3,559 research outputs found
Opinion: Chemical--Mesoscopics..for the Mesoparticles Reactivity Explanation
The estimation of chemical particles reactivity and the determination of chemical reactions direction are the actual theme in new scientific trend - Chemical Mesoscopics. Paper includes the proposal about the using the theory of free energy linear dependence from physical organic chemistry and their applications for prognosis of reactions flowing. The semi-empiric constants is given according to mesoscopic physics definitions as well as the transformed Kolmogorov-Avrami equation is discussed. It is the development of Chemical Mesoscopics for organic reactivity estimation including nanostructures reactivit
Jet Physics in Heavy Ion Collisions with Compact Muon Solenoid detector at the LHC
The status of CMS jet simulations and physics analysis in heavy ion
collisions is presented. Jet reconstruction and high transverse momentum
particle tracking in the high multiplicity environment of heavy ion collisions
at the LHC using the CMS calorimetry and tracking system are described. The
Monte Carlo tools used to simulate jet quenching are discussed.Comment: Talk given at 5th International Conference on Physics and
Astrophysics of Quark Gluon Plasma, Salt Lake City, Kolkata, India, February
8-12, 2005; 4 pages including 4 figures as EPS-files; prepared using LaTeX
package for Journal of Physics
Two-dimensional discrete wavelet analysis of multiparticle event topology in heavy ion collisions
The event-by-event analysis of multiparticle production in high energy hadron
and nuclei collisions can be performed using the discrete wavelet
transformation. The ring-like and jet-like structures in two-dimensional
angular histograms are well extracted by wavelet analysis. For the first time
the method is applied to the jet-like events with background simulated by event
generators, which are developed to describe nucleus-nucleus collisions at LHC
energies. The jet positions are located quite well by the discrete wavelet
transformation of angular particle distribution even in presence of strong
background.Comment: 6 pages, 6 figure
Innovation Development Strategy for Enterprises of the Tatarstan Republic
© 2015, Asian Social Science. All rights reserved. The article deals with the issues of Tatarstan enterprises’ changeover to the innovative model of development. The authors describe the dynamics of innovation processes in Tatarstan on the basis of introduction of advanced technologies, analyze innovation activity indicators of enterprises for the recent ten years and classify innovatively-active enterprises according to the types of economic activity. The authors also give a detailed analysis of changes in the input costs pattern for innovation production manufacturing at the enterprises of Tatarstan, assess the dynamics of innovation production shipment by the enterprises for the recent five years. The authors provide some comparative data of the Tatarstan Republic and the regions of Volga Federal District and also provide some managerial recommendations on stimulating the innovation activities on the regional level
Chemical Mesoscopics Notions in the Explanation of Polymeric Materials Modification Mechanism with Participation of Metal Carbon Mesocomposites
The paper is dedicated to the consideration of the chemical mesoscopics notions application for the explanation of polymeric materials modification mechanism by the metal carbon mesoscopic composites. The main peculiarities of these nanosized particles are following: a) the presence of unpaired electrons on the carbon cover; b) the structure of carbon cover consists from poly acetylene and carbine fragments; c) the atomic magnetic moment of inner metal is equaled to more than 1,3 μB. The metal carbon mesocomposites activity depends on the medium and conditions influence because of the possible changes of the phase coherency and quantization of negative charges
Photon Physics in Heavy Ion Collisions at the LHC
Various pion and photon production mechanisms in high-energy nuclear
collisions at RHIC and LHC are discussed. Comparison with RHIC data is done
whenever possible. The prospect of using electromagnetic probes to characterize
quark-gluon plasma formation is assessed.Comment: Writeup of the working group "Photon Physics" for the CERN Yellow
Report on "Hard Probes in Heavy Ion Collisions at the LHC", 134 pages. One
figure added in chapter 5 (comparison with PHENIX data). Some figures and
correponding text corrected in chapter 6 (off-chemical equilibrium thermal
photon rates). Some figures modified in chapter 7 (off-chemical equilibrium
photon rates) and comparison with PHENIX data adde
Hard probes in heavy ion collisions at the LHC: heavy flavour physics
We present the results from the heavy quarks and quarkonia working group.
This report gives benchmark heavy quark and quarkonium cross sections for
and collisions at the LHC against which the rates can be compared in
the study of the quark-gluon plasma. We also provide an assessment of the
theoretical uncertainties in these benchmarks. We then discuss some of the cold
matter effects on quarkonia production, including nuclear absorption,
scattering by produced hadrons, and energy loss in the medium. Hot matter
effects that could reduce the observed quarkonium rates such as color screening
and thermal activation are then discussed. Possible quarkonium enhancement
through coalescence of uncorrelated heavy quarks and antiquarks is also
described. Finally, we discuss the capabilities of the LHC detectors to measure
heavy quarks and quarkonia as well as the Monte Carlo generators used in the
data analysis.Comment: 126 pages Latex; 96 figures included. Subgroup report, to appear in
the CERN Yellow Book of the workshop: Hard Probes in Heavy Ion Collisions at
the LHC. See also http://a.home.cern.ch/f/frixione/www/hvq.html for a version
with better quality for a few plot
Observation of exotic meson production in the reaction at 18 GeV/c
An amplitude analysis of an exclusive sample of 5765 events from the reaction
at 18 GeV/c is described. The
production is dominated by natural parity exchange and by
three partial waves: those with and . A
mass-dependent analysis of the partial-wave amplitudes indicates the production
of the meson as well as the meson, observed for the
first time decaying to . The dominant, exotic
(non- partial wave is shown to be resonant with a mass of
GeV/c^2 and a width of GeV/c^2 . This exotic state, the , is produced with a
dependence which is different from that of the meson, indicating
differences between the production mechanisms for the two states.Comment: 5 pages with 4 figure
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