Parameters of scalar resonances from the combined analysis of data on processes pi pi -> pi pi, K(K)over-bar, eta eta and J/psi decays

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F14%3A00428163" target="_blank" >RIV/61389005:_____/14:00428163 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1103/PhysRevD.89.036010" target="_blank" >http://dx.doi.org/10.1103/PhysRevD.89.036010</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevD.89.036010" target="_blank" >10.1103/PhysRevD.89.036010</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Parameters of scalar resonances from the combined analysis of data on processes pi pi -> pi pi, K(K)over-bar, eta eta and J/psi decays

Popis výsledku v původním jazyce

A combined analysis of data on the isoscalar S-wave processes pi pi -> pi pi, K (K) over bar, eta eta and on decays J/psi -> phi pi pi, phi K (K) over bar from the DM2, Mark III, and BES II Collaborations is performed to study f(0) mesons. The method ofanalysis is based on analyticity and unitarity and uses an uniformization procedure. In the analysis limited only to the multichannel pi pi-scattering data, two possible sets of parameters of the f(0)(500) were found: In both cases the mass was about 700MeV but the total width was either about 680 or 1040 MeV. The extension of the analysis using only the DM2 and Mark III data on the J/psi decays does not allow us to choose between these sets. However, the data from BES II on the di-pion mass distribution in the decay J/psi -> phi pi(+)pi(-) clearly prefer the wider f(0)(500) state. Spectroscopic implications from the results of the analysis are also discussed.

Název v anglickém jazyce

Parameters of scalar resonances from the combined analysis of data on processes pi pi -> pi pi, K(K)over-bar, eta eta and J/psi decays

Popis výsledku anglicky

A combined analysis of data on the isoscalar S-wave processes pi pi -> pi pi, K (K) over bar, eta eta and on decays J/psi -> phi pi pi, phi K (K) over bar from the DM2, Mark III, and BES II Collaborations is performed to study f(0) mesons. The method ofanalysis is based on analyticity and unitarity and uses an uniformization procedure. In the analysis limited only to the multichannel pi pi-scattering data, two possible sets of parameters of the f(0)(500) were found: In both cases the mass was about 700MeV but the total width was either about 680 or 1040 MeV. The extension of the analysis using only the DM2 and Mark III data on the J/psi decays does not allow us to choose between these sets. However, the data from BES II on the di-pion mass distribution in the decay J/psi -> phi pi(+)pi(-) clearly prefer the wider f(0)(500) state. Spectroscopic implications from the results of the analysis are also discussed.

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

Physical Review D: Particles, Fields, Gravitation and Cosmology

ISSN

1550-7998

e-ISSN

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Svazek periodika

89

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

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Kód UT WoS článku

000332163900007

EID výsledku v databázi Scopus

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