Measurement of the Lambda_b^0 lifetime using semileptonic decays.

Bertram, I. A. and Borissov, Guennadi and Fox, H. and Ratoff, Peter N. (2007) Measurement of the Lambda_b^0 lifetime using semileptonic decays. Physical review letters, 99 (18). p. 182001.

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Abstract

We report a measurement of the lifetime using a sample corresponding to 1.3 fb-1 of data collected by the D0 experiment in 2002–2006 during run II of the Fermilab Tevatron collider. The baryon is reconstructed via the decay µX. Using 4437±329 signal candidates, we measure the lifetime to be ()=1.290(stat)(syst) ps, which is among the most precise measurements in semileptonic decays. This result is in good agreement with the world average value.

Item Type:

Journal Article

Journal or Publication Title:

Physical review letters

Additional Information:

Bertram was involved in the preparation of simulated signal samples and the muon trigger implementation. This is the most precise measurement of the Lambda_b^0 lifetime from a single experiment in the semileptonic mode and resolved a discrepancy between the measurement of the CDF collaboration and the World average value. RAE_import_type : Journal article RAE_uoa_type : Physics

Uncontrolled Keywords:

/dk/atira/pure/subjectarea/asjc/3100

Subjects:

?? physics and astronomy(all)qc physics ??

Departments:

Faculty of Science and Technology > Physics

ID Code:

2312

Deposited By:

ep_importer

Deposited On:

02 Apr 2008 15:41