Гомельский государственный технический университет имени П.О.Сухого

Новые поступления электронной библиотеки

Babich, A. A.

The class of models in which the Higgs field is a part of gauge fields in higher dimensions, the Higgs sector has been controlled by the gauge principle is discussed. The difference between the Higgs particle and gauge bosons originates from the structure of the extra-dimensional space. This scenario is called as the Gauge­-Higgs Unification.

2023-02-17
Chernichenko, Yu. D.

The new relativistic form factor of the relativistic two-particle bound system in the case of scalar current is obtained. Consider­ation is conducted within the framework of relativistic quasipotential approach on the basis of covariant Hamiltonian formulation of quantum field theory by transition to the three-dimensional rela­tivistic configurational representation in the case of two interacting relativistic particles with arbitrary masses.

2023-02-17
Andreev, V. V., Gavrish, V. Yu.

We develop MES-techniques for more efficient calculating of scat­tering amplitudes involving both massive fermions of an arbitrary polarization and massless fermions in quantum field theories. The purpose of this work is to calculation matrix elements of fermions with spin 1/2.

2023-02-17
Pankov, A. A., Serenkova, I. A., Tsytrinov, A. V., Pankov, I. A.

Numerous non-standard dynamics are described by contact-like effective interactions that can manifest themselves in e+e- collisions only through deviations of the observables (cross sections, asymme­tries) from the Standard Model predictions. If such a deviation were observed, it would be important to identify the actual source among the possible non-standard interactions as many different new
physics scenarios may lead to very similar experimental signatures. Here we study the possibility of uniquely identifying the indirect effects of s-channel sneutrino exchange, as predicted by supersymmetric theories with R-parity violation, against other new physics scenarios in process e+e- — µ+µ- at the International Linear Col­lider. To evaluate the identification reach on sneutrino exchange, we use as basic observable a double polarization asymmetry, A doubie-Also, we examine the effects of neutrino and electron mixing with exotic heavy leptons in the process e+e- — W+W- within E6 models, in particular, the possibility of uniquely distinguishing and identifying such effects ofheavy neutral lepton exchange from Z —Z’ mixing.

2023-02-17
Khandramai, V., Prokopenko, D.

We consider computational problems in the framework of non­ power Analityc Perturbation Theory and Fractional Analytic Per­turbation Theory that are the generalization of the standard QCD perturbation theory. The singularity-free, finite couplings Av(Q2), v ( s) appear in these approaches as analytic images of the standard QCD coupling powers avs(Q2) in the Euclidean and Minkowski do­mains, respectively. We provide a package "FAPT" based on the system Mathematica for QCD calculations of the images Av(Q2), v(s) u p t o N3LO of renormalization group evolution. Application of these approaches to Bjorken sum rule analysis and Q2 -evolution of higher twist µ p-n is considered.

2023-02-17

Представлены практические работы, способствующие закреплению знаний в области экологии и энергосбережения. Для студентов специальности 1-36 12 01 «Проектирование и производство сельскохозяйственной техники» дневной и заочной форм обучения.

2023-02-17
Timoshin, E. S., Timoshin, S. I.
2023-02-17

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