Phasenverhalten von Polyethylen in Mischsystemen

The phase behavior of PE in mixed systems is studied in this thesis. Theoretical aspects: thermodynamics of polymer solutions, IPNs, polymerization-induced phase separation. PE in non-reactive systems: solvents, alkanes, mixed solvents. PE in reactive systems: polymerization with BPO, polymerization with DCPO, glass transition temperature, crystallinity.SIGLEAvailable from: <a href=http://ArchiMeD.uni-mainz.de/pub/2003/0051/diss.pdf target=NewWindow>http://ArchiMeD.uni-mainz.de/pub/2003/0051/diss.pdf</a> / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Muon reconstruction efficiency and momentum resolution of the ATLAS experiment in proton-proton collisions at root s = 7 TeV in 2010

This paper presents a study of the performance of the muon reconstruction in the analysis of proton–proton collisions at √s = 7 TeV at the LHC, recorded by the ATLAS detector in 2010. This performance is described in terms of reconstruction and isolation efficiencies and momentum resolutions for different classes of reconstructed muons. The results are obtained from an analysis of J/ψ meson and Z boson decays to dimuons, reconstructed from a data sample corresponding to an integrated luminosity of 40 pb⁻¹. The measured performance is compared to Monte Carlo predictions and deviations from the predicted performance are discussed.G. Aad … P. Jackson … L. Lee … a. Petridis … N. Soni … M. White .. The ATLAS Collaboratio

Search for supersymmetry in events with large missing transverse momentum, jets, and at least one tau lepton in 20 fb−1 of √s= 8 TeV proton-proton collision data with the ATLAS detector

© 2014, The Author(s). A search for supersymmetry (SUSY) in events with large missing transverse momentum, jets, at least one hadronically decaying tau lepton and zero or one additional light leptons (electron/muon), has been performed using 20.3fb−1of proton-proton collision data at √ s= 8 TeV recorded with the ATLAS detector at the Large Hadron Collider. No excess above the Standard Model background expectation is observed in the various signal regions and 95% confidence level upper limits on the visible cross section for new phenomena are set. The results of the analysis are interpreted in several SUSY scenarios, significantly extending previous limits obtained in the same final states. In the framework of minimal gauge-mediated SUSY breaking models, values of the SUSY breaking scale Λ below 63 TeV are excluded, independently of tan β. Exclusion limits are also derived for an mSUGRA/CMSSM model, in both the R-parity-conserving and R-parity-violating case. A further interpretation is presented in a framework of natural gauge mediation, in which the gluino is assumed to be the only light coloured sparticle and gluino masses below 1090 GeV are excluded

Study of heavy-flavor quarks produced in association with top-quark pairs at root s=7 TeV using the ATLAS detector

Contains fulltext : 127840.pdf (preprint version ) (Open Access