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Measurement of b hadron lifetimes in exclusive decays containing a J/ψ in pp̄ collisions at √s=1.96TeV

Abstract:

We report on a measurement of b-hadron lifetimes in the fully reconstructed decay modes B+→J/ψK+, B0→J/ ψK*(892)0, B0→J/ψKs0, and Λb0→J/ψΛ0 using data corresponding to an integrated luminosity of 4.3fb-1, collected by the CDF II detector at the Fermilab Tevatron. The measured lifetimes are τ(B+)=[1.639±0.009(stat)±0.009(syst)] ps, τ(B0)=[1.507±0.010(stat)±0.008(syst)]ps, and τ(Λb0)=[1.537±0.045(stat)±0.014(syst)]ps. The lifetime ratios are τ(B+)/τ(B0)=[1.088±0.009(stat)±0. 004(syst)] and τ(Λb...

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Authors


Aaltonen, T More by this author
Álvarez González, B More by this author
Anastassov, A More by this author
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Journal:
Physical Review Letters
Volume:
106
Issue:
12
Publication date:
2011-03-24
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:9a07d60a-7ba9-42b1-85b5-198c8c74e490
Source identifiers:
135223
Local pid:
pubs:135223
Language:
English

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