Radiative Decays of q bar q Chiral States in the U~(12)-Scheme

2006/12/27 by Tomohito Maeda, Maeda, Tomohito, Kenji Yamada +5
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/0612338

12 pages, based on a talk presented at the IHEP Seminar on Perspectives for Studies of Chiral Particles at BES, Institute of High Energy Physics, Beijing, February 23-24, 2006, KEK Proceedings 2006-8, November 2006

arxiv created 2006/12/27 · arxiv updated 2009/12/01

Abstract

The radiative transitions between ground-states (GS) of light q bar q mesons are investigated in the U~(12)-scheme. In this scheme the rich decay-spectra are offered even in transition between GS due to the appearance of chiral states. As a result the radiative decay widths of the ordinary V -> P gamma process are well reproduced, and furthermore, the predicted width of b₁(1235) -> pi gamma process (Gamma_theor=229 keV), by assigning b₁(1235) as a member of the ³S₁ chiral states A^(E), is in good agreement with experimental one (Gamma_exp =230 +- 60 keV). From this results it is indicated that b₁(1235) meson, classified as ¹P₁ state in conventional non-relativistic (NR) classification scheme, is a good candidate of chiral state in the U~(12)-scheme. The other radiative transition widths of some chiral states are also predicted. Accordingly the predicted values given here, will provide useful insights in their search at BES.

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