LEPTON SPECTRA AS A MEASURE OF B-QUARK POLARIZATION AT LEP

被引：47

作者：

MELE, B ^{[1
]}

ALTARELLI, G ^{[1
]}

机构：

[1] CERN,CH-1211 GENEVA 23,SWITZERLAND

来源：

PHYSICS LETTERS B | 1993年 / 299卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(93)90272-J

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

At LEP, b quarks are produced in Z decays with a large longitudinal polarization. A possible strategy for detecting some polarization effect through the study of the leptonic energy spectrum in the inclusive semi-leptonic decay of b hadrons is studied in detail. We especially focus on the large theoretical uncertainties due to the ambiguities on the b-fragmentation function. The related uncertainties in the lepton spectrum, which could fake polarization effects, can be controlled, by making use of both LEP data and lower-energy PETRA data on b production. A first comparison with experimental results is shown as well.

引用

页码：345 / 350

页数：6

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