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

Authors
CHEN K GOLDSTEIN GR JAFFE RL JI XD
Citation
K. Chen et al., PROBING QUARK FRAGMENTATION FUNCTIONS FOR SPIN-1 2 BARYON PRODUCTION IN UNPOLARIZED E(+)E(-) ANNIHILATION/, Nuclear physics. B, 445(2-3), 1995, pp. 380-396
Citations number
13
Categorie Soggetti
Physics, Nuclear
Journal title
Nuclear physics. B → ACNP
ISSN journal
05503213
Volume
445
Issue
2-3
Year of publication
1995
Pages
380 - 396
Database
ISI
SICI code
0550-3213(1995)445:2-3<380:PQFFFS>2.0.ZU;2-5
Abstract
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 we ak 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.