Evidence for a Zb0(10610) in Dalitz analysis of Y(5S) -> Y(nS) pi0 pi0
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, I. Bedny, M. Belhorn, K. Belous, V. Bhardwaj,, B. Bhuyan, M. Bischofberger, S. Blyth, A. Bondar
TL;DR
This paper reports the first observation of specific decay modes of Y(5S) and provides evidence for the Zb0(10610) state through Dalitz plot analysis, using data from the Belle detector.
Contribution
First observation of Y(5S) -> Y(1,2S) pi0 pi0 decays and evidence for Zb0(10610) in Dalitz analysis at Belle.
Findings
Observation of Y(5S) -> Y(1,2S) pi0 pi0 decays
Evidence for Zb0(10610) with 4.9 sigma significance
Analysis based on 121.4 fb^-1 data sample
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.
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Taxonomy
TopicsAdvanced NMR Techniques and Applications · Radioactive Decay and Measurement Techniques · Advanced MRI Techniques and Applications