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39,496 research outcomes, page 1 of 3,950
  • publication . Article . 2002
    Open Access
    Authors:
    M. Testa;
    Publisher: Elsevier BV

    Abstract Bare quark masses are estimated in terms of deep inelastic experimental data. The values mu = md ≈ 11 MeV and ms ≈ 274 MeV are obtained.

  • publication . Article . 2002
    Open Access
    Authors:
    Etienne Delacroix; Franz Gross;
    Publisher: Elsevier BV

    Abstract We have recalculated the nucleon pole diagram for pionic disintegration of deuterium, including the effects of the small components of the interacting nucleon by keeping all four invariants of the Blankenbecler and Cook vertex. We obtain the leading contributio...

  • publication . Article . Preprint . 2006
    Open Access
    Authors:
    Brodsky, Stanley J.; Gardner, Susan;
    Publisher: Elsevier BV

    The Sivers mechanism for the single-spin asymmetry in unpolarized lepton scattering from a transversely polarized nucleon is driven by the orbital angular momentum carried by its quark and gluon constituents, combined with QCD final-state interactions. Both quark and gl...

  • publication . Article . 2003
    Open Access
    Authors:
    K. Goulianos;
    Publisher: Elsevier BV

    Abstract A new statistical description of hardonic charged-particle multiplicity distributions is presented, which takes into account the associated neutral multiplicity and charge conservation. A simple gamma distribution is used to generate fictitious intermediate neu...

  • publication . Preprint . Article . 1998
    Open Access English
    Authors:
    R Pullirsch; K Rabitsch; T Wettig; H Markum;
    Project: FWF | Hadron-Hadron-Kräfte im R... (P 10468)

    We investigate the eigenvalue spectrum of the staggered Dirac matrix in SU(3) gauge theory and in full QCD on a $6^3\times 4$ lattice. As a measure of the fluctuation properties of the eigenvalues, we study the nearest-neighbor spacing distribution $P(s)$ for various va...

  • publication . Preprint . Article . 2004
    Open Access English
    Authors:
    Jonathan Link; Juan Eduardo Ramirez; Paolo Dini; stefano bianco; Dario Livio Menasce; Sandra Malvezzi; Abaz Kryemadhi; Luigi Benussi; Gabriele Chiodini; Robert Kutschke; ...

    Using data from the FOCUS (E831) experiment at Fermilab, we present a new measurement of the branching ratio for the Cabibbo-favored decay mode $D^0 \to K^-K^+\pi^-\pi^+$. From a sample of $2669 \pm 101$ fully reconstructed $D^0 \to K^-K^+\pi^-\pi^+$ events, we measure ...

  • publication . Article . Preprint . 1993
    Open Access
    Authors:
    Buchmüller, W.; Fodor, Z.;
    Publisher: Elsevier BV

    Comment: 8 pages, 4 figures, figure ps file can be obtained from the authors via bitnet, DESY 93-085

  • publication . Article . Other literature type . 1983
    Open Access
    Authors:
    Axenides, Minos; Brandenberger, Robert; Turner, Michael;
    Publisher: Elsevier BV

    Abstract We carefully investigate the development of axion perturbations while they are outside the horizon. Both in the case of an inflationary universe and in the standard big bang cosmology the main contribution to axion energy density fluctuations at horizon crossin...

  • publication . Other literature type . Article . 1967
    Open Access English
    Authors:
    N. Cabibbo; L. Maiani; G. Preparata;

    Abstract On the basis of the requirement of finite radiative corrections for leptonic decays, we propose the abandonment of the quark model for strong interactions, in favour of models based on integrally charged triplets. We discuss a model of this kind — the SUB model...

  • publication . Article . 2002
    Open Access
    Authors:
    D. Fick; G. Clausnitzer; W. Dürr; R. Fleischmann; H.M. Hofmann; K. Kilian;
    Publisher: Elsevier BV

    Abstract For the 6 Li(d,p) 7 Li reaction, where no j -dependence had been seen in the proton angular distribution, one can see a j -dependence in the angular distribution of the vector analyzing power. Compound nucleus effects are discussed.

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