Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-02-03
Phys.Rev. D80 (2009) 094008
Physics
High Energy Physics
High Energy Physics - Phenomenology
Minor changes, some references added
Scientific paper
This paper is devoted to the leading twist exclusive bottomonia decays with double charmonium in the final state. Using models of the twist-2 charmonia distribution amplitudes the widths of these decays are calculated within light cone formalism. In addition, the processes under consideration are studied within nonrelativistic QCD. In our analysis we have found that the production of some of the $P$-wave charmonia mesons with $L_z \neq 0$ is allowed already at the leading twist approximation. This means that the selection rules which predict the suppression of such decays are violated. The mechanism which lies behind this violation is discussed.
Braguta Victor
Likhoded A. K.
Luchinsky A. V.
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