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The strange mesons mixed research

Author: LiZuo
Tutor: LiDeMin
School: Zhengzhou University
Course: Theoretical Physics
Keywords: meson-meson mixing nonrelativistic constituent quark model 3P0 decay model
CLC: O572.33
Type: Master's thesis
Year: 2007
Downloads: 23
Quote: 0
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Abstract


In the framework of the meson-meson mixing and the nonrelativistic constituent quark model, it is found that the K（3P1） - K（P1） mixing angle is about±59°.Comparison of the theoretical predictions on the evaluated 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 theτdecay with the available experimental data strongly favors that the mixing angle is about+ 59°. In the presence of the b1（1235）,h1（1170）and K（P1） （with a massof about 1370 MeV） belonging to the 1P1 meson nonet, three different and complementary approaches, i.e., meson-meson mixing, nonrelativistic constituent quark model and Regge phenomenology, consistently suggest that the mass of the 1P1 ss|- state is about 1495.18MeV. Comparison of the predicted results with the available experimental information of the h1（1380） shows that without further confirmation on theh1（1380）, the assignment of the h1 （1380） as the ss|- member of the 1P1 meson nonet may be premature. Finally, the K（1D2）-K（3D2） mixing is discussed and tine K（1D2） and K（3D2）mixing angle is found to be about zero degree.

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CLC: > Mathematical sciences and chemical > Physics > Nuclear physics,high energy physics > High-energy physics > Particle types > Meson
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