Triply heavy baryon mass estimated within pNRQCD
Abstract
Potential-NRQCD offers an effective-theory based approach to heavy-quark physics. While meson Q-anti_Q computations are tractable in pure alpha_s-perturbation theory, more complex many-body quark systems transcend it. A possibility inherited from nuclear physics is to employ the perturbative static potentials in a numerical diagonalization, eventually obtaining the exact lowest eigenvalue in each channel for a given-order perturbative potential. The power counting is manifest in the potential instead of the spectrum. The NNLO-potential for the 3-body problem is already available, so we have addressed triply-heavy baryons in this initial work with a computer-aided 2-parameter variational treatment.
Cite
@article{arxiv.1304.3636,
title = {Triply heavy baryon mass estimated within pNRQCD},
author = {Felipe J. Llanes-Estrada and Olga I. Pavlova and Richard Williams},
journal= {arXiv preprint arXiv:1304.3636},
year = {2013}
}
Comments
Proceedings of Excited QCD 2013, Bjelasnica Mountain, Sarajevo, February 3d-9th. 6 pages, 5 figures