Measurement of the branching fractions of the singly Cabibbo-suppressed decays $Λ_{c}^{+}\to pη$ and $Λ_{c}^{+}\to pω$
Creators: name: BESIII Collaboration
name: Ablikim, M.
name: Achasov, M. N.
name: Adlarson, P.
name: Ai, X. C.
name: Aliberti, R.
name: Amoroso, A.
name: An, M. R.
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name: Bai, Y.
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name: Batozskaya, V.
name: Begzsuren, K.
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name: Bettoni, D.
name: Bianchi, F.
name: Bianco, E.
name: Bloms, J.
name: Bortone, A.
name: Boyko, I.
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name: Brueggemann, A.
name: Cai, H.
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name: Calcaterra, A.
name: Cao, G. F.
name: Cao, N.
name: Cetin, S. A.
name: Chang, J. F.
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name: Chang, W. L.
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name: Chelkov, G.
name: Chen, C.
name: Chen, Chao
name: Chen, G.
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name: Chen, M. L.
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name: Chen, S. L.
name: Chen, S. M.
name: Chen, T.
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name: Chen, X. T.
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name: Chen, Z. J.
name: Cheng, W. S.
name: Choi, S. K.
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name: Cibinetto, G.
name: Coen, S. C.
name: Cossio, F.
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name: Dbeyssi, A.
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name: Dedovich, D.
name: Deng, Z. Y.
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name: Denysenko, I.
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name: De Mori, F.
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name: Dong, X.
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name: Duan, Z. H.
name: Egorov, P.
name: Fan, Y. H.
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name: Fang, J.
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name: Feng, J. H.
name: Fischer, K
name: Fritsch, M.
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name: Gao, H.
name: Gao, Y. N.
name: Gao, Yang
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Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: Based on 4.5 $\mbox{fb$^{-1}$}$ $e^{+}e^{-}$ collision data collected with BESIII detector at seven energy points between 4.600 and 4.699 GeV, the branching fractions for $Λ_{c}^{+}\to pη$ and $Λ_{c}^{+}\to pω$ were measured by means of single-tag method. The branching fractions of $Λ_{c}^{+}\to pη$ and $Λ_{c}^{+}\to pω$ are determined to be $(1.57\pm0.11_{\rm {stat}}\pm0.04_{\rm{syst}})\times10^{-3}$ and $(1.11\pm0.20_{\rm{stat}}\pm0.07_{\rm{syst}})\times10^{-3}$, with a statistical significance of greater than 10 $σ$ and 5.7 $σ$, respectively. These results are consistent with the previous measurements by BESIII, LHCb and Belle, and the result of $Λ_{c}^{+}\to pη$ is the most precise to date.
description: 24 pages, 4 figures