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.))%.
2017
Ablikim, M.; Achasov, M. N.; Ahmed, S.; Albrecht, M.; Amoroso, A.; An, F. F.; An, Q.; Bai, J. Z.; Bakina, O.; Baldini Ferroli, R.; Ban, Y.; Bennett, D...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2375856
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