Masses and widths of scalar-isoscalar multi-channel resonances from data analysis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F14%3A00425770" target="_blank" >RIV/61389005:_____/14:00425770 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1088/0954-3899/41/2/025006" target="_blank" >http://dx.doi.org/10.1088/0954-3899/41/2/025006</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/0954-3899/41/2/025006" target="_blank" >10.1088/0954-3899/41/2/025006</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Masses and widths of scalar-isoscalar multi-channel resonances from data analysis

Popis výsledku v původním jazyce

The peculiarities of obtaining parameters for broad multi-channel resonances from data are discussed, analyzing the experimental data on processes pi pi -> pi pi, K (K) over bar in the I(G)J(PC) = 0(+)0(++) channel in a model-independent approach based on analyticity and unitarity, and using an uniformization procedure. We show that it is possible to obtain a good description of the pi pi scattering data from the threshold to 1.89 GeV with parameters of resonances cited in the Particle Data Group tablesas preferred. However, in this case, first, the representation of the pi pi background is unsatisfactory; second, the data on the coupled process pi pi -> K (K) over bar are not well described even qualitatively above 1.15 GeV when using the resonance parameters from only the pi pi scattering analysis. The combined analysis of these coupled processes is needed, and is carried out satisfactorily. Then, both of the above-indicated issues related to the analysis of pi pi scattering only ar

Název v anglickém jazyce

Masses and widths of scalar-isoscalar multi-channel resonances from data analysis

Popis výsledku anglicky

The peculiarities of obtaining parameters for broad multi-channel resonances from data are discussed, analyzing the experimental data on processes pi pi -> pi pi, K (K) over bar in the I(G)J(PC) = 0(+)0(++) channel in a model-independent approach based on analyticity and unitarity, and using an uniformization procedure. We show that it is possible to obtain a good description of the pi pi scattering data from the threshold to 1.89 GeV with parameters of resonances cited in the Particle Data Group tablesas preferred. However, in this case, first, the representation of the pi pi background is unsatisfactory; second, the data on the coupled process pi pi -> K (K) over bar are not well described even qualitatively above 1.15 GeV when using the resonance parameters from only the pi pi scattering analysis. The combined analysis of these coupled processes is needed, and is carried out satisfactorily. Then, both of the above-indicated issues related to the analysis of pi pi scattering only ar

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

2014

Kód důvěrnosti údajů

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

Název periodika

Journal of Physics G-Nuclear and Particle Physics

ISSN

0954-3899

e-ISSN

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Svazek periodika

41

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

18

Strana od-do

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Kód UT WoS článku

000329989600006

EID výsledku v databázi Scopus

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