Journal article

Measurement of the Lambda b0 lifetime in Lambda b0--&gt;J/psi Lambda 0 in pp collisions at square root s=1.96 TeV.

Abstract:
We report a measurement of the Lambda b0 lifetime in the exclusive decay Lambda b0-->J/psi Lambda 0 in pp collisions at square root s=1.96 TeV using an integrated luminosity of 1.0 fb-1 of data collected by the CDF II detector at the Fermilab Tevatron. Using fully reconstructed decays, we measure tau(Lambda b0)=1.593(-0.078)(+0.083)(stat)+/-0.033(syst) ps. This is the single most precise measurement of tau(Lambda b0) and is 3.2sigma higher than the current world average.

Authors

Journal:
Physical Review Letters
Volume:
98
Issue:
12
Pages:
122001
Publication date:
2007-03-01
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Source identifiers:
154987
Language:
English
Keywords:
Pubs id:
pubs:154987
UUID:
uuid:4ac44514-aff3-41e4-aaa9-1dffa8af9160
Local pid:
pubs:154987
Deposit date:
2012-12-19