Heavy quark fragmentation functions for D-wave quarkonium and charmed b-flavored mesons

被引：37

作者：

Cheung, K ^{[1
]}

Yuan, TC ^{[1
]}

机构：

[1] UNIV CALIF DAVIS, DAVIS INST HIGH ENERGY PHYS, DAVIS, CA 95616 USA

来源：

PHYSICAL REVIEW D | 1996年 / 53卷 / 07期

关键词：

D O I：

10.1103/PhysRevD.53.3591

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

At the large transverse momentum region, the production of heavy-heavy bound states such as charmonium, bottomonium, and <(b)over bar c> 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 <(b)over bar c> mesons to leading order in the strong coupling constant and in the nonrelativistic expansion. In the <(b)over bar c> 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) over bar antiquark to split into the D-wave <(b)over bar c> mesons is about 2 x 10(-5), which implies that only 2% of the total pseudoscalar ground state B-c comes from the cascades of these orbitally excited states.

引用

页码：3591 / 3603

页数：13

共 57 条

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