Effect of coupled channels of the multi-channel pion-pion scattering in two-pion transitions of the Υ mesons-Reference-Cited by-同舟云学术

Effect of coupled channels of the multi-channel pion-pion scattering in two-pion transitions of the Υ mesons

Published:2015-01 Issue: Volume:39 Page:1560090
ISSN:2010-1945
Container-title:International Journal of Modern Physics: Conference Series
language:en
Short-container-title:Int. J. Mod. Phys. Conf. Ser.

Author:

Surovtsev Yurii S.¹,Bydžovský Petr²,Gutsche Thomas³,Kamiński Robert⁴,Lyubovitskij Valery E.³⁵⁶,Nagy Miroslav⁷

Affiliation:

1. Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980 Dubna, Russia

2. Nuclear Physics Institute, Academy of Sciences of the Czech Republic, 250 68 Řež near Prague, Czech Republic

3. Institut für Theoretische Physik, Universität Tübingen, Kepler Center for Astro and Particle Physics, Auf der Morgenstelle 14, D-72076 Tübingen, Germany

4. Institute of Nuclear Physics of the Polish Academy of Sciences, Cracow 31342, Poland

5. Department of Physics, Tomsk State University, 634050 Tomsk, Russia

6. Mathematical Physics Department, Tomsk Polytechnic University, Lenin Avenue 30, 634050 Tomsk, Russia

7. Institute of Physics, Slovak Academy of Sciences, Dúbravská cesta 9, Bratislava 84511, Slovak Republic

Abstract

The effect of isoscalar S-wave processes [Formula: see text] is considered in the analysis of data (from the ARGUS, CLEO, CUSB, Crystal Ball, Belle, BABAR collaborations) on the bottomonia decays — [Formula: see text] ([Formula: see text]). It is shown that the dipion mass spectra of these decays are explained by the unified mechanism related to the contribution of the multichannel [Formula: see text] scattering in the final states of these reactions. Since in the analysis the multichannel [Formula: see text]-scattering amplitudes did not change in comparison with the ones in our combined analysis of data on the multichannel [Formula: see text] scattering and on the charmonia decays — [Formula: see text] and [Formula: see text] (from the Crystal Ball, DM2, Mark II, Mark III, and BES II) — the results confirm all our earlier conclusions on the scalar mesons.

Publisher

World Scientific Pub Co Pte Lt

Link

https://www.worldscientific.com/doi/pdf/10.1142/S2010194515600903

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