Relativistic Symmetry Suppresses Quark Spin-Orbit Splitting

PHYSICAL REVIEW LETTERS, no. 2 (2001): 204-207

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摘要

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.

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