Description of modern pyroelectric technologies is presented in this article. Various schemes for generating X-ray radiation are presented. The possibility of controlling charged particle beams by means of a pyroelectric deflector is demonstrated. The prospects for the development of pyroelectric technologies and their application are discussed.

The Baikal-GVD deep-water neutrino telescope of the cubic kilometer scale, focused on research in the field of astrophysics and particle physics, is being built in Lake Baikal. As of 2021, the effective volume of the detector reaches 0.4 km3 for cascades generated by high-energy astrophysical neutrinos. The article describes the design and basic characteristics of the telescope data acquisition system, discusses some aspects of deepwater engineering related to the deployment of the detector, and presents a selected results obtained with the partially complete detector.

The correlation between the formation of the unstable ⁸Be nucleus and accompanying α-particles in the fragmentation of relativistic ¹⁶О, ²²Ne, ²⁸Si, and ¹⁹⁷Au nuclei in a nuclear track emulsion is investigated. The ⁸Be decays are identified in a wide energy range by invariant masses calculated from 2α-pair opening angles. The adopted approximations were verified by data on fragmentation of ¹⁶O nuclei in a hydrogen bubble chamber in a magnetic field. An increase in the ⁸Be contribution to the dissociation with an α particle multiplicity is found.

One of the alternatives to the Standard Model (SM) of elementary particles is the supersymmetry theories; the electric dipole moment (EDM) of elementary particles can serve as an excellent tool to confirm the validity of one of these models. For example: in the case of a neutron, the EDM, compatible with the SM, is within a range of 10⁻³³ to 10⁻³⁰ e cm, whereas the supersymmetry theories predict the presence of an EDM of much larger value, at the level of 10⁻²⁹–10⁻²⁴ e cm. Experiments on the search for EDM have been carried out for more than 50 years; however, most of them are based on charge-neutral particles (neutron, atoms). The EDM of charged particles (proton, deuteron) can be measured in a storage ring with the use of the phenomenon of the beam polarization precession in an electromagnetic field. The storage ring has a number of advantages when used as a tool for EDM measurement; however, there are also a number of problems. This paper discusses the main approaches to solving these problems: the BNL, spin wheel, and frequency domain methods.

A search for narrow heavy resonances in dilepton final state with the CMS experiment at the LHC is presented. The data from the second LHC run with integrated luminosity 140 fb^-1 is used, collected in 2016−2018 in proton−proton collisions at √s = 13 TeV. Upper limits on production cross section of new narrow dilepton resonances are set.

Within the ATLAS Higgs boson working group (HWW), a study of events with two leptons in the h/H → WW(*) → lνlν decay channel in pp-collisions at 13 TeV with the ATLAS detector at the LHC is performed. The analysis uses complete data sample accumulated during 2015—2018 exposures which corresponds to integrated luminosity 139 fb⁻¹. Particular attention was paid to study forward going hadron jet properties. Such jets accompany Higgs boson production in the vector boson fusion mechanism. A comparison of two jet reconstruction algorithms, EMTopo and PFlow, is performed. The second algorithm is chosen for further analyses as more robust to conditions at high LHC luminosity. Jet kinematics is studied separately for exposures at different differential luminosities. The first results of the analysis of control regions of main backgrounds to heavy Higgs boson based on complete 13 TeV statistics are also given.

An upgraded version of the OGRAN—combined optical-acoustic gravitational wave detector has been investigated in a long-term operation mode. This installation, located at the Baksan Neutrino Observatory (BNO), INR RAS, is designed to work under the program for detecting collapsing stars in parallel with the neutrino detector—Baksan Underground Scintillation Telescope (BUST). Such joint search corresponds to the modern trend for a development of “multichannel astronomy”. In this work the effects of thermal relaxation OGRAN are experimentally investigated using passive and active thermal stabilization systems in the underground laboratory BNO PK-14.