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Measurement of the Lambda(0)(b) Lifetime in Lambda(0)(b) -> Lambda(+)(c)pi(-) Decays in p(p)over-bar Collisions at root s=1.96 TeV

Aaltonen T.
•
Adelman J.
•
Álvarez González B.
altro
Zucchelli S.
2010
  • journal article

Periodico
PHYSICAL REVIEW LETTERS
Abstract
We report a measurement of the lifetime of the Lambda(0)(b) baryon in decays to the Lambda(+)(c)pi(-) final state in a sample corresponding to 1.1 fb(-1) collected in p (p) over bar collisions at root s = 1.96 TeV by the CDF II detector at the Tevatron collider. Using a sample of about 3000 fully reconstructed Lambda(0)(b) events we measure tau(Lambda(0)(b) ) = 1.401 +/- 0.046(stat) +/- 0.035(syst) ps (corresponding to c tau(Lambda(0)(b)) = 420.1 +/- 13.7(stat) +/- 10.6(syst) mu m, where c is the speed of light). The ratio of this result and the world average B-0 lifetime yields tau(Lambda(0)(b))/tau(B-0) = 0.918 +/- 0.038 (stat) and (syst), in good agreement with recent theoretical predictions.
DOI
10.1103/PhysRevLett.104.102002
WOS
WOS:000275543500011
Archivio
http://hdl.handle.net/11390/862789
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-77949343905
Diritti
metadata only access
Web of Science© citazioni
30
Data di acquisizione
Mar 25, 2024
Visualizzazioni
1
Data di acquisizione
Apr 19, 2024
Vedi dettagli
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