Possible Evidence for a Chiral Particle D1chi, Axial-Vector in the D Meson System
Daiki Ito, Muneyuki Ishida, Shin Ishida, Toshihiko Komada, Hiroshi Tonooka, Kenji Yamada
Abstract
In the covariant level-classification scheme of hadrons proposed recently, the existence of "chiral particles", scalar and axial-vector mesons as the partners of the ground-state pseudo-scalar and vector mesons, respectively, were predicted in the D and B meson systems, realizing a linear representation of chiral symmetry. In this work we reanalyze the D* pi mass spectra obtained through the Upsilon (4S) and Z0 decays to show a possibility for the D1chi.
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