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Precision measurement of the Λb(0) baryon lifetime.

Abstract:

The ratio of the Λb(0) baryon lifetime to that of the B(0) meson is measured using 1.0  fb(-1) of integrated luminosity in 7 TeV center-of-mass energy pp collisions at the LHC. The Λb(0) baryon is observed for the first time in the decay mode Λb(0)→J/ψpK-, while the B(0) meson decay used is the well known B(0)→J/ψπ+ K- mode, where the π+ K- mass is consistent with that of the K(*0)(892) meson. The ratio of lifetimes is measured to be 0.976±0.012±0.006, in agreement with theoretical expectatio...

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Publication status:
Published

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Journal:
Physical review letters
Volume:
111
Issue:
10
Pages:
102003
Publication date:
2013-09-05
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:2f526214-aa9a-4049-a58f-f7959fa25428
Source identifiers:
414375
Local pid:
pubs:414375
Language:
English
Keywords:

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