Parameters of scalar resonances from the combined analysis of ?? scattering and coupled-channel data

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F12%3A00388456" target="_blank" >RIV/61389005:_____/12:00388456 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1051/epjconf/20123709036" target="_blank" >http://dx.doi.org/10.1051/epjconf/20123709036</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/epjconf/20123709036" target="_blank" >10.1051/epjconf/20123709036</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Parameters of scalar resonances from the combined analysis of ?? scattering and coupled-channel data

Popis výsledku v původním jazyce

Peculiarities of obtaining parameters for broad multichannel resonances from data are discussed analyzing the experimental data on processes ?? ??, , in the scalar channel in a model-independent approach based on analyticity and unitarity and using an uniformization procedure. It is shown that one can obtain a good description of the ?? scattering data from the threshold up to 1.89 GeV with values of resonance parameters cited in the PDG tables as preferred. However, in this case the representation of the ?? background is not satisfactory and the data on the coupled process ?? are not well described, above 1.15 GeV even qualitatively. The combined analysis of the considered coupled processes is needed, which is also carried out satisfactorily. Then both above-indicated deficiencies related to the one-channel analysis are removed. The most important change concerns parameters of the f0(600) which are now in some accordance with the prediction by Weinberg on the basis of mended symmetry.

Název v anglickém jazyce

Parameters of scalar resonances from the combined analysis of ?? scattering and coupled-channel data

Popis výsledku anglicky

Peculiarities of obtaining parameters for broad multichannel resonances from data are discussed analyzing the experimental data on processes ?? ??, , in the scalar channel in a model-independent approach based on analyticity and unitarity and using an uniformization procedure. It is shown that one can obtain a good description of the ?? scattering data from the threshold up to 1.89 GeV with values of resonance parameters cited in the PDG tables as preferred. However, in this case the representation of the ?? background is not satisfactory and the data on the coupled process ?? are not well described, above 1.15 GeV even qualitatively. The combined analysis of the considered coupled processes is needed, which is also carried out satisfactorily. Then both above-indicated deficiencies related to the one-channel analysis are removed. The most important change concerns parameters of the f0(600) which are now in some accordance with the prediction by Weinberg on the basis of mended symmetry.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BE - Teoretická fyzika

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

EPJ Web of Conferences

ISSN

2100-014X

e-ISSN

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Svazek periodika

37

Číslo periodika v rámci svazku

09036

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

3

Strana od-do

1-3

Kód UT WoS článku

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EID výsledku v databázi Scopus

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