Measurement of the Lambda(0)(b) lifetime using semileptonic decays
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Undergraduate course
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Amer Physical Soc
American Physical Society (APS)
American Physical Society (APS)
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Abstract
We report a measurement of the Lambda(0)(b) lifetime using a sample corresponding to 1.3 fb(-1) of data collected by the D0 experiment in 2002-2006 during run II of the Fermilab Tevatron collider. The Lambda(0)(b) baryon is reconstructed via the decay Lambda(0)(b)->mu(nu) over bar Lambda X-+(c). Using 4437 +/- 329 signal candidates, we measure the Lambda(0)(b) lifetime to be tau(Lambda(0)(b))=1.290(-0.110)(+0.119)(stat)(-0.091)(+0.087)(syst) ps, which is among the most precise measurements in semileptonic Lambda(0)(b) decays. This result is in good agreement with the world average value.
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English
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Physical Review Letters. College Pk: Amer Physical Soc, v. 99, n. 18, 7 p., 2007.
