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Calculation of regge trajectories of strange resonances and identification of the k-0*(800) as a non-ordinary meson

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Rodas Bilbao, Arkaitz (2016) Calculation of regge trajectories of strange resonances and identification of the k-0*(800) as a non-ordinary meson. Acta physica polonica B Proceedings supplement, 9 (3). pp. 453-458. ISSN 1899-2358

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Official URL: http://dx.doi.org/10.5506/APhysPolBSupp.9.453


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Abstract

We review how the Regge trajectory of an elastic resonance can be obtained just from its pole position and coupling, using a dispersive formalism. This allows us to deal correctly with the finite widths of resonances in Regge trajectories. In this way, we can calculate the Regge trajectories for the K* (892), K_1(1400) and K_(0)^(*)(1430), obtaining ordinary linear Regge trajectories, expected for qq resonances. In contrast, for the K_(0)^(*)(800) meson, the resulting Regge trajectory is non-linear and with much smaller slope, strongly supporting its non-ordinary nature.


Item Type:Article
Additional Information:

© Polska Akademia Nauk, Instytut Fizyki.
International Meeting on Excited QCD (eQCD 2016)(2016. Costa da Caparica, Portugal).
A.R. is supported by the Spanish Projects No. FPA2011-27853-C02-02 and No. FPA2014- 53375C2-2 and Red de Excelencia de Física Hadrónica FIS2014-57026-REDT.

Uncontrolled Keywords:Poles
Subjects:Sciences > Physics > Physics-Mathematical models
Sciences > Physics > Mathematical physics
ID Code:41876
Deposited On:27 Mar 2017 16:58
Last Modified:10 Dec 2018 15:09

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