Measurement of the Decays ${\Lambda }_c\to \Sigma \pi \pi$ at Belle

Abstract

We report measurements of the branching fractions of the decays ${\Lambda }_c^{+}\to {\Sigma }^{+}{\pi }^{-}{\pi }^{+}$, ${\Lambda }_c^{+}\to {\Sigma }^0{\pi }^{+}{\pi }^0$ and ${\Lambda }_c^{+}\to {\Sigma }^{+}{\pi }^0{\pi }^0$ relative to the reference channel ${\Lambda }_c^{+}\to p{K}^{-}{\pi }^{+}$. The analysis is based on the full data sample collected at and close to ${\rm Y}(4S)$ resonance by the Belle detector at the KEKB asymmetric-energy $e^{+}{e}^{-}$ collider corresponding to the integrated luminosity of 711 fb${}^{-1}$. We measure $\mathcal{B}({\Lambda }_c^{+}\to {\Sigma }^{+}{\pi }^{-}{\pi }^{+})/\mathcal{B}({\Lambda }_c^{+}\to p{K}^{-}{\pi }^{+})=0.706\pm 0.003\pm 0.029$, $\mathcal{B}({\Lambda }_c^{+}\to {\Sigma }^0{\pi }^{+}{\pi }^0)/\mathcal{B}({\Lambda }_c^{+}\to p{K}^{-}{\pi }^{+})=0.491\pm 0.005\pm 0.028$ and $\mathcal{B}({\Lambda }_c^{+}\to {\Sigma }^{+}{\pi }^0{\pi }^0)/\mathcal{B}({\Lambda }_c^{+}\to p{K}^{-}{\pi }^{+})=0.198\pm 0.006\pm 0.016$. The listed uncertainties are statistical and systematic, respectively.

arXiv commentSubmitted to PRD

References in corpus (12)

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• Measurement of b hadron production fractions in 7 TeV pp collisions
• Measurements of absolute hadronic branching fractions of ${\Lambda }_c^{+}$ baryon
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• Measurement of the Branching Fraction Br(Lambda_c+ -> p K- pi+)
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• Measurement of Exclusive B Decays to Final States Containing a Charmed Baryon
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• Prospects for improved ${\Lambda }_c$ branching fractions
• Observation of $B^0\to p\bar{\Lambda }{D}^{(\ast )-}$

Cited by in corpus (4)

• Three-body charmed baryon Decays with SU(3) flavor symmetry
• Charmed baryon decays in $SU(3{)}_F$ symmetry
• Topological amplitudes of charmed baryon decays in the $SU(3{)}_F$ limit
• Charm Physics: another route towards New Physics