Jagiellonian University

About: Jagiellonian University is a education organization based out in Krakow, Poland. It is known for research contribution in the topics: Population & Catalysis. The organization has 17438 authors who have published 44092 publications receiving 862633 citations. The organization is also known as: Academia Cracoviensis & Akademia Krakowska.

Measurement of the inclusive jet cross-section in proton-proton collisions at √s=7 $$ TeV using 4.5 fb−1 of data with the ATLAS detector

Abstract: The inclusive jet cross-section is measured in proton-proton collisions at a centre-of-mass energy of 7 TeV using a data set corresponding to an integrated luminosity of 4.5 fb−1 collected with the ATLAS detector at the Large Hadron Collider in 2011. Jets are identified using the anti-k t algorithm with radius parameter values of 0.4 and 0.6. The double-differential cross-sections are presented as a function of the jet transverse momentum and the jet rapidity, covering jet transverse momenta from 100 GeV to 2 TeV. Next-to-leading-order QCD calculations corrected for non-perturbative effects and electroweak effects, as well as Monte Carlo simulations with next-to-leading-order matrix elements interfaced to parton showering, are compared to the measured cross-sections. A quantitative comparison of the measured cross-sections to the QCD calculations using several sets of parton distribution functions is performed.

Trust and Emerging Democracy: Lessons from Poland

Abstract: The former communist societies of Eastern Central Europe (e.g. Poland) repeatedly experience barriers and blockades on the road toward an open, democratic, market society of the Western type. The author claims that most of the problems are due to the deficiency of cultural resources, the central of which is trust. A theory of trust is proposed, informed by the author's earlier work on `social becoming'. The `culture of distrust' is found to pervade Polish society at all levels of social life. Part of that syndrome derives from the legacy of real socialism, but more attention should be focused on current conditions: the new `risk environments', widespread anomie, inefficiency of political elites, and an enhanced feeling of relative deprivation after revolutionary elation and unrealistic hopes. To restore trust, an indispensable component of robust social tissue, the consistency of reforms must be safeguarded, the rule of law meticulously observed, integration with Western democracies speeded up and trust i...

Search for axionlike dark matter through nuclear spin precession in electric and magnetic fields

Abstract: We report on a search for ultra-low-mass axion-like dark matter by analysing the ratio of the spinprecession frequencies of stored ultracold neutrons and 199Hg atoms for an axion-induced oscillating electric dipole moment of the neutron and an axion-wind spin-precession effect. No signal consistent with dark matter is observed for the axion mass range 1024 eV ma 10 17 eV. Our null result sets the first laboratory constraints on the coupling of axion dark matter to gluons, which improve on astrophysical limits by up to 3 orders of magnitude, and also improves on previous laboratory constraints on the axion coupling to nucleons by up to a factor of 40.

Rényi Extrapolation of Shannon Entropy

Abstract: Relations between Shannon entropy and Renyi entropies of integer order are discussed. For any N-point discrete probability distribution for which the Renyi entropies of order two and three are known, we provide a lower and an upper bound for the Shannon entropy. The average of both bounds provide an explicit extrapolation for this quantity. These results imply relations between the von Neumann entropy of a mixed quantum state, its linear entropy and traces.