123580047
Investigation of Interactions of pi- Mesons with Carbon Nuclei at 40-GeV/c
126039394
Study of the Coherent Interactions of pi- Mesons with the Carbon Nuclei at 40-GeV/c
122883220
Cross sections for the production of stable and unstable isotopes with charge numbers from one to eight in 16Op collisions at 3.25 A GeV/c
New experimental data are presented for the inclusive cross sections both for the production and for the yield of stable and unstable isotopes with charge numbers from one to eight in 16Op collisions at 3.25 A GeV/c.
120616762
On the mechanisms of cumulative-proton production in high-energy hadron-nucleus and nucleus-nucleus collisions
The importance of studying processes involving cumulative-proton production stems from their direct relation to the formation of multiquark configurations, so-called fluctons, in a nucleus owing to nucleondensity fluctuations in which two or more nucleons occur at a distance shorter than 1 fm from one another. According to [1], multiquark configurations may arise in two different physics patterns. The first, caused by a fluctuation of the target-nucleus density, is referred to as a cold model, while the second, associated with nuclear-matter compression occurring under the effect of an incident hadron or a projectile nucleus and leading to the formation of dense quark bags, is called a hot model. It should be noted that, in early interpretations, the production of cumulative protons was related to the Fermi momenta of nucleons. However, the calculations that took into account the Fermi momentum of nucleons [2] showed that the spectrum of fast ( p> 500 MeV/c) cumulative protons cannot be described in this way. In the present study, we examine new features of the process of cumulative-proton production—in particular, we analyze the behavior of the mean multiplicity of cumulative protons as a function of the charge and mass numbers of the target nucleus. Previously, our group studied [3–5] cumulativeproton production in π −12 С, pС, 4 НеС, СС, 16 Op, and p 20 Ne collisions at primary energies in the range 3–300 GeV and, on the basis of a vast statistical data sample, confirmed the universal regularity that the slope parameter of inclusive cross sections for cumulative protons in the cumulative number β is independent of the primary energy and mass of the incident particle or nucleus. It was shown that the fraction of events involving cumulative-proton production on a carbon nucleus is sensitive to the
120218483
Fragmentation of relativistic oxygen nuclei on protons
99876928
Multiple production in pi- C collisions at 4-GeV/c
116898559
Study of fragmentation of oxygen nucleus in sup 1 sup 6 Op-interactions at 3.25 A GeV/c momentum
120774373
Production of cumulative deuterons in collisions of oxygen nuclei with protons at a momentum of 3.25 GeV/c per nucleon
The production of cumulative nuclei of 2H in 16Op collisions at a momentum of 3.25 GeV/c per nucleon was studied for the first time under conditions of a 4π acceptance. The parameter T0 characterizing the slope of the spectrum of invariant cross sections for cumulative-deuteron production in 16Op interactions was determined. The contribution to cumulative-deuteron production from the decay of the alpha-particle clusters in nuclei upon slow-pion absorption by these clusters was found on the basis of an analysis of the momentum distribution of these cumulative nuclei. The estimates obtained for the contribution of these processes from a comparison of the mean multiplicities of particles and fragments in cumulative and noncumulative events agree well with the respective result extracted from the momentum distribution of cumulative deuterons.