Radially excited $\psi$ mesons and the $Y$ enhancements

Autor:	Susana Coito
Jazyk:	angličtina
Rok vydání:	2018
Předmět:	Physics Hadronic decay Particle physics High Energy Physics - Phenomenology Meson Alias Excited state Distortion High Energy Physics::Lattice High Energy Physics::Phenomenology Order (ring theory) High Energy Physics::Experiment Unitary state
Popis:	While many properties of the vector charmonium first excitations are yet to be measured, enhancements at unexpected energies are intriguing, alias the $Y$ states. In order to understand the naturally unquenched mesonic line-shapes, the influence of the most relevant hadronic decay channels must be taken into account. Within an unitary effective approach we present results where mesonic loops are included in an equivalent manner to coupled-channels. We show results for the $\psi(3770)$ and $\psi(4160)$ systems, where we find the nonperturbative effects of dynamical generation of poles and line-shape distortion. Comment: 7 pages, 4 figures, Conference Proceedings of "XIIIth Quark Confinement and Hadron Spectrum", 31 July - 6 August 2018 Maynooth University, Ireland
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9009e06d5f5a40e3ecf2361551ae4b2e http://arxiv.org/abs/1811.08183 Zobrazit plný text záznamu