[en] It is pointed out that the relative weight between (3/2)⁺ and (1/2)⁺ baryons has no effect on the yield of long-lived baryons in final states, but changes the yield of (3/2)⁺ baryons considerably. By analysing the experimental data we show a very strong suppression factor of (3/2)⁺ baryons of the order 0.3, and as a result the yield of the final state baryons and their ratio all agree with experiment

[en] Sn₂₉Se₅₆Sb₁₀Co₅ amorphous thin films were prepared on the polymer substrates, and was irradiated at room temperature by Nd:YAG pulsed laser in air, with the wavelength of 532 nm, pulse width of 90 ns after equilibration. Irradiation-induced surface morphological modifications were characterized using Secco-etching aided scanning electron microscopy (SEM). Complementary information was obtained from X-ray diffraction (XRD) spectrum and energy dispersive X-ray spectrum (EDS). The experimental results demonstrated that the grain size distribution was closely related to the laser beam profile. As a function of laser fluence, the average grain size evolution was also studied, which may not be interpreted by the conventional crystallography theories, and was related to some threshold effects

[en] Recently an important feature has been revealed in experiment by Spp-barS: the ratio of baryon to meson in final particles rises remarkably with the increases of energy, which can not be explained by the current theories. By combination of the 'three fireball model' of the nondiffractive hadron-hadron collision and the 'quark combination' proposed by authors. This can be explained naturally. And further, some predictions for high energy range are made

[en] With the advantage that, in e⁺e^- → heavy quark jets, quarks excited by electromagnetic interaction and by strong interaction can be distinguished from each other, the production rule for the later is investigated. It is found that the number of the quark produced satisfies a simple universal rule, and the resulted < n>, < n_i> multiplicity distribution and forward-backward correlation etc are all in agreement with experiment. The comparison of < n> with the data is presented

[en] The flavour independence of the strong coupling is a fundamental property of quantum chromodynamics (QCD). The observable which can be employed to test flavour independence is the multiplicity of charged hadrons in jets originating from quark of light flavour. Authors calculate the average of charged particle multiplicities in light flavour quark jets in e⁺e^-→q₀(anti q)₀→h'_s events. Authors find that in e⁺e^-→q₀(anti q)₀→h'_s events with different primary quarks , the average production probability of u,d,s quark. So the yields of directly production hadrons are related to the number of quark pairs. The symmetry of isospin and strangeness suppression factor etc are dependent on the flavor of prompt quark, and this dependence is more obvious in low energy region. But the final average multiplicities of charged particles seem to be equal in three kinds of light q₀ jet events, which shows that our results are consistent to the predictions of QCD, i.e. the strong interaction is irrelevant to the quark flavor.(author)

[en] The comparison of two fragmentation schemes used in the analysis of e⁺e^- annihilation are presented. It is found that the independent fragmentation assumption is strongly disfavored by the data of the final particle multiplicities, and the string fragmentation assumption agrees with experiments

[en] The charged particle multiplicity of heavy quark jet events in e⁺e^-annihilation is calculated by the quark production rule and quark combination rule. The results agree well with experiments. The comparison of the charged particle multiplicities with the light quark jet and average quark jet is presented

[en] In virtue of the simple physical picture of quark combination model, the authors determine the dependence of anti-particle to particle ratios on the mean production probability of anti-quarks and quarks. The ratios of various anti-particle to particle at relativistic heavy ion collisions are calculated without any additional assumption, which are consistent with the experiment results of the Au + Au collision at √S_NN = 130 GeV measured by STAR collaboration at RHIC. These results provide a basis for further studies of particles ratios in relativistic heavy ion collisions. (authors)

[en] The effects induced by η-η' mixing angle and the production of L = 1 mesons on the multiplicity rates of η and η' mesons are analysed. The results show that the influence of the production of L = 1 mesons on the multiplicity rays is quite important. When we take only this factors into account, the calculated multiplicity rates agree with experiment

[en] Using the earlier proposed picture of combining the 'three fire-ball model' of non-diffractive hadronic reaction and 'quark combination', yields of final hadrons are calculated further with different relative weights of 0^- to 1^- meson. The result of long-life particles is in consistent with the data and is nonsensitive to the 0^- to 1^- meson ratio