NDLTD logo NDLTD Union Catalog and Global ETD Search

Global ETD Search

Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.

Results

Showing 1 to 20 of 100 for “"Coupling constant"”.

  1. Precision determination of the strong coupling constant

    Abbate, RiccardoMassachusetts Institute of Technology2012

    In this thesis we study the event shapes variable thrust. Event shape variables are observables that characterize the shape of the distribution of the final state particles of a reaction. We take advantage of the formalism of Soft Collinear Effective Theory (SCET), an effective theory of the strong …

    mit Repository record

  2. Running Coupling Constant and Transition From Low to High Energies in Quantum Chromodynamics

    Babansky, Alexander2019

    <p>The remarkable feature of QCD is that the coupling constant (the strength of the interaction) depends on the energy of the interacting particles. At high energies, the coupling constant vanishes and QCD becomes asymptotically free. However, at lower energy, the running coupling constant …

    odu Repository record

  3. A calorimetric measurement of the strong coupling constant in electron-positron annihilation at a center-of-mass energy of 91.6 GeV

    González Martirena, SaúlMassachusetts Institute of Technology1994

    Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1994.

    mit Repository record

  4. Quasi-Elastic Rayleigh Laser Light Scattering From Macromolecules, Electrophoretic Light Scattering, and the Molecular Zeeman Effect and Deuterium Quadrupole Coupling Constant in Methinophosphide

    Hartford, Steven LeopoldUniversity of Illinois at Urbana-Champaign2015

    Made available in DSpace on 2015-05-13T15:17:38Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7524316.PDF: 3756955 bytes, checksum: f5bb89e4088785950c93270c758703cb (MD5) Previous issue date: 1975

    uiuc Repository record

  5. Part I. Correlation of (carbon-13)-H Coupling Constant,j With the C-H Stretching Force Constant in Some Methyl Compounds. Part Ii. A Study of Duroquinone and Some of Its Nickel Complexes

    Puckett, Janice CarolUniversity of Illinois at Urbana-Champaign2014

    Made available in DSpace on 2014-12-09T17:35:56Z (GMT). No. of bitstreams: 1 6808198.pdf: 3155145 bytes, checksum: 19de64e2040791bd626f0184d35b71bf (MD5) Previous issue date: 1967

    uiuc Repository record

  6. Rigorous Bounds on Strong Interaction Coupling Constants

    Healy, James Bruce

    … absolute limits on the size of the renormalized coupling constant for π-π scattering. We improve the rigorous upper bound derived by Łukaszuk and Martin for the π⁰-π⁰ scattering amplitude at the symmetric point. Our principle new tool is the "parametric dispersion relation" of Auberson and Khuri. …

    rockefeller Repository record

  7. Magnetic resonance of cobalt(II) and iron(III): A Schiff's base and heme proteins

    Jiang, FashunUniversity of Illinois at Urbana-Champaign2011

    … In the first, the Co-59 nuclear quadrupole coupling constants for cobalt-doped nickelbis(benzoylacetone)ethylenediimine were determined by EPR spectroscopy. The three rotation axes for the three single crystals were not exactly perpendicular to each other, but their exact orientations were …

    uiuc Repository record

  8. Rashba-Effekt in niedrigdimensionalen InGaAs/InP Strukturen

    Knobbe, JensPublikationsserver der RWTH Aachen University2005

    In this thesis the spin-orbit coupling of electrons in low dimensional InGaAs/InP heterostructures, referred to as Rashba Effect, is investigated. It focuses on the basic features of the spin-orbit interaction in quasi one-dimensional structures (quantum wires) with typical widths of 150 to 1000 …

    aachen Repository record

  9. Representations of Cherednik algebras in positive characteristic

    Latour, FrédéricMassachusetts Institute of Technology2004

    … One is the "quantum" case, where "Planck's constant" is nonzero and generic irreducible representations have dimension pr, where r is the order of the cyclic group contained in the algebra. The other is the "classical" case, where "Planck's constant" is zero and generic irreducible …

    mit Repository record

  10. Nuclear magnetic resonance studies of molecular geometry and configuration

    Patel, MohamedCity of London Polytechnic1984

    … anisotropies in the indirect spin-spin couplings and chemical shifts, quadrupolar coupling constant, signs of indirect spin-spin coupling constants and conformational preferences of selected molecules by using isotropic and oriented solvents.

    london-metro Repository record

  11. Nmr and Polarization Microscopy Studies of Sodium Alkyl Carboxylate Solids and Melts

    Bonekamp, Jeffrey EdwardUniversity of Illinois at Urbana-Champaign2014

    … relaxation time, T(,1), and quadrupole coupling constant,

    uiuc Repository record

  12. Measurement of the gπNN(t) Form Factor

    Vansyoc, Kelly Gene2019

    … a unique opportunity to examine the strong coupling form factor <em>g</em>π<em>NN</em>(<em>t</em>). The measured cross sections were separated using a method similar to a Rosenbluth separation. For the extraction of <em>g</em>π<em>NN</em>(<em>t</em>), the Actor and Körner model [42] and a …

    odu Repository record

  13. A search for the reaction [mu]⁻ + Cu [arrow] e⁺ + Co

    Bryman, Douglas AndrewVirginia Polytechnic Institute and State University1972

    … this can be related to an upper limit on the coupling constant of this type of interaction relative to the vector coupling constant of (G<sub>Δ</sub> I Gᵥ) ≤ 0.10<sup>+0.05</sup><sub>-0.03</sub>.

    vt Repository record

  14. The diagramatical solution of the two-impurity Kondo problem

    Zhou, ChenVirginia Polytechnic Institute and State University1988

    … is calculated to fourth order in the coupling constant J for different regimes. The integral equations for the ground state energy are established and solved numerically. The two-stage Kondo effect and corresponding energy scales are found which agree with the scaling results.

    vt Repository record

  15. Aspects of the Ising and tricritical Ising models

    Giokas, PhilipKing's College London2013

    … conformal space approach. We show that the coupling constant undergoes significant renormalization in this scheme, and in <br/>particular the Ising model can be found as a fixed point for a finite value of the bare coupling constant. The renormalization group equations we find are of general …

    kings Repository record

  16. Complex Phase Behavior of Exotic Oxides: Optical Spectroscopy Studies

    Yoon, SeokhyunUniversity of Illinois at Urbana-Champaign2015

    … could estimate the in-plane spin-spin exchange coupling constant J&par;. Importantly, we found that Ca3Ru2O7 does not exhibit strong in-plane magnetic correlations above TN.

    uiuc Repository record

  17. Continuum structure in strong electromagnetic fields

    O'Connor, MichaelNot Specified1987

    … h=c=l. However, in explicit calculations, these constants are re-introduced using the prescription hc=197 Mev fm. When the coupling constant a is used, its value is taken as 1/137.

    cape-town Repository record

  18. Cosmology of hidden sector with Higgs portal

    Cabi, SerkanMassachusetts Institute of Technology2009

    … have improved the accuracy of the bounds on the coupling constant and give bounds on the Lagrangian parameters. Models with Abelian and non-Abelian gauge fields are also studied with relic density bounds, BBN and galactic dynamics constraints. Several discussions on phase transitions and …

    mit Repository record

  19. Paarproduktion schwerer Quarks in e+ e- -Kollisionen: QCD-Strahlungskorrekturen für die Quark-Antiquark-Beiträge zur Ordnung alpha s 2

    Leineweber, ThiloPublikationsserver der RWTH Aachen University2005

    … QCD corrections to second order in the strong coupling constant, i.e. to order alpha_s^2, for the process e^+ e^- -> Q Qbar are calculated. These are important contributions to the differential cross section of the reaction e^+ e- -> Q Qbar + X. The decay amplitude of a virtual Z-boson into a …

    aachen Repository record

  20. Measurement of Hyperfine Coupling Constants of the 5d²D₃/₂ and 5d²D₅/₂ Levels in Atomic Cesium Using Polarization Quantum Beat Spectroscopy

    Yei, Wo2019

    <p>Accurate measurements of hyperfine constants have revealed effects that can not be explained by a simple hydrogenic picture of the alkali atoms such as cesium [1-3]. More precise experimental results and theoretical treatments are in demand for the alkali elements, especially for atomic cesium …

    odu Repository record

Page 1 of 5