arXiv:hep-ph/0002094·v2·High Energy Physics — Phenomenology
Relativistic Symmetry Suppresses Quark Spin-Orbit Splitting
Philip R. Page🇺🇸 · Terry Goldman🇺🇸 · Joseph. N. Ginocchio🇺🇸
Abstract
Experimental data indicate small spin-orbit splittings in hadrons. For heavy-light mesons we identify a relativistic symmetry that suppresses these splittings. We suggest an experimental test in electron-positron annihilation. Furthermore, we argue that the dynamics necessary for this symmetry are possible in QCD.
Comments: 16 pages, LaTeX. Two postscript figures. Final version to be published in Physical Review Letters