Victor Korotkikh

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A partial-wave analysis of 9082 ηππn events produced in the reaction πp → ηππn at 18.3 GeV/c has been carried out using data from experiment 852 at Brookhaven National Laboratory. The data are dominated by J = 0 partial waves consistent with observation of the η(1295) and the η(1440). The mass and width of the η(1295) were determined to be 1282± 5 MeV and(More)
An amplitude analysis of an exclusive sample of 5765 events from the reaction pi- p-->eta'pi- p at 18 GeV/c is described. The eta'pi- production is dominated by natural parity exchange and by three partial waves: those with J(PC) = 1(-+), 2(++), and 4(++). A mass-dependent analysis of the partial-wave amplitudes indicates the production of the a2(1320)(More)
The problem of "true" jets extraction from "thermal" background in heavy ion collisions at energy of future LHC collider is investigated in central S-S collisions. The modiied UA1 jet nder is applied to cut "false" jets background and to reconstruct "true" high-p T jets from hard parton-parton scattering. The possibility of dijet acoplanarity distribution(More)
In the paper we present results of computational experiments to suggest the possibility of a general optimality condition of complex systems: a system demonstrates the optimal performance for a problem, when the structural complexity of the system is in a certain relationship with the structural complexity of the problem. The optimality condition could be(More)
A general condition determining the optimal performance of a complex system has not yet been found and the possibility of its existence is unknown. To contribute in this direction, an optimization algorithm as a complex system is presented. The performance of the algorithm for any problem is controlled as a convex function with a single optimum. To(More)
We study a new process of peripheral heavy ion collisions in which a nucleus is excited to the discrete state and then emits γ-rays. Large nuclear Lorentz factor allows to observe the high energy photons. On one hand it gives a significant background of γ-rays in the nuclear fragmentation region and on the other hand it can be used for the nuclear beam(More)
Details of the analysis of the ηπ system studied in the reaction πp → ηπp at 18 GeV/c are given. Separate analyses for the 2γ and π+π−π0 decay modes of the η are presented. An amplitude analysis of the data indicates the presence of interference between the a−2 (1320) and a J PC = 1−+ wave between 1.2 and 1.6 GeV/c2. The phase difference between these waves(More)