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Statements

Subject Item
n2:RIV%2F61389005%3A_____%2F12%3A00388459%21RIV13-AV0-61389005
rdf:type
skos:Concept n10:Vysledek
dcterms:description
The coupled processes – the ππ scattering, ππ KK, ππ ηη and J=ψ ϕ ππ;ϕKK – 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 ππ scattering is not enough, even for the f0(600) which is in the elastic region of the ππ scattering below the thresholds of coupled channels. At least, the combined 3-channel analysis of data on coupled processes ππ ππ;KK;ηη is needed, which is carried out adding the data on decays J=ψ ϕ ππ;ϕKK 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 ππ scattering and, however, the quite different parameters of some resonances. There are changed most considerably parameters of the f0(600) – now the obtained mass is in some accordance with prediction by S. Weinberg on the basis of mended symmetry. Some spectroscopic implications from results of the analysis are discussed The coupled processes – the ππ scattering, ππ KK, ππ ηη and J=ψ ϕ ππ;ϕKK – 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 ππ scattering is not enough, even for the f0(600) which is in the elastic region of the ππ scattering below the thresholds of coupled channels. At least, the combined 3-channel analysis of data on coupled processes ππ ππ;KK;ηη is needed, which is carried out adding the data on decays J=ψ ϕ ππ;ϕKK 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 ππ scattering and, however, the quite different parameters of some resonances. There are changed most considerably parameters of the f0(600) – now the obtained mass is in some accordance with prediction by S. Weinberg on the basis of mended symmetry. Some spectroscopic implications from results of the analysis are discussed
dcterms:title
Combined Analysis of Processes ππ ππ;KK;ηη and J=ψ Decays and Parameters of Scalar Mesons Combined Analysis of Processes ππ ππ;KK;ηη and J=ψ Decays and Parameters of Scalar Mesons
skos:prefLabel
Combined Analysis of Processes ππ ππ;KK;ηη and J=ψ Decays and Parameters of Scalar Mesons Combined Analysis of Processes ππ ππ;KK;ηη and J=ψ Decays and Parameters of Scalar Mesons
skos:notation
RIV/61389005:_____/12:00388459!RIV13-AV0-61389005
n10:predkladatel
n11:ico%3A61389005
n3:aktivita
n4:P n4:I
n3:aktivity
I, P(GAP203/12/2126), P(LA08002)
n3:cisloPeriodika
056
n3:dodaniDat
n12:2013
n3:domaciTvurceVysledku
n16:2507455
n3:druhVysledku
n17:J
n3:duvernostUdaju
n9:S
n3:entitaPredkladatele
n5:predkladatel
n3:idSjednocenehoVysledku
127685
n3:idVysledku
RIV/61389005:_____/12:00388459
n3:jazykVysledku
n14:eng
n3:klicovaSlova
scalar mesons; meson-meson scattering; multichannel resonances
n3:klicoveSlovo
n13:multichannel%20resonances n13:meson-meson%20scattering n13:scalar%20mesons
n3:kodStatuVydavatele
IT - Italská republika
n3:kontrolniKodProRIV
[D74C9F100910]
n3:nazevZdroje
Proceedings of Science
n3:obor
n18:BE
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
5
n3:projekt
n15:GAP203%2F12%2F2126 n15:LA08002
n3:rokUplatneniVysledku
n12:2012
n3:svazekPeriodika
8
n3:tvurceVysledku
Surovtsev, Yu. S. Lyubovitskij, V. E. Kaminski, R. Nagy, M. Bydžovský, Petr
s:issn
1824-8039
s:numberOfPages
20