摘要
At the large transverse momentum region, the production of heavy-heavy bound states such as charmonium, bottomonium, and bc mesons in high energy e + e- and hadronic collisions is dominated by parton fragmentation. We calculate the heavy quark fragmentation functions into the D-wave quarkonium and bc mesons to leading order in the strong coupling constant and in the nonrelativistic expansion. In the bc meson case, one set of its D-wave states is expected to lie below the open flavor threshold. The total fragmentation probability for a b antiquark to split into the D-wave bc mesons is about 2× 10 -5 , which implies that only 2% of the total pseudoscalar ground state B c comes from the cascades of these orbitally excited states. © 1996 The American Physical Society.