Filters
Effect of coupled channels of the multi-channel pion-pion scattering in two-pion transitions of the Upsilon mesons
The effect of isoscalar S -wave processes (pi pi -> pi pi, K (K) over bar, eta eta) is considered in the analysis of data (from the ARGUS, CLEO, CUSB, Crystal Ball, Belle, BABAR collaborations) on the bottomonia decays.It is shown that the dipion mas...
BE - Teoretická fyzika
- 2015 •
- D •
- Link
Rok uplatnění
D - Stať ve sborníku
Výsledek na webu
Coupled-Channel Analysis of the Process γγ → π0π0
We study the process gamma gamma ->pi(0)pi(0) involving the principal mechanisms, the structure of its cross section and the role of individual isoscalar-tensor resonances in the saturation of its energy spectrum....
Particles and field physics
- 2022 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
Pions and Excited Scalars in Minkowski Space DSBSE Formalism
numerically accessible, but also provides a reasonable description of the pseudoscalar meson system. However, in the case of scalar mesons, the model is less reliableWe present the solution of Schwinger-Dyson and ...
BE - Teoretická fyzika
- 2015 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Light-meson spectroscopy and combined analysis of processes with pseudoscalar mesons
The status and parameters of the scalar, vector, and tensor mesonic resonances are obtained in the multichannel analysis of processes pi pi -> pi pi, K (K) over bar, eta(0)(600) meson with mass 774 +/- 15 MeV and width 988 ...
BE - Teoretická fyzika
- 2010 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Neutral pseudoscalar meson decays: pi0 -} gamma gamma and eta -} gamma gamma in SU(3) limit
Present and planned experiments motivate new theoretical study of properties of light unflavoured pseudoscalar meson decays. An overview including details on two-loop calculation in SU(3) limit is given....
BF - Elementární částice a fyzika vysokých energií
- 2010 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Light meson gas in the QCD vacuum and oscillating universe
We have developed a phenomenological effective quantum-field theoretical model describing the 'hadron gas' of the lightest pseudoscalar mesons, scalar sigma-meson and sigma-vacuum, i.e. the expectation value of the...
Astronomy (including astrophysics,space science)
- 2018 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
Masses and widths of scalar-isoscalar multi-channel resonances from data analysis
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 bas...
BE - Teoretická fyzika
- 2014 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
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
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. T...
BE - Teoretická fyzika
- 2014 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
ON SCALAR MESONS FROM THE COMBINED ANALYSIS OF MULTI-CHANNEL pi pi SCATTERING AND J/psi DECAYS
In the combined analysis data on multi-channel pi pi scattering and J/psi decays, a status and parameters of the scalar mesonic resonances are obtained....
BG - Jaderná, atomová a molekulová fyzika, urychlovače
- 2011 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Search for physics beyond the standard model in multilepton final states in proton-proton collisions at root s=13 TeV
of a light scalar or pseudoscalar boson in association with a pair of top quarks fractions of new scalar (pseudoscalar) bosons to dielectrons or dimuons above 0.004 on an extension of the standard model with s...
Particles and field physics
- 2020 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
- 1 - 10 out of 3 333