Double charmonium production in exclusive bottomonium decays |
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Authors: | V V Braguta A K Likhoded and A V Luchinsky |
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Institution: | 1.Institute for High Energy Physics,Protvino, Moscow oblast,Russia |
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Abstract: | Exclusive bottomonium decays leading to the production of charmonium pairs are considered. The respective decay widths are
calculatedwithin the approach of line-cone expansion for the amplitude and nonrelativistic QCD. It is shown that the production
of L
z
≠ 0 P-wave charmonium states is possible even in the leading-twist approximation. This means a violation of selection rules that
require the suppression of such decays. The reason for this violation is discussed in detail. |
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Keywords: | |
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