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Observation of Λc+ →nK0Sπ+ M. Ablikim, M. N. Achasov, S. Ahmed [et.al.]

Contributor(s): Ablikim, M | Ahmed, S | Chelkov, G. A | Achasov, M. NMaterial type: ArticleArticleSubject(s): BESIII, детектор | BEPCII, коллайдер | барионы | изоспиныGenre/Form: статьи в журналах Online resources: Click here to access online In: Physical Review Letters Vol. 118, № 11. P. 112001-1-112001-7Abstract: We report the first direct measurement of decays of the Λ+c baryon involving the neutron. The analysis is performed using 567  pb−1 of e+e− collision data collected at √s=4.599  GeV with the BESIII detector at the BEPCII collider. We observe the decay Λ+c→nK0Sπ+ and measure the absolute branching fraction to be B(Λ+c→nK0Sπ+)=[1.82±0.23(stat)±0.11(syst)]%. A comparison to B[Λ+c→p(¯Kπ)0] provides an important test of isospin symmetry and final state interactions.
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We report the first direct measurement of decays of the Λ+c baryon involving the neutron. The analysis is performed using 567  pb−1 of e+e− collision data collected at √s=4.599  GeV with the BESIII detector at the BEPCII collider. We observe the decay Λ+c→nK0Sπ+ and measure the absolute branching fraction to be B(Λ+c→nK0Sπ+)=[1.82±0.23(stat)±0.11(syst)]%. A comparison to B[Λ+c→p(¯Kπ)0] provides an important test of isospin symmetry and final state interactions.

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