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Strange axial-vector mesons mixing angle

De-Min Li, Zhen Li

hep-pharXiv:hep-ph/0606297

Abstract

The masses of the K1(3P1) and K1(1P1) are considered in a nonrelativistic constituent quark model, and the absolute value of the K1(3P1)-K1(1P1) mixing angle is determined to be about 59.29. Comparison of the theoretical predictions on the strong decay widths of the K1(1270) and K1(1400) in the 3P0 decay model as well as the production ratio of these two states in the τ decay between the available experimental data strongly favors that the K1(3P1)-K1(1P1) mixing angle is about +59.29.

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