Heavy meson semileptonic decays in two dimensions in the large Nc
Abstract
We study QCD in 1+1 dimensions in the large Nc limit using light-front Hamiltonian perturbation theory in the 1/Nc expansion. We use this formalism to exactly compute hadronic transition matrix elements for arbitrary currents at leading order in 1/Nc, which we use to write the semileptonic differential decay rate of a heavy meson and its moments. We then compare with the results obtained using an effective field theory approach based on perturbative factorization, with the intention of better understanding quark-hadron duality. A very good numerical agreement is obtained between the exact result and the result using effective theories.
Keywords
Cite
@article{arxiv.hep-ph/0612121,
title = {Heavy meson semileptonic decays in two dimensions in the large Nc},
author = {Jorge Mondejar},
journal= {arXiv preprint arXiv:hep-ph/0612121},
year = {2008}
}
Comments
Talk given at the High-Energy Physics International Conference on Quantum Chromodynamics, 3-7 July (2006), Montpellier (France)