62 research outputs found
Гарантії здійснення та захисту права власності внутрішньо переміщених осіб
The author has researched property relations of internally displaced persons, the peculiarities of which are determined by their legal status and the lack of sufficient legislative regulation to protect their property status. It has been emphasized that the realization of property rights occurs through the will and actions of the owner, which must fully comply with legal requirements, because the right of the owner to actions and the actions themselves – differ from each other. The difference between the content of a subjective right and its realization is, first of all, that the content of a subjective right covers only the possible behavior of an authorized person, and the realization of the right is a real, concrete action that leads to legal consequences. Therefore, the realization of property rights by internally displaced persons is absolute, i.e. absolute civil rights apply to an indefinite number of persons, except for the right of the owner.
The legal categories of “realization”, “protection” and “defense” have been analyzed as integral components of the property right of internally displaced persons. It has been stated that protection is the category of the normal state of existence of the subjective right, and defense is the category of the subjective right in a violated state.
It has been proved that in most cases people who have left their place of residence due to armed conflict or other forms of violence do not have a real opportunity to realize actual and sometimes legal (for example, due to the lack of proper documents on the property) possession. It indicates the need to introduce guarantees that will ensure not only the realization of property rights by internally displaced persons, but also the safety of their property. It has been offered to understand the guarantees of property rights of internally displaced persons as a set of methods, means and procedures aimed at ensuring the realization of their property rights.
The author has formulated own definition and has suggested the classification of guarantees of property rights of internally displaced persons, with their division into general and special, as well as guarantees of the realization of the rights and guarantees of protection.Досліджено відносини власності внутрішньо переміщених осіб, особливості яких обумовлюються їх правовим статусом та відсутністю достатньої законодавчої регламентації захисту їх майнового становища. Здійснено аналіз правових категорій «здійснення», «охорона» та «захист» як невід’ємних складових права власності внутрішньо переміщених осіб. Надано визначення та презентовано класифікацію гарантій права власності внутрішньо переміщених осіб, запропоновано їх поділ на загальні та спеціальні, а також на гарантії здійснення і гарантії захисту
Advances in quantum metrology
The statistical error in any estimation can be reduced by repeating the measurement and averaging the results. The central limit theorem implies that the reduction is proportional to the square root of the number of repetitions. Quantum metrology is the use of quantum techniques such as entanglement to yield higher statistical precision than purely classical approaches. In this Review, we analyse some of the most promising recent developments of this research field and point out some of the new experiments. We then look at one of the major new trends of the field: analyses of the effects of noise and experimental imperfections
Measurements of the branching fractions for decays at Belle II
This paper reports a study of decays using
fb of data collected during 2019--2020 by the Belle II experiment at the
SuperKEKB asymmetric-energy collider, corresponding to events. We find , ,
, and signal events in the decay modes , ,
, and , respectively. The uncertainties quoted for the
signal yield are statistical only. We report the branching fractions of these
decays: where the first
uncertainty is statistical, and the second is systematic. The results are
consistent with world-average values
Measurement of the integrated luminosity of the Phase 2 data of the Belle II experiment
From April to July 2018, a data sample at the peak energy of the γ(4S) resonance was collected with the Belle II detector at the SuperKEKB electron-positron collider. This is the first data sample of the Belle II experiment. Using Bhabha and digamma events, we measure the integrated luminosity of the data sample to be (496.3 ± 0.3 ± 3.0) pb-1, where the first uncertainty is statistical and the second is systematic. This work provides a basis for future luminosity measurements at Belle II
Measurement of the branching fraction for the decay at Belle II
We report a measurement of the branching fraction of decays, where or
, using electron-positron collisions recorded at an energy at or near
the mass and corresponding to an integrated luminosity of
fb. The data was collected during 2019--2021 by the Belle II experiment
at the SuperKEKB asymmetric-energy collider. We reconstruct
candidates in the , , and
final states. The signal yields with statistical uncertainties are ,
, and for the decays , , and , respectively.
We measure the branching fractions of these decays for the entire range of the
dilepton mass, excluding the very low mass region to suppress the background and regions compatible with decays
of charmonium resonances, to be \begin{equation} {\cal B}(B \to
K^{\ast}(892)\mu^+\mu^-) = (1.19 \pm 0.31 ^{+0.08}_{-0.07}) \times 10^{-6},
{\cal B}(B \to K^{\ast}(892)e^+e^-) = (1.42 \pm 0.48 \pm 0.09)\times 10^{-6},
{\cal B}(B \to K^{\ast}(892)\ell^+\ell^-) = (1.25 \pm 0.30 ^{+0.08}_{-0.07})
\times 10^{-6}, \end{equation} where the first and second uncertainties are
statistical and systematic, respectively. These results, limited by sample
size, are the first measurements of branching
fractions from the Belle II experiment
Angular analysis of decays reconstructed in 2019, 2020, and 2021 Belle II data
We report on a Belle II measurement of the branching fraction
(), longitudinal polarization fraction (), and CP asymmetry
() of decays. We reconstruct decays in a
sample of SuperKEKB electron-positron collisions collected by the Belle II
experiment in 2019, 2020, and 2021 at the (4S) resonance and
corresponding to 190 fb of integrated luminosity. We fit the
distributions of the difference between expected and observed candidate
energy, continuum-suppression discriminant, dipion masses, and decay angles of
the selected samples, to determine a signal yield of events. The
signal yields are corrected for efficiencies determined from simulation and
control data samples to obtain $\mathcal{B}(B^+ \to \rho^+\rho^0) = [23.2^{+\
2.2}_{-\ 2.1} (\rm stat) \pm 2.7 (\rm syst)]\times 10^{-6}f_L = 0.943 ^{+\
0.035}_{-\ 0.033} (\rm stat)\pm 0.027(\rm syst)\mathcal{A}_{CP}=-0.069
\pm 0.068(\rm stat) \pm 0.060 (\rm syst)\mathcal{A}_{CP}B^+\to
\rho^+\rho^0$ decays reported by Belle II
Determination of from untagged decays using 2019-2021 Belle II data
We present an analysis of the charmless semileptonic decay , where , from 198.0 million pairs of
mesons recorded by the Belle II detector at the SuperKEKB
electron-positron collider. The decay is reconstructed without identifying the
partner meson. The partial branching fractions are measured independently
for and as functions of
(momentum transfer squared), using 3896 and
5466 decays. The total branching fraction is
found to be for decays, where the uncertainties are statistical and
systematic, respectively. By fitting the measured partial branching fractions
as functions of , together with constraints on the nonperturbative
hadronic contribution from lattice QCD calculations, the magnitude of the
Cabibbo-Kobayashi-Maskawa matrix element , , is extracted. Here, the first uncertainty is
statistical, the second is systematic and the third is theoretical
Measurement of the branching fractions and asymmetries of and decays in 2019-2021 Belle II data
We determine the branching fractions and asymmetries
of the decays and . The results are based on a data set containing 198
million bottom-antibottom meson pairs corresponding to an integrated luminosity
of recorded by the Belle II detector in energy-asymmetric
electron-positron collisions at the resonance. We measure
, , , and , where the first uncertainties are
statistical and the second are systematic. These results improve a previous
Belle II measurement and agree with the world averages
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