FOCUS Document 873-v1

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Measurements of Six-Body Hadronic Decays of the $D^0$ Charmed Meson

Document #:
FOCUS-doc-873-v1
Document type:
Publication
Submitted by:
Eduardo Luiggi
Updated by:
Eduardo Luiggi
Document Created:
24 Aug 2005, 15:25
Contents Revised:
24 Aug 2005, 15:25
Metadata Revised:
22 Apr 2004, 16:10
Actually Revised:
24 Aug 2005, 16:08
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Abstract:
Using data collected by the FOCUS experiment at Fermilab,
we report the discovery of the decay modes
$D^0\toK^-\pi^+\pi^+\pi^-\pi^-$ and $D^0\to\pi^+\pi^+\pi^+\pi^-\pi^-\pi^-$.
With a sample of $48 \pm 10$ reconstructed $D^0\toK^-\pi^+\pi^+\pi^-\pi^-$
decays and $149 \pm 17$ reconstructed $D0\to\pi^+\pi^+\pi^+\pi^-\pi^-\pi^-$ decays,
we measure the following relative branching ratios:
$\Gamma(D^0\toK^-\pi^+\pi^+\pi^+\pi^-\pi^-)/\Gamma(D^0\toK^-\pi^+\pi^+\pi^-)=
(2.70\pm 0.58 \pm 0.38) \times 10^{-3}$
$\Gamma(D^0\to\pi^+\pi^+\pi^+\pi^-\pi^-\pi^-)/\Gamma(D^0\toK^-\pi^+\pi^+\pi^-)=
(5.23 \pm 0.59 \pm 1.35) \times10^{-3}$
$\Gamma(D^0\to\pi^+\pi^+\pi^+\pi^-\pi^-\pi^-)/\Gamma(D^0K^-\pi^+\pi^+\pi^+\pi^-\pi^- ) =
1.93 \pm 0.47 \pm 0.48$
The first errors are statistical and the second are systematic.
The branching fraction of the Cabibbo suppressed six-body decay mode is
measured to be a factor of two higher than the branching fraction of the
Cabibbo favored six-body decay mode.
Files in Document:
  • PDF (sixbody.pdf, 124.0 kB)
  • PS (sixbody.ps, 299.3 kB)
Topics:
Journal References:
Published in hep-ex/0401019.
Published in Phys. Lett. B vol. 586 pg. 21.
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