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Measurement of the Lambda b0 lifetime in Lambda b0-->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.

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Journal:
Physical review letters
Volume:
98
Issue:
12
Pages:
122001
Publication date:
2007-03-05
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:4ac44514-aff3-41e4-aaa9-1dffa8af9160
Source identifiers:
154987
Local pid:
pubs:154987
Language:
English
Keywords:

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