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Evidence for a Zb0(10610) in Dalitz analysis of Y(5S) -> Y(nS) pi0 pi0

Journal article published in 2012 by I. Adachi, K. Adamczyk, H. Aihara, K. Arinstein, Y. Arita, D. M. Asner, T. Aso, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, Y. Ban, E. Barberio, M. Barrett, A. Bay and other authors.
This paper is available in a repository.
This paper is available in a repository.

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Abstract

We report the first observation of Y(5S) -> Y(1,2S) pi0 pi0 decays. Evidence for the Zb0(10610) with 4.9sigma significance is found in a Dalitz plot analysis of Y(5S) -> Y(2S) pi0 pi0 decays. The results are obtained with a 121.4 fb^-1 data sample collected with the Belle detector at the Y(5S) resonance at the KEKB asymmetric-energy e+e- collider. ; Comment: 12 pages, 4 figures