FOCUS Document 807-v23

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Study of Lambda_c Cabibbo favored decays containing a Lambda baryon in the final state

Document #:
FOCUS-doc-807-v23
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Publication
Submitted by:
David Lopes Pegna
Updated by:
David Lopes Pegna
Document Created:
21 Mar 2005, 10:53
Contents Revised:
23 Aug 2005, 14:55
Metadata Revised:
12 May 2006, 08:50
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Abstract:
Using data from the FOCUS experiment (FNAL-E831), we study the decay of $\Lambda^+_c$ baryons into final states containing a $\Lambda$ hyperon. The branching fractions of $\Lambda^+_c$ into $\Lambda \pi^+$, $\Lambda \pi^+ \pi^+ \pi^-$ and $\Lambda \overline{K}\,\!^0 K^+$ relative to that into $pK^-\pi^+$ are measured to be $0.217 \pm 0.013 \pm 0.020$, $0.508 \pm 0.024 \pm 0.024$ and $0.142 \pm 0.018 \pm 0.022$, respectively. We also report new measurements of
$\frac{\Gamma(\Lambda^+_c \rightarrow \Sigma^0 \pi^+)}{\Gamma(\Lambda^+_c \rightarrow \Lambda \pi^+)} = 1.09 \pm 0.11 \pm 0.19$,
$\frac{\Gamma(\Lambda^+_c \rightarrow \Sigma^0 \pi^+\pi^+ \pi^-)}{\Gamma(\Lambda^+_c \rightarrow \Lambda \pi^+ \pi^+ \pi^-)} = 0.26 \pm 0.06 \pm 0.09$ and $\frac{\Gamma(\Lambda^+_c \rightarrow
\Xi(1690)^0(\Lambda \overline{K}\,\!^0) K^+)}{
\Gamma(\Lambda^+_c \rightarrow \Lambda \overline{K}\,\!^0 K^+)} = 0.33 \pm 0.10 \pm 0.04$. Further, an analysis of the subresonant structure for the $\Lambda^+_c \rightarrow \Lambda \pi^+\pi^+\pi^-$ decay mode is presented.
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Published in hep-ex/0505077.
Published in Phys. Lett. B vol. 624 pg. 22.
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