PROBING QUARK FRAGMENTATION FUNCTIONS FOR SPIN-1/2 BARYON PRODUCTION IN UNPOLARIZED E(+)E(-) ANNIHILATION

被引：34

作者：

CHEN, K

GOLDSTEIN, GR

JAFFE, RL

JI, XD

机构：

[1] MIT,DEPT PHYS,CAMBRIDGE,MA 02139

[2] TUFTS UNIV,DEPT PHYS,MEDFORD,MA 02155

来源：

NUCLEAR PHYSICS B | 1995年 / 445卷 / 2-3期

关键词：

D O I：

10.1016/0550-3213(95)00193-V

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We study the measurement of the quark fragmentation functions for spin-1/2 baryon production (Lambda and <(Lambda)over bar>, in particular) in unpolarized e(+)e(-) annihilation. The spin-dependent fragmentation functions (g) over cap(1)(z) and (h) over cap(1)(z) can be probed in the process as a result of quark-antiquark spin correlation and the weak decay of the baryons. The relevant cross section is expressed as a product of the two-jet cross section, the fragmentation functions, and the differential width of the hyperon decay.

引用

页码：380 / 396

页数：17