Study of b-baryons at D0 in Run II of the Tevatron

[摘要] The study of b-baryons is a unique opportunity at the Tevatron collider, which is the only running accelerator where these particles are expected to be produced. At the beginning of RunII of the Tevatron and after almost 30 years of the discovery of the b quark at Fermilab, the lack of statistics had restricted our knowledge on b-baryons to the observation of the lightest b-baryon, the {Lambda}{sub b}, and to its lifetime measured in decays which did not allow a fully reconstruction of this particle. I present results of the search for b-baryons in the D0 experiment. As part of this program, a precise measurement of the {Lambda}{sub b} lifetime was performed, and the discovery of the {Xi}{sub b}{sup -} resulted from an analysis of 1.3 fb{sup -1} of data collected with the D0 detector during 2002-2006.

[发布日期] 2008-04-01

[学科分类] 物理（综合）

[关键词] ACCELERATORS;B QUARKS;FERMILAB;FERMILAB TEVATRON;LIFETIME;STATISTICS Experiment-HEP