Effect of the ηη channel and interference phenomena in the two-pion transitions of charmonia and bottomonia

Surovtsev Yu.S.; Bydžovský P.; Gutsche T.; Kamiński R.; Lyubovitskij V.E.; Nagy M.

doi:10.1051/epjconf/201713801025

EPJ Web of Conferences (Jan 2017)

Effect of the ηη channel and interference phenomena in the two-pion transitions of charmonia and bottomonia

Surovtsev Yu.S.,
Bydžovský P.,
Gutsche T.,
Kamiński R.,
Lyubovitskij V.E.,
Nagy M.

Affiliations

Surovtsev Yu.S.: Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research
Bydžovský P.: Nuclear Physics Institute of the CAS
Gutsche T.: Institut für Theoretische Physik, Universität Tübingen, Kepler Center for Astro and Particle Physics
Kamiński R.: Institute of Nuclear Physics of the PAN
Lyubovitskij V.E.
Nagy M.: Institute of Physics, SAS

DOI: https://doi.org/10.1051/epjconf/201713801025
Journal volume & issue: Vol. 138
p. 01025

Abstract

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The basic shape of di-pion mass spectra in the two-pion transitions of both charmonia and bottomonia states is explained by a unified mechanism based on contributions of the ππ, KK̅, and ηη coupled channels including their interference. The role of the individual f0 resonances in shaping the di-pion mass distributions in the charmonia and bottomonia decays is considered.

Published in EPJ Web of Conferences

ISSN: 2100-014X (Online)
Publisher: EDP Sciences
Country of publisher: France
LCC subjects: Science: Physics
Website: http://www.epj-conferences.org/

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