2,355 research outputs found
A theoretical model of a wake of a body towed in a stratified fluid at large Reynolds and Froude numbers
International audienceThe objective of the present paper is to develop a theoretical model describing the evolution of a turbulent wake behind a towed sphere in a stably stratified fluid at large Froude and Reynolds numbers. The wake flow is considered as a quasi two-dimensional (2-D) turbulent jet flow whose dynamics is governed by the momentum transfer from the mean flow to a quasi-2-D sinuous mode growing due to hydrodynamic instability. The model employs a quasi-linear approximation to describe this momentum transfer. The model scaling coefficients are defined with the use of available experimental data, and the performance of the model is verified by comparison with the results of a direct numerical simulation of a 2-D turbulent jet flow. The model prediction for the temporal development of the wake axis mean velocity is found to be in good agreement with the experimental data obtained by Spedding (1997)
The evolution of a thermocline effected by a turbulent stream
International audienceThe process of thermocline evolution under the action of turbulent stream in the upper layer is investigated in laboratory experiment in thermally stratified tank, the initial temperature profile with pronounced thermocline being similar to that observed in tropic seas. The mean velocity and turbulent energy spatial distributions have been shaped to model the hydrological conditions in strong oceanic currents or wind-induced drag currents. The experiment demonstrates the gradual deepening and transformation of thermocline in a case where no global instability took place (i.e., with Richardson numbers always exceeding 0.3-0.4). The process of thermocline evolution resulted also in recurring "bursts" of microstructure. A numerical experiment based on equations of semi-empirical theory of turbulence shows quantitative agreement with experimental data. Moreover, simple analytical solutions and numerical results show that a layer with marginal stability is formed with Richardson numbers being very close to the stability threshold, so that quite small disturbances in thermocline can result in appearance of internal waves and bursts of turbulence
Axial anomaly and mixing: from real to highly virtual photons
The relation for transition form factors of eta and eta' mesons is obtained
by combining the exact nonperturbative QCD sum rule, following from the
dispersive representation of axial anomaly, and quark-hadron duality. It is
valid at all virtual photon momenta and allows one to express the transition
form factors entirely in terms of meson decay constants. This relation is in a
good agreement with experimental data.Comment: 10 pages, 4 figures. Minor corrections, references added and updated;
to appear in Phys.Rev.
Dynamics of a small neutrally buoyant sphere in a fluid and targeting in Hamiltonian systems
We show that, even in the most favorable case, the motion of a small
spherical tracer suspended in a fluid of the same density may differ from the
corresponding motion of an ideal passive particle. We demonstrate furthermore
how its dynamics may be applied to target trajectories in Hamiltonian systems.Comment: See home page http://lec.ugr.es/~julya
Π¦ΠΈΡΡΠΎΠ²ΡΠ΅ ΡΠ΅Ρ Π½ΠΎΠ»ΠΎΠ³ΠΈΠΈ β Π±Π°Π·Π° ΡΠΈΡΡΠΎΠ²ΠΎΠΉ ΡΠΊΠΎΠ½ΠΎΠΌΠΈΠΊΠΈ ΡΠΎΠΏΠ»ΠΈΠ²ΠΎΠ·Π°ΠΏΡΠ°Π²ΠΎΡΠ½ΡΡ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠΎΠ² Π°ΡΡΠΎΠΏΠΎΡΡΠΎΠ² Π³ΡΠ°ΠΆΠ΄Π°Π½ΡΠΊΠΎΠΉ Π°Π²ΠΈΠ°ΡΠΈΠΈ
The article analyzes the main information automated control systems for refueling complexes, based on this analysis, the problems of the airport ground handling functioning are identified, the main of which are the inefficiency of managing stochastic processes that occur in failure situations, as well as the lack of automated control systems for the level of purity of aviation fuel from mechanical impurities and water. The way to upgrade Groundstar Inform GmbH - a single integrated airport management system by increasing the capabilities of the system by adding new components is proposed. A solution to the problem of multi-resource planning of aircraft refueling in high-intensity flight conditions, including failure situations, based on intelligent simulation and resource management is proposed. As well as from the point of view of optimizing the solution of business process objectives the development of planning algorithms using the mathematical apparatus of fuzzy modeling and control, fuzzy sets and fuzzy logic underlying the intelligent modeling of processes is proposed. The concept of an adaptive information management system of technological processes of a refueling complex for monitoring the purity of jet fuel, based on dynamic on-line monitoring of the existence of mechanical impurities and water is introduced. The article examines the elements of creating a "Smart Refueling Complex", in which intelligent business processes are combined into one whole due to the use of "smart" operational processes and technological equipment. The introduction of digital technologies, "industry 4.0" tools and trends in automation, digitalization and digitalization of the modern aviation fuel supply for civil aviation is becoming the basis of the digital economy of civil aviation refueling complexes.Π ΡΡΠ°ΡΡΠ΅ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ Π°Π½Π°Π»ΠΈΠ· ΠΎΡΠ½ΠΎΠ²Π½ΡΡ
ΠΈΠ½ΡΠΎΡΠΌΠ°ΡΠΈΠΎΠ½Π½ΡΡ
Π°Π²ΡΠΎΠΌΠ°ΡΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΡΠΈΡΡΠ΅ΠΌ ΡΠΏΡΠ°Π²Π»Π΅Π½ΠΈΡ ΡΠΎΠΏΠ»ΠΈΠ²ΠΎΠ·Π°ΠΏΡΠ°Π²ΠΎΡΠ½ΡΡ
ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠΎΠ² (Π΄Π°Π»Π΅Π΅ Π’ΠΠ), Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ ΠΊΠΎΡΠΎΡΠΎΠ³ΠΎ Π²ΡΡΠ²Π»Π΅Π½Ρ ΠΏΡΠΎΠ±Π»Π΅ΠΌΡ ΡΡΠ½ΠΊΡΠΈΠΎΠ½ΠΈΡΠΎΠ²Π°Π½ΠΈΡ Π½Π°Π·Π΅ΠΌΠ½ΠΎΠ³ΠΎ ΠΎΠ±ΡΠ»ΡΠΆΠΈΠ²Π°Π½ΠΈΡ Π°ΡΡΠΎΠΏΠΎΡΡΠ°, Π³Π»Π°Π²Π½ΡΠ΅ ΠΈΠ· ΠΊΠΎΡΠΎΡΡΡ
β Π½Π΅ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΡΠΏΡΠ°Π²Π»Π΅Π½ΠΈΡ ΡΡΠΎΡ
Π°ΡΡΠΈΡΠ΅ΡΠΊΠΈΠΌΠΈ ΠΏΡΠΎΡΠ΅ΡΡΠ°ΠΌΠΈ, ΠΊΠΎΡΠΎΡΡΠ΅ ΠΏΠΎΡΠ²Π»ΡΡΡΡΡ Π² ΡΡΠ»ΠΎΠ²ΠΈΡΡ
ΡΠ±ΠΎΠΉΠ½ΡΡ
ΡΠΈΡΡΠ°ΡΠΈΠΉ, Π° ΡΠ°ΠΊΠΆΠ΅ ΠΎΡΡΡΡΡΡΠ²ΠΈΠ΅ Π°Π²ΡΠΎΠΌΠ°ΡΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΡΠΈΡΡΠ΅ΠΌ ΡΠΏΡΠ°Π²Π»Π΅Π½ΠΈΡ ΡΡΠΎΠ²Π½Π΅ΠΌ ΡΠΈΡΡΠΎΡΡ Π°Π²ΠΈΠ°ΡΠΎΠΏΠ»ΠΈΠ²Π° ΠΎΡ ΠΌΠ΅Ρ
Π°Π½ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΏΡΠΈΠΌΠ΅ΡΠ΅ΠΉ ΠΈ Π²ΠΎΠ΄Ρ. ΠΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½ ΠΏΡΡΡ ΡΠ°ΡΡΠΈΡΠ΅Π½ΠΈΡ (Π°Π½Π³Π». upgrade) Groundstar Inform GmbH β Π΅Π΄ΠΈΠ½ΠΎΠΉ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ½ΠΎΠΉ ΡΠΈΡΡΠ΅ΠΌΡ ΡΠΏΡΠ°Π²Π»Π΅Π½ΠΈΡ Π°ΡΡΠΎΠΏΠΎΡΡΠΎΠΌ ΠΏΠΎΡΡΠ΅Π΄ΡΡΠ²ΠΎΠΌ ΡΠ²Π΅Π»ΠΈΡΠ΅Π½ΠΈΡ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΠ΅ΠΉ ΡΠΈΡΡΠ΅ΠΌΡ Π·Π° ΡΡΠ΅Ρ Π΄ΠΎΠ±Π°Π²Π»Π΅Π½ΠΈΡ Π½ΠΎΠ²ΡΡ
ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½ΡΠΎΠ². ΠΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½ΠΎ ΡΠ΅ΡΠ΅Π½ΠΈΠ΅ Π·Π°Π΄Π°ΡΠΈ ΠΌΡΠ»ΡΡΠΈΡΠ΅ΡΡΡΡΠ½ΠΎΠ³ΠΎ ΠΏΠ»Π°Π½ΠΈΡΠΎΠ²Π°Π½ΠΈΡ Π·Π°ΠΏΡΠ°Π²ΠΎΠΊ Π²ΠΎΠ·Π΄ΡΡΠ½ΡΡ
ΡΡΠ΄ΠΎΠ² (Π΄Π°Π»Π΅Π΅ ΠΠ‘) Π² ΡΡΠ»ΠΎΠ²ΠΈΡΡ
Π²ΡΡΠΎΠΊΠΎΠΉ ΠΈΠ½ΡΠ΅Π½ΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΏΠΎΠ»Π΅ΡΠΎΠ², Π² ΡΠΎΠΌ ΡΠΈΡΠ»Π΅ ΠΈ Π² ΡΡΠ»ΠΎΠ²ΠΈΡΡ
ΡΠ±ΠΎΠΉΠ½ΡΡ
ΡΠΈΡΡΠ°ΡΠΈΠΉ, Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ ΠΈΠ½ΡΠ΅Π»Π»Π΅ΠΊΡΡΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΠΈΠΌΠΈΡΠ°ΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΌΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΈ ΡΠΏΡΠ°Π²Π»Π΅Π½ΠΈΡ ΡΠ΅ΡΡΡΡΠ°ΠΌΠΈ, Π° ΡΠ°ΠΊΠΆΠ΅ Ρ ΡΠΎΡΠΊΠΈ Π·ΡΠ΅Π½ΠΈΡ ΠΎΠΏΡΠΈΠΌΠΈΠ·Π°ΡΠΈΠΈ ΡΠ΅ΡΠ΅Π½ΠΈΡ Π·Π°Π΄Π°Ρ Π±ΠΈΠ·Π½Π΅ΡΠΏΡΠΎΡΠ΅ΡΡΠ°. ΠΠΎΡΠ΅ΠΊΠΎΠΌΠ΅Π½Π΄ΠΎΠ²Π°Π½Π° ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠ° Π°Π»Π³ΠΎΡΠΈΡΠΌΠΎΠ² ΠΏΠ»Π°Π½ΠΈΡΠΎΠ²Π°Π½ΠΈΡ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΠΌΠ°ΡΠ΅ΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π°ΠΏΠΏΠ°ΡΠ°ΡΠ° Π½Π΅ΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΌΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΈ ΡΠΏΡΠ°Π²Π»Π΅Π½ΠΈΡ, Π½Π΅ΡΠ΅ΡΠΊΠΈΡ
ΠΌΠ½ΠΎΠΆΠ΅ΡΡΠ² ΠΈ Π½Π΅ΡΠ΅ΡΠΊΠΎΠΉ Π»ΠΎΠ³ΠΈΠΊΠΈ, Π»Π΅ΠΆΠ°ΡΠΈΡ
Π² ΠΎΡΠ½ΠΎΠ²Π΅ ΠΈΠ½ΡΠ΅Π»Π»Π΅ΠΊΡΡΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΠΌΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΏΡΠΎΡΠ΅ΡΡΠΎΠ². ΠΠ°Π΄Π°Π½Π° ΠΊΠΎΠ½ΡΠ΅ΠΏΡΠΈΡ Π°Π΄Π°ΠΏΡΠΈΠ²Π½ΠΎΠΉ ΠΈΠ½ΡΠΎΡΠΌΠ°ΡΠΈΠΎΠ½Π½ΠΎ-ΡΠΏΡΠ°Π²Π»ΡΡΡΠ΅ΠΉ ΡΠΈΡΡΠ΅ΠΌΡ ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΏΡΠΎΡΠ΅ΡΡΠΎΠ² Π’ΠΠ Π΄Π»Ρ ΠΊΠΎΠ½ΡΡΠΎΠ»Ρ ΡΠΈΡΡΠΎΡΡ Π°Π²ΠΈΠ°ΡΠΎΠΏΠ»ΠΈΠ²Π° Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ Π΄ΠΈΠ½Π°ΠΌΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ on-line (ΠΎΠ½Π»Π°ΠΉΠ½) ΠΌΠΎΠ½ΠΈΡΠΎΡΠΈΠ½Π³Π° Π½Π°Π»ΠΈΡΠΈΡ ΠΌΠ΅Ρ
Π°Π½ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΏΡΠΈΠΌΠ΅ΡΠ΅ΠΉ ΠΈ Π²ΠΎΠ΄Ρ Π² Π°Π²ΠΈΠ°ΡΠΎΠΏΠ»ΠΈΠ²Π΅. Π ΡΡΠ°ΡΡΠ΅ ΡΠ°ΡΡΠΌΠ°ΡΡΠΈΠ²Π°ΡΡΡΡ ΡΠ»Π΅ΠΌΠ΅Π½ΡΡ ΡΠΎΠ·Π΄Π°Π½ΠΈΡ Β«Π£ΠΌΠ½ΠΎΠ³ΠΎ Π’ΠΠΒ», Π² ΠΊΠΎΡΠΎΡΠΎΠΌ ΠΈΠ½ΡΠ΅Π»Π»Π΅ΠΊΡΡΠ°Π»ΡΠ½ΡΠ΅ Π±ΠΈΠ·Π½Π΅Ρ-ΠΏΡΠΎΡΠ΅ΡΡΡ ΡΠΎΠ΅Π΄ΠΈΠ½ΡΡΡΡΡ Π² ΠΎΠ΄Π½ΠΎ ΡΠ΅Π»ΠΎΠ΅ Π±Π»Π°Π³ΠΎΠ΄Π°ΡΡ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ Β«ΡΠΌΠ½ΡΡ
Β» ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΎΠ½Π½ΡΡ
ΠΏΡΠΎΡΠ΅ΡΡΠΎΠ² ΠΈ ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΎΠ±ΠΎΡΡΠ΄ΠΎΠ²Π°Π½ΠΈΡ. ΠΠ½Π΅Π΄ΡΠ΅Π½ΠΈΠ΅ ΡΠΈΡΡΠΎΠ²ΡΡ
ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΠΉ, ΠΈΠ½ΡΡΡΡΠΌΠ΅Π½ΡΠΎΠ² Β«ΠΈΠ½Π΄ΡΡΡΡΠΈΠΈ 4.0Β» ΠΈ ΡΠ΅Π½Π΄Π΅Π½ΡΠΈΠΈ Π°Π²ΡΠΎΠΌΠ°ΡΠΈΠ·Π°ΡΠΈΠΈ, ΡΠΈΡΡΠΎΠ²ΠΈΠ·Π°ΡΠΈΠΈ, Π΄ΠΈΠ΄ΠΆΠΈΡΠ°Π»ΠΈΠ·Π°ΡΠΈΠΈ ΡΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π½ΠΎΠ³ΠΎ Π°Π²ΠΈΠ°ΡΠΎΠΏΠ»ΠΈΠ²ΠΎΠΎΠ±Π΅ΡΠΏΠ΅ΡΠ΅Π½ΠΈΡ ΠΠ‘ ΠΠ ΡΡΠ°Π½ΠΎΠ²ΡΡΡΡ Π±Π°Π·ΠΎΠΉ ΡΠΈΡΡΠΎΠ²ΠΎΠΉ ΡΠΊΠΎΠ½ΠΎΠΌΠΈΠΊΠΈ ΡΠΎΠΏΠ»ΠΈΠ²ΠΎΠ·Π°ΠΏΡΠ°Π²ΠΎΡΠ½ΡΡ
ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠΎΠ² ΠΠ
Strangeness production in proton-proton and proton-nucleus collisions
In these lectures we discuss the investigation of the strange meson
production in proton-proton () and in proton-nucleus () reactions
within an effective Lagrangian model. The kaon production proceeds mainly via
the excitations of (1650), (1710), and (1720) resonant
intermediate nucleonic states, in the collision of two initial state nucleons.
Therefore, the strangeness production is expected to provide information about
the resonances lying at higher excitation energies. For beam energies very
close to the kaon production threshold the hyperon-proton final state
interaction effects are quite important. Thus, these studies provide a check on
the models of hyperon-nucleon interactions. The in-medium production of kaons
show strong sensitivity to the self energies of the intermediate mesons.Comment: 16 pages, 9 figures, Talk presented in the workshop on Hadron
Physics, Puri, India, March 7-17,200
Π‘ΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π½ΠΎΠ΅ ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½ΠΈΠ΅ ΠΎ Ρ ΠΈΠΌΠΈΠΎΠΈΠ½Π΄ΡΡΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠΉ ΠΏΠΎΠ»ΠΈΠ½Π΅ΠΉΡΠΎΠΏΠ°ΡΠΈΠΈ (ΠΎΠ±Π·ΠΎΡ Π»ΠΈΡΠ΅ΡΠ°ΡΡΡΡ)
This review focuses on Ρhemotherapy-induced polyneuropathy, which is a fairly common side effect and affects not only the quality of life of patients with malignancies, but can also lead to a change in patient management tactics, namely dose modification, delay of drug administration to complete cessation of treatment, which threatens the life of the patient. Ρhemotherapy-induced polyneuropathy is based on different mechanisms of damaging effects depending on the type of cytotoxic agent. The most neurotoxic drugs are platinum drugs, taxanes, periwinkle alkaloids, bortezomib, and thalidoβ mide. As a result of neurotoxic effects, damage occurs to thin and thick fibers of peripheral nerves. However, it is still a mystery why one patient develops manifestations of neurotoxicity and another does not. Therefore, the modern medical community is faced with the urgent question of further study of the mechanisms of development, risk factors, as well as the search for biomarkers and the development of prevention and treatment of Ρhemotherapy-induced polyneuropathy. The results of studies on the mechanism of onset, clinic, diagnosis, prevention and treatment of Ρhemotherapy-induced polyneuβ ropathies are summarized.Β ΠΠ±Π·ΠΎΡ ΠΏΠΎΡΠ²ΡΡΠ΅Π½ Ρ
ΠΈΠΌΠΈΠΎΠΈΠ½Π΄ΡΡΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠΉ ΠΏΠΎΠ»ΠΈΠ½Π΅ΠΉΡΠΎΠΏΠ°ΡΠΈΠΈ β ΡΠ°ΡΡΠΎΠΌΡ Π½Π΅ΠΆΠ΅Π»Π°ΡΠ΅Π»ΡΠ½ΠΎΠΌΡ ΡΠ²Π»Π΅Π½ΠΈΡ ΡΠ΅ΡΠ°ΠΏΠΈΠΈ Π·Π»ΠΎΠΊΠ°ΡΠ΅ΡΡβ Π²Π΅Π½Π½ΡΡ
Π½ΠΎΠ²ΠΎΠΎΠ±ΡΠ°Π·ΠΎΠ²Π°Π½ΠΈΠΉ, ΠΊΠΎΡΠΎΡΠΎΠ΅ ΡΠ½ΠΈΠΆΠ°Π΅Ρ ΠΊΠ°ΡΠ΅ΡΡΠ²ΠΎ ΠΆΠΈΠ·Π½ΠΈ ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠ² ΠΈ ΠΌΠΎΠΆΠ΅Ρ ΠΏΡΠΈΠ²ΠΎΠ΄ΠΈΡΡ ΠΊ ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΡ ΡΠ°ΠΊΡΠΈΠΊΠΈ Π²Π΅Π΄Π΅Π½ΠΈΡ: ΠΌΠΎΠ΄ΠΈΡΠΈΠΊΠ°ΡΠΈΠΈ Π΄ΠΎΠ·Ρ, ΠΎΡΡΡΠΎΡΠΊΠ΅ Π²Π²Π΅Π΄Π΅Π½ΠΈΡ ΠΏΡΠ΅ΠΏΠ°ΡΠ°ΡΠ° ΠΈ Π΄Π°ΠΆΠ΅ ΠΏΠΎΠ»Π½ΠΎΠΌΡ ΠΏΡΠ΅ΠΊΡΠ°ΡΠ΅Π½ΠΈΡ Π»Π΅ΡΠ΅Π½ΠΈΡ, ΡΡΠΎ ΡΡΠ°Π²ΠΈΡ ΠΏΠΎΠ΄ ΡΠ³ΡΠΎΠ·Ρ ΠΆΠΈΠ·Π½Ρ ΠΏΠ°ΡΠΈΠ΅Π½ΡΠ°. Π ΠΎΡΠ½ΠΎΠ²Π΅ Ρ
ΠΈΠΌΠΈΠΎΠΈΠ½Π΄ΡΡΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ ΠΏΠΎΠ²ΡΠ΅ΠΆΠ΄Π°ΡΡΠ΅Π³ΠΎ Π΄Π΅ΠΉΡΡΠ²ΠΈΡ ΠΏΠ΅ΡΠΈΡΠ΅ΡΠΈΡΠ΅ΡΠΊΠΈΡ
Π½Π΅ΡΠ²ΠΎΠ² Π»Π΅ΠΆΠ°Ρ ΡΠ°Π·Π½ΡΠ΅ ΠΌΠ΅Ρ
Π°Π½ΠΈΠ·ΠΌΡ Π² Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΠΈ ΠΎΡ Π²ΠΈΠ΄Π° ΡΠΈΡΠΎΡΠΎΠΊΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π°Π³Π΅Π½ΡΠ°. ΠΠ°ΠΈΠ±ΠΎΠ»Π΅Π΅ Π½Π΅ΠΉΡΠΎΡΠΎΠΊΡΠΈΡΠ½ΡΠΌΠΈ ΡΠ²Π»ΡΡΡΡΡ ΠΏΡΠ΅ΠΏΠ°ΡΠ°ΡΡ ΠΏΠ»Π°ΡΠΈΠ½Ρ, ΡΠ°ΠΊΡΠ°Π½Ρ, Π°Π»ΠΊΠ°Π»ΠΎΠΈΠ΄Ρ Π±Π°ΡΠ²ΠΈΠ½ΠΊΠ°, Π±ΠΎΡΡΠ΅Π·ΠΎΠΌΠΈΠ± ΠΈ ΡΠ°Π»ΠΈΠ΄ΠΎΠΌΠΈΠ΄. Π ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠ΅ Π½Π΅ΠΉΡΠΎΡΠΎΠΊΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π²ΠΎΠ·Π΄Π΅ΠΉβ ΡΡΠ²ΠΈΡ Π²ΠΎΠ·Π½ΠΈΠΊΠ°Π΅Ρ ΠΏΠΎΠ²ΡΠ΅ΠΆΠ΄Π΅Π½ΠΈΠ΅ ΡΠΎΠ½ΠΊΠΈΡ
ΠΈ ΡΠΎΠ»ΡΡΡΡ
Π²ΠΎΠ»ΠΎΠΊΠΎΠ½ ΠΏΠ΅ΡΠΈΡΠ΅ΡΠΈΡΠ΅ΡΠΊΠΈΡ
Π½Π΅ΡΠ²ΠΎΠ². ΠΠ΄Π½Π°ΠΊΠΎ Π΄ΠΎ ΡΠΈΡ
ΠΏΠΎΡ ΠΎΡΡΠ°Π΅ΡΡΡ Π·Π°Π³Π°Π΄β ΠΊΠΎΠΉ, ΠΏΠΎΡΠ΅ΠΌΡ Ρ ΠΎΠ΄Π½ΠΎΠ³ΠΎ ΠΏΠ°ΡΠΈΠ΅Π½ΡΠ° ΡΠ°Π·Π²ΠΈΠ²Π°ΡΡΡΡ ΠΏΡΠΎΡΠ²Π»Π΅Π½ΠΈΡ Π½Π΅ΠΉΡΠΎΡΠΎΠΊΡΠΈΡΠ½ΠΎΡΡΠΈ, Π° Ρ Π΄ΡΡΠ³ΠΎΠ³ΠΎ β Π½Π΅Ρ. ΠΠ΅ΡΠ΅Π΄ ΡΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π½ΡΠΌ ΠΌΠ΅Π΄ΠΈΡΠΈΠ½ΡΠΊΠΈΠΌ ΡΠΎΠΎΠ±ΡΠ΅ΡΡΠ²ΠΎΠΌ ΠΏΠΎ-ΠΏΡΠ΅ΠΆΠ½Π΅ΠΌΡ ΠΎΡΡΡΠΎ ΡΡΠΎΠΈΡ Π²ΠΎΠΏΡΠΎΡ ΠΈΠ·ΡΡΠ΅Π½ΠΈΡ ΠΌΠ΅Ρ
Π°Π½ΠΈΠ·ΠΌΠΎΠ² ΡΠ°Π·Π²ΠΈΡΠΈΡ, ΡΠ°ΠΊΡΠΎΡΠΎΠ² ΡΠΈΡΠΊΠ°, Π° ΡΠ°ΠΊΠΆΠ΅ ΠΏΠΎΠΈΡΠΊΠ° Π±ΠΈΠΎΠΌΠ°ΡΠΊΠ΅ΡΠΎΠ² ΠΈ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠΈ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ² ΠΏΡΠΎΡΠΈΠ»Π°ΠΊΡΠΈΠΊΠΈ, Π»Π΅ΡΠ΅Π½ΠΈΡ Ρ
ΠΈΠΌΠΈΠΎΠΈΠ½Π΄ΡΡΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠΉ ΠΏΠΎΠ»ΠΈΠ½Π΅ΠΉΡΠΎΠΏΠ°ΡΠΈΠΈ. ΠΠ±ΠΎΠ±ΡΠ΅Π½Ρ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ ΠΏΠΎ ΠΌΠ΅Ρ
Π°Π½ΠΈΠ·ΠΌΡ Π²ΠΎΠ·Π½ΠΈΠΊΠ½ΠΎΠ²Π΅Π½ΠΈΡ, ΠΊΠ»ΠΈΠ½ΠΈΠΊΠ΅, Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΠΊΠ΅, ΠΏΡΠΎΡΠΈΠ»Π°ΠΊΡΠΈΠΊΠ΅ ΠΈ Π»Π΅ΡΠ΅Π½ΠΈΡ Ρ
ΠΈΠΌΠΈΠΎΠΈΠ½Π΄ΡΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΠΏΠΎΠ»ΠΈΠ½Π΅ΠΉΡΠΎΠΏΠ°ΡΠΈΠΉ.
News from the Muon (g-2) Experiment at BNL
The magnetic moment anomaly a_mu = (g_mu - 2) / 2 of the positive muon has
been measured at the Brookhaven Alternating Gradient Synchrotron with an
uncertainty of 0.7 ppm. The new result, based on data taken in 2000, agrees
well with previous measurements. Standard Model evaluations currently differ
from the experimental result by 1.6 to 3.0 standard deviations.Comment: Talk presented at RADCOR - Loops and Legs 2002, Kloster Banz,
Germany, September 8-13 2002, to be published in Nuclear Physics B (Proc.
Suppl.); 5 pages, 3 figure
Measurement of the Negative Muon Anomalous Magnetic Moment to 0.7 ppm
The anomalous magnetic moment of the negative muon has been measured to a
precision of 0.7 parts per million (ppm) at the Brookhaven Alternating Gradient
Synchrotron. This result is based on data collected in 2001, and is over an
order of magnitude more precise than the previous measurement of the negative
muon. The result a_mu= 11 659 214(8)(3) \times 10^{-10} (0.7 ppm), where the
first uncertainty is statistical and the second is sytematic, is consistend
with previous measurements of the anomaly for the positive and negative muon.
The average for the muon anomaly a_{mu}(exp) = 11 659 208(6) \times 10^{-10}
(0.5ppm).Comment: 4 pages, 4 figures, submitted to Physical Review Letters, revised to
reflect referee comments. Text further revised to reflect additional referee
comments and a corrected Fig. 3 replaces the older versio
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