Combined Analysis of Processes ?? ??;KK;?? and J=? Decays and Parameters of Scalar Mesons

Result code in IS VaVaI

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Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Combined Analysis of Processes ?? ??;KK;?? and J=? Decays and Parameters of Scalar Mesons

Original language description

The coupled processes ? the ?? scattering, ?? KK, ?? ?? and J=? ? ??;?KK ? are considered in the 2- and 3-channel approaches for studying f0-mesons. An applied modelindependent method of analysis is based on analyticity and unitarity and uses an uniformization procedure. It is shown that for obtaining correct values of the f0-meson parameters a one-channel dispersive equation (Roy?s equations) analysis of the ?? scattering is not enough, even for the f0(600) which is in the elastic region of the ?? scattering below the thresholds of coupled channels. At least, the combined 3-channel analysis of data on coupled processes ?? ??;KK;?? is needed, which is carried out adding the data on decays J=? ? ??;?KK from Mark III , DM2 and BES Collaborations. The latter allows us considerably to diminish possible scenarios of the resonance representations on the Riemann surface of the S-matrix, which give the similar description of the multi-channel ?? scattering and, however, the quite different par

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BE - Theoretical physics

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2012

Confidentiality

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

Name of the periodical

Proceedings of Science

ISSN

1824-8039

e-ISSN

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Volume of the periodical

8

Issue of the periodical within the volume

056

Country of publishing house

IT - ITALY

Number of pages

20

Pages from-to

1-20

UT code for WoS article

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EID of the result in the Scopus database

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