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50 Years of quantum chromodynamics
Quantum Chromodynamics, the theory of quarks and gluons, whose interactions can be described by a local SU(3) gauge symmetry with charges called...
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Properties of light flavour baryons in hypercentral quark model
The light flavour baryons are studied within the quark model using the hypercentral description of the three-body system. The confinement potential...
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Comparison of two experiments on radiative neutron decay
Over 10 years ago we proposed an experiment on measuring the characteristics of radiative neutron decay in papers [1, 2]. At the same time we had...
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ρ(ω) → π 0 π 0 γ, ρ(ω) → ηπ 0 γ decays in the local quark Nambu-Jona-Lasinio model
The branching ratios and photon spectra of the rare processes ρ ( ω ) → π 0 π 0 γ , ρ ( ω ) → ηπ 0 γ are calculated in the framework of the standard local...
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Meson loops in the f0(980) and a0(980) radiative decays into ρ , ω
We calculate the radiative decay widths of the a 0 (980) and f 0 (980) scalar mesons into ργ and ωγ considering the dynamically generated nature of...
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Dielectron spectroscopy at 1-2 AGeV with HADES⋆
The HADES spectrometer at GSI (Darmstadt) is investigating the e + e - pair production in p+p, p + A and A + A collisions. In this contribution we would...
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The radiative decay of the Λ(1405) and its two-pole structure
We evaluate theoretically the radiative decay widths into γΛ and γΣ 0 of the two poles of the Λ (1405) found in chiral unitary theories and we find...
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Dilepton production in pp and CC collisions with HADES
e + e − production was studied using the High Acceptance... -
The E687 cryptoexotic vector meson candidate
A new study of the dip observed at 1.9 GeV by the Fermilab experiment E687 in diffractive photoproduction of 3π+3π− is presented. The E687 and the... -
Investigation of gf0ργ and coupling constants in light cone sum rules
We present a calculation of the coupling constant of f 0 →ργ and a 0 →ργ decays from the point of view of the light cone QCD sum rules. We estimate the...
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Theoretical analysis of dilepton spectra in heavy ion collisions at GSI-FAIR energies
This paper addresses the theoretical analysis of dilepton spectra in C+C collisions at GSI-SIS energies. Theoretical predictions for the recent data...
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Signatures of chiral dynamics in the nucleon to Delta transition⋆
Utilizing the methods of chiral effective field theory we present an analysis of the electromagnetic N Δ-transition current in the framework of the...
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Time-like compton scattering and the Bethe-Heitler process
Arguments are presented for p ( γ , e + e – ) p measurements to obtain new information about the off-shell time-like nucleon form factors, especially in the φ ...
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Extraction of radiative decay width for the non-strange partner of Θ
Using the results of the GRAAL Collaboration on the η photoproduction from the neutron target, we attempt to extract the partial radiative width of...
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Baryonic channels of dilepton production
A calculation of the Dalitz-decay width of baryon resonances is presented and applied to dilepton production in proton-proton collisions in the...
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Time-like compton scattering and the Bethe-Heitler process
Arguments are presented for p(γ, e + e −)p measurements to obtain new...