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Search for the isospin violating decay Υ(4260) → J/ψηπ0 M. Ablikim, M. N. Achasov, X. C. Ai [et.al.]

Contributor(s): Ablikim, M | Ai, X. C | Chelkov, G. A | Achasov, M. N | Томский государственный университет Радиофизический факультет Научные подразделения РФФMaterial type: ArticleArticleSubject(s): BESIII, детектор | BEPCII, коллайдер | изоспинGenre/Form: статьи в журналах Online resources: Click here to access online In: Physical Review D Vol. 92, № 1. P. 012008-1-012008-11Abstract: Using data samples collected at center-of-mass energies of s√=4.009, 4.226, 4.257, 4.358, 4.416, and 4.599 GeV with the BESIII detector operating at the BEPCII storage ring, we search for the isospin violating decay Y(4260)→J/ψηπ0. No signal is observed, and upper limits on the cross section σ(e+e−→J/ψηπ0) at the 90% confidence level are determined to be 3.6, 1.7, 2.4, 1.4, 0.9, and 1.9 pb, respectively.
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Using data samples collected at center-of-mass energies of s√=4.009, 4.226, 4.257, 4.358, 4.416, and 4.599 GeV with the BESIII detector operating at the BEPCII storage ring, we search for the isospin violating decay Y(4260)→J/ψηπ0. No signal is observed, and upper limits on the cross section σ(e+e−→J/ψηπ0) at the 90% confidence level are determined to be 3.6, 1.7, 2.4, 1.4, 0.9, and 1.9 pb, respectively.

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