.identifierdoi:10.1016/j.physletb.2006.01.013
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/177491
dc.subjectHigh Energy Physics - Experiment
dc.titleMeasurement of Branching Fractions for $B\to χ_{c1(2)} K (K^*)$ at Belle
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