POLARIZATION EFFECTS IN EXCLUSIVE SEMI-LEPTONIC-LAMBDA-C AND SEMI-LEPTONIC-LAMBDA-B CHARM AND BOTTOM BARYON DECAYS

被引：92

作者：

KORNER, JG

KRAMER, M

机构：

[1] Institut für Physik, Johannes Gutenberg Universität, W-6500 Mainz, Staudinger Weg 7

[2] Deutsches Elektronen-Synchrotron DESY

来源：

PHYSICS LETTERS B | 1992年 / 275卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(92)91623-H

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss polarization effects in semi-leptonic decays of polarized and unpolarized heavy A-type baryons into heavy and into light A-type baryons. We use the non-leptonic decay of the daughter baryon and the leptonic decay of the W(off-shell) into a lepton pair as polarization analyzers to analyze the polarization of the daughter baryon and the W(off-shell). Technically this is done by writing down joint angular decay distributions. We calculate the values of the various asymmetry parameters that characterize the angular dependence of the angular decay distributions where we use the predictions of the heavy quark effective theory (HQET) supplemented by simple ansatze for the q2-dependence of the form factors.

引用

页码：495 / 505

页数：11

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