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String splitting and strong coupling meson decay.

A L Cotrone1, L Martucci, W Troost

  • 1Departament Estructura i Constituents de la Materia, Universitat de Barcelona and IFAE, Diagonal 647, E-08028 Barcelona, Spain.

Physical Review Letters
|May 23, 2006
PubMed
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High spin meson decay rates were calculated using gauge-string duality. This study found that in quantum chromodynamics (QCD), these decays are significantly suppressed under supergravity conditions.

Area of Science:

  • * Theoretical High Energy Physics
  • * Quantum Field Theory
  • * String Theory

Background:

  • * Meson decay is a fundamental process in particle physics.
  • * Understanding high spin meson decay is crucial for testing quantum chromodynamics (QCD).
  • * Gauge-string duality provides a powerful framework for studying strongly coupled quantum field theories.

Purpose of the Study:

  • * To calculate the decay rate of high spin mesons.
  • * To apply gauge-string theory to N=4 super Yang-Mills theory and large N QCD.
  • * To investigate the behavior of meson decays in the supergravity regime of QCD.

Main Methods:

  • * Employing the gauge-string theory correspondence.
  • * Calculating decay rates via the splitting of macroscopic strings intersecting D-branes.

Related Experiment Videos

  • * Analyzing results within N=4 super Yang-Mills theory and gravity duals of large N QCD.

    • Main Results:

    • * A method for calculating high spin meson decay rates using string theory was developed.
    • * The decay of high spin mesons in N=4 super Yang-Mills theory was studied.
    • * In large N QCD, under supergravity conditions, high spin meson decay is found to be heavily suppressed.

    Conclusions:

    • * Gauge-string duality offers a viable method for studying meson decays.
    • * The decay of high spin mesons in QCD is strongly suppressed in the supergravity limit.
    • * This research provides insights into the non-perturbative dynamics of quantum field theories.