Browsing Τμήμα Φυσικής / Department of Physics by Title
Now showing items 474-493 of 1411
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Article
K-string tensions in SU(N) gauge theories
(2002)In the context of four-dimensional SU(AO gauge theories, we study the spectrum of the confining strings. We compute, for the SU(6) gauge theory formulated on a lattice, the three independent string tensions σk related to ...
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Article
K-string tensions in SU(N) gauge theories
(2002)In the context of four-dimensional SU(N) gauge theories, we study the spectrum of the confining strings. We compute, for the SU(6) gauge theory formulated on a lattice, the three independent string tensions σk related to ...
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Article
Kinematic evidence for top quark pair production in W + multijet events in pp¯ collisions at √s = 1.8 TeV
(1995)We present a study of W+multijet events that compares the kinematics of the observed events with expectations from direct QCD W+jet production and from production and decay of top quark pairs. The data were collected in ...
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Article
Kinematics of tt̄ events at CDF
(1999)The kinematic properties of tt̄ events are studied in the W+ multijet channel using data collected with the CDF detector during the 1992-1995 runs at the Fermilab Tevatron collider corresponding to an integrated luminosity ...
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Article
Kinetic and crystallographic studies of glucopyranose spirohydantoin and glucopyranosylamine analogs inhibitors of glycogen phosphorylase
(2005)Glycogen phosphorylase (GP) is currently exploited as a target for inhibition of hepatic glycogenolysis under high glucose conditions. Spirohydantoin of glucopyranose and N-acetyl-β-D-glucopyranosylamine have been identified ...
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Article
Kinetics, in silico docking, molecular dynamics, and MM-GBSA binding studies on prototype indirubins, KT5720, and staurosporine as phosphorylase kinase ATP-binding site inhibitors: The role of water molecules examined
(2011)With an aim toward glycogenolysis control in Type 2 diabetes, we have investigated via kinetic experiments and computation the potential of indirubin (IC 50 > 50 μM), indirubin-3'-oxime (IC 50 = 144 nM), KT5720 (K i = 18.4 ...
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Article
KS0 and Λ0 production studies in pp̄ collisions at s=1800 and 630 GeV
(2005)We present a study of the production of KS0 and Λ0 in inelastic pp̄ collisions at s=1800 and 630 GeV using data collected by the CDF experiment at the Fermilab Tevatron. Analyses of KS0 and Λ0 multiplicity and transverse ...
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Article
K∗(892)+ production in proton-proton collisions at Ebeam=3.5 GeV
(2015)We present results on the K∗(892)+ production in proton-proton collisions at a beam energy of E=3.5 GeV, which is hitherto the lowest energy at which this mesonic resonance has been observed in nucleon-nucleon reactions. ...
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Article
Lagrangian of superfluid He3
(1988)This paper presents a phenomenological Lagrangian that fully describes the dynamics of any homogeneous phase of superfluid He3, unitary or not, omitting relaxation. This Lagrangian is built by using the concept of a local ...
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Article
Lambda hyperon production and polarization in collisions of p(3.5 GeV)+Nb
(2014)Results on Λ hyperon production are reported for collisions of p(3.5 GeV) + Nb, studied with the High-Acceptance Di-Electron Spectrometer (HADES) at SIS18 at GSI Helmholtzzentrum for Heavy-Ion Research, Darmstadt. The ...
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Conference Object
Landau level physics in a quantum well: New singular features in magnetization and violations of de Haas-van Alphen periodicities
(2011)Analytical calculations based on a Landau Level (LL) picture are reported for an interface (with a finite-width Quantum Well (QW)) and for a fully three-dimensional charged quantum electronic system in an external magnetic ...
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Article
Laplacian gauge gluon propagator in SU(Nc)
(2002)We examine the gluon propagator in the Laplacian gauge in quenched lattice QCD as a function of the number of colors. We observe a weak dependence on Nc over the whole momentum range. This implies an almost Nc-independent ...
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Article
Large ultrafast optical nonlinearities in As-rich GaAs
(1994)The measurement of large Ultrafast bandgap-resonant optical nonlinearities in As-rich samples of GaAs that have been grown at low temperatures is reported. Light-induced refractive index changes of magnitude greater than ...
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Article
Large Wilson loops with overlap and clover fermions: Two-loop evaluation of the b-quark mass shift and the quark-antiquark potential
(2008)We compute, to two loops in perturbation theory, the fermionic contribution to rectangular R × T Wilson loops, for different values of R and T. We use the overlap fermionic action. We also employ the clover action, for ...
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Article
Laser induced micro-photoluminescence of marble and application to authenticity testing of ancient objects
(2008)For the last 70 years, the authenticity of disputable marble objects has been tested by using a black light lamp. According to empirical observations "fresh marbles are purple while ancient ones are blue under the lamp". ...
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Article
Laser photothermal diagnostics of genuine and counterfeit British and United States banknotes
(1997)Laser-induced, frequency-scanned IR photothermal radiometry was used to investigate the thermophysical properties of the paper on which several genuine and counterfeit British (pound 10) and U.S. ($50, $100) currency bills ...
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Article
Laser-induced photothermal reflectance investigation of silicon damaged by arsenic ion implantation: A temperature study
(1989)Laser-induced photothermal reflectance (PTR) measurements of arsenic-implanted silicon are reported. The photothermal signals as a function of temperature are presented for both annealed and as-implanted silicon films. The ...
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Article
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Conference Object
A lattice calculation of parton distributions
(Proceedings of Science (PoS), 2016)We present results for the x dependence of the unpolarized, helicity, and transversity isovector quark distributions in the proton using lattice QCD, employing the method of quasi-distributions proposed by Ji in 2013. ...
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Article
Lattice calculation of parton distributions
(2015)We report on our exploratory study for the direct evaluation of the parton distribution functions from lattice QCD, based on a recently proposed new approach. We present encouraging results using N f = 2 + 1 + 1 twisted ...