2,790 research outputs found
Legal opinion on a D eputy’s bill to amend the Act – Law on Proceedings before Administrative Courts and some other Acts (Sejm Paper No. 1351) (BAS‑1972/13A)
No full textThe opinion deals with the Deputy’s bill submitted in consequence of the adoption of the resolution of the Supreme Administrative Court concerning procedural capacity of the head of commune, mayor and president of town. According to the author, the purpose of the bill is justified and correct, but its provisions are internally inconsistent. The bill introduces changes in legislation by spot method, which deprives the system of consistency and internal logic
LHCb : The LHCb trigger system and its upgrade
No full textThe current LHCb trigger system consists of a hardware level, which reduces the LHC inelastic collision rate of 30 MHz to 1 MHz, at which the entire detector is read out. In a second level, implemented in a farm of 20k parallel-processing CPUs, the event rate is reduced to about 5 kHz. We review the performance of the LHCb trigger system during Run I of the LHC. Special attention is given to the use of multivariate analyses in the High Level Trigger. The major bottleneck for hadronic decays is the hardware trigger. LHCb plans a major upgrade of the detector and DAQ system in the LHC shutdown of 2018, enabling a purely software based trigger to process the full 30 MHz of inelastic collisions delivered by the LHC. We demonstrate that the planned architecture will be able to meet this challenge. We discuss the use of disk space in the trigger farm to buffer events while performing run-by-run detector calibrations, and the way this real time calibration and subsequent full event reconstruction will allow LHCb to deploy offline quality multivariate selections from the earliest stages of the trigger system. We discuss the cost-effectiveness of such a software-based approach with respect to alternatives relying on custom electronics. We discuss the particular importance of multivariate selections in the context of a signal-dominated production environment, and report the expected efficiencies and signal yields per unit luminosity in several key physics benchmarks the LHCb upgrade
Measurement of the CKM angle at LHCb
No full textThe document reports the first combined measurements of the CKM angle from LHCb, performed with b-hadron decays dominated by and tree-level amplitudes. Precision is achieved by averaging results from where , and , and . The measurements used 1 fb data sample collected in 2011 by LHCb. Using only decays results a best-fit value of = (71.1° is obtained. For the first time information from decays is included in the combination. When these results are included, the best-fit value becomes = 85.1° and we set confidence limits of [61.8; 67.8]° or [77.9; 92.4]° @68% CL and [43.8; 101.5]° @95% CL. All values are modulo 180°
Procesowa reprezentacja Skarbu Państwa a reprezentacja materialnoprawna
No full textSo far, the legal representation of the State Treasury has raised serious doubts in Polish law. They were eliminated by the Act of 16 December 2016 on the principles of state property management. It aligned the provisions on legal (material) representation of the State Treasury with those concerning representation before courts and other authorities
Observations of Bºs→ψ(2S)η and Bº(s)→ψ(2S)π+π- decays
No full textFirst observations of the B0s
→ψ(2S)η, B0 →ψ(2S)π
+
π
− and B0s
→ψ(2S)π
+
π
− decays are made
using a dataset corresponding to an integrated luminosity of 1.0 fb−1 collected by the LHCb experiment in
proton–proton collisions at a centre-of-mass energy of
√
s = 7 TeV. The ratios of the branching fractions
of each of the ψ(2S) modes with respect to the corresponding J/ψ decays are
B(B0s
→ψ(2S)η)
÷
B(B0s
→J/ψη)
= 0.83± 0.14 (stat)±0.12 (syst) ±0.02 (B),
;
B(B0→ψ(2S)π
+
π
−
)
÷
B(B0→J/ψπ
+
π
−
)
= 0.56± 0.07 (stat)±0.05 (syst)± 0.01 (B),
;
B(B0s
→ψ(2S)π
+
π
−
)
÷
B(B0s
→J/ψπ
+
π
−
)
= 0.34± 0.04 (stat)±0.03 (syst)± 0.01 (B),
where the third uncertainty corresponds to the uncertainties of the dilepton branching fractions of the J/ψ
and ψ(2S) meson decays
Nowelizacje przepisów części piątej Kodeksu postępowania cywilnego w latach 2017–2019 – ocena wprowadzonych regulacji
No full textSince the regulation of the basic rules regarding arbitration and the relationship between an arbitral tribunal and a state court in the fifth part of the Polish Civil Procedure Code in 2005, these provisions have been amended eight times so far. The last three amendments occurred in 2017–2019. In this study, the author cites the wording of the amended provisions, analyzes their importance and usefulness in practice a few years after their entry into force, and recalls the views concerning the new regulations expressed in the legal doctrine, and also points to a positive assessment of the introduced amendments and stresses that they enable the development of arbitration in Poland, primarily corporate and consumer arbitration.Od czasu uregulowania w części piątej Kodeksu postępowania cywilnego podstawowych zasad dotyczących arbitrażu i relacji między sądem polubownym a sądem państwowym w 2005 r. przepisy te były dotychczas nowelizowane osiem razy. Trzy ostatnie zmiany miały miejsce w latach 2017–2019. W niniejszym opracowaniu autor przytacza treść znowelizowanych przepisów, analizuje ich znaczenie i użyteczność w praktyce kilka lat po wejściu w życie oraz przywołuje poglądy przedstawicieli nauki odnoszące się do nowych regulacji, a także wskazuje na pozytywną ocenę wprowadzonych zmian i zaznacza, że umożliwiają one rozwój arbitrażu w Polsce, przede wszystkim korporacyjnego i konsumenckiego
Measurement of the polarization amplitudes and triple product asymmetries in the B0s → Φ Φ decay
No full text<p>Using 1.0 fb−1 of pp collision data collected at a centre-of-mass energy of s√=7 TeV with the LHCb detector, measurements of the polarization amplitudes, strong phase difference and triple product asymmetries in the B0s→ϕϕ decay mode are presented. The measured values are</p>
<p>|A0|2=0.365±0.022(stat)±0.012(syst),|A⊥|2=0.291±0.024(stat)±0.010(syst),cos(δ∥)=−0.844±0.068(stat)±0.029(syst),AU=−0.055±0.036(stat)±0.018(syst),AV=0.010±0.036(stat)±0.018(syst).</p>
Measurement of the CP violating phase φs in Bs0→J/f0(980)
No full textMeasurement of mixing-induced CP violation in decays is of prime importance in probing new physics. So far only the channel has been used. Here we report on a measurement using an LHCb data sample of 0.41 fb−1, in the CP odd eigenstate J/ψf0(980), where f0(980)→π+π−. A time-dependent fit of the data with the lifetime and the difference in widths of the heavy and light eigenstates constrained to the values obtained from yields a value of the CP violating phase of −0.44±0.44±0.02 rad, consistent with the Standard Model expectation
Measurement of the effective B_s^0 -> J/ψ K_S^0 lifetime
No full textThis paper reports the first measurement of the effective B_s^0 -> J/{\psi} K_S^0 lifetime and an updated measurement of its time-integrated branching fraction. Both measurements are performed with a data sample, corresponding to an integrated luminosity of 1.0 fb^{-1} of pp collisions, recorded by the LHCb experiment in 2011 at a centre-of-mass energy of 7 TeV. The results are: tau_J/{\psi}K_S^0 = 1.75 +/- 0.12 (stat) +/- 0.07 (syst) and BR(B_s^0 -> J/{\psi} K_S^0) = (1.97 +/- 0.23) X 10^{-5}.
For the latter measurement, the uncertainty includes both statistical and systematic sources
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