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Autor:
M. K. Volkov, K. Nurlan
Publikováno v:
Physics of Particles and Nuclei Letters. 18:148-152
Semileptonic decays of vector mesons $$\rho $$ , $$\omega $$ , ϕ into a pion and lepton pair $${{e}^{ + }}{{e}^{ - }},{{\mu }^{ + }}{{\mu }^{ - }}$$ are described in the chiral Nambu–Jona–Lasinio (NJL) model. Mixing of $$\omega $$ with ϕ is tak
Autor:
V. M. Samsonov
Publikováno v:
Physics of Atomic Nuclei. 84:201-206
Investigation of properties of nuclear matter at extremely high temperature and/or extremely high baryon densities under laboratory conditions is one of the fundamental lines of research in high-energy physics. Throughout the past decades, such inves
Autor:
V. V. Vien
Publikováno v:
Physics of Atomic Nuclei. 84:179-183
We propose a renormalizable Standard Model extension based on $$\Delta(54)$$ symmetry which successfully accommodates the recent experimental values of the physical observables of the quark sector, including six quark masses, three quark mixing angle
Publikováno v:
Physics of Particles and Nuclei Letters. 18:160-165
We compute the dilepton production rate from deconfined phase of quark-gluon plasma using the quasi-particle model (QPM). The computation is based on an extension of our previous work. In this model, the finite quark mass is replaced by the effective
Autor:
Alexander Berezhnoy, A. S. Gerasimov
Publikováno v:
Physics of Atomic Nuclei. 84:158-162
New upper limits on the intrinsic-charm contribution to the proton are obtained on the basis of experimental data on the existence of pentaquarks involving a hidden charm. Possible distributions of heavy quarks within the proton are analyzed.
Publikováno v:
Physics of Atomic Nuclei. 83:1359-1362
Determining the centrality of a collision, or the impact parameter, in heavy-nucleus collisions is important for the analysis of all experimental data and their comparison with theory. One of the methods for this is to measure the number of spectator
Publikováno v:
Physics of Particles and Nuclei Letters. 17:909-915
We have studied proton radioactivity of heavy nuclei of atomic number range 72 < Z < 88. We have calculated the energy released during the proton decay (QP) and half-lives of proton decay. To study the competition between different decay modes, we ha
Publikováno v:
Physics of Atomic Nuclei. 83:969-974
Prospects of a further investigation of excited states of $$B_{c}$$ mesons are discussed. Preliminary estimates of the relative yield of $$D$$ -wave states of $$B_{c}$$ mesons at the LHC are presented for the first time.
Autor:
M. V. Egorov
Publikováno v:
Physics of Atomic Nuclei. 83:738-741
The coherent photoproduction of $$\pi^{0}\pi^{0}$$ and $$\pi^{0}\eta$$ on nuclei in the mass-number region of $$A\leqslant 7$$ is studied systematically over the range between the threshold and the laboratory photon energy of $$E_{\gamma}=2$$ GeV. Th
Autor:
V. G. Nedorezov, A. A. Turinge
Publikováno v:
Physics of Atomic Nuclei. 83:742-745
New experimental data on the multifragmentation of carbon nuclei that is initiated by the photoproduction of neutral pions and eta mesons are discussed. The novelty is associated with the exclusive character of the processes being studied, in which c