We report the first observation of the decay Lambda_c+ --> Sigma- pi+pi+pi0, based on data obtained in e+e- annihilations with an integrated luminosity of 567 pb−1 at sqrt(s)=4.6GeV. The data were collected with the BESIII detector at the BEPCII storage rings. The absolute branching fraction B(Lambda_c+ --> Sigma- pi+pi+pi0) is determined to be (2.11 ± 0.33(stat.) ± 0.14(syst.))%. In addition, an improved measurement of B(Lambda_c+ → Sigma−π+π+) is determined as (1.81 ± 0.17(stat.) ± 0.09(syst.))%.
Observation of the decay Lambda_c+ -->Sigma-pi+pi+pi0
FARINELLI, Riccardo;GARZIA, Isabella;MEZZADRI, Giulio;
2017
Abstract
We report the first observation of the decay Lambda_c+ --> Sigma- pi+pi+pi0, based on data obtained in e+e- annihilations with an integrated luminosity of 567 pb−1 at sqrt(s)=4.6GeV. The data were collected with the BESIII detector at the BEPCII storage rings. The absolute branching fraction B(Lambda_c+ --> Sigma- pi+pi+pi0) is determined to be (2.11 ± 0.33(stat.) ± 0.14(syst.))%. In addition, an improved measurement of B(Lambda_c+ → Sigma−π+π+) is determined as (1.81 ± 0.17(stat.) ± 0.09(syst.))%.File in questo prodotto:
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