About: Measurement of the Lambda^0_b Lifetime in the Decay Lambda^0

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About: Measurement of the Lambda^0_b Lifetime in the Decay Lambda^0_b -> J/psi Lambda^0 with the D0 Detector Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Publikace popisuje měření doby života Lambda^0_b v rozpadu Lambda^0_b -> J/psi Lambda^0 s D0 detektorem. (cs) We present measurements of the Lambda^0_b lifetime in the exclusive decay channel Lambda^0_{b}->J/psi Lambda^0, with J/psi to mu+ mu- and Lambda^0 to p pi-, the B^0 lifetime in the decay B^0 -> J/psi K^0_S with J/psi to mu+ mu- and K^0_S to pi+ pi-, and the ratio of these lifetimes. The analysis is based on approximately 250 pb^{-1} of data recorded with the D0 detector in pp(bar) collisions at sqrt{s}=1.96 TeV. The Lambda^0_b lifetime is determined to be tau(Lambda^0_b) = 1.22 +0.22/-0.18 (stat) +/- 0.04 (syst) ps, the B^0 lifetime tau(B^0) = 1.40 +0.11/-0.10 (stat) +/- 0.03 (syst) ps, and the ratio tau(Lambda^0_b)/tau(B^0) = 0.87 +0.17/-0.14 (stat) +/- 0.03 (syst). In contrast with previous measurements using semileptonic decays, this is the first determination of the Lambda^0_b lifetime based on a fully reconstructed decay channel We present measurements of the Lambda^0_b lifetime in the exclusive decay channel Lambda^0_{b}->J/psi Lambda^0, with J/psi to mu+ mu- and Lambda^0 to p pi-, the B^0 lifetime in the decay B^0 -> J/psi K^0_S with J/psi to mu+ mu- and K^0_S to pi+ pi-, and the ratio of these lifetimes. The analysis is based on approximately 250 pb^{-1} of data recorded with the D0 detector in pp(bar) collisions at sqrt{s}=1.96 TeV. The Lambda^0_b lifetime is determined to be tau(Lambda^0_b) = 1.22 +0.22/-0.18 (stat) +/- 0.04 (syst) ps, the B^0 lifetime tau(B^0) = 1.40 +0.11/-0.10 (stat) +/- 0.03 (syst) ps, and the ratio tau(Lambda^0_b)/tau(B^0) = 0.87 +0.17/-0.14 (stat) +/- 0.03 (syst). In contrast with previous measurements using semileptonic decays, this is the first determination of the Lambda^0_b lifetime based on a fully reconstructed decay channel (en)
Title	Measurement of the Lambda^0_b Lifetime in the Decay Lambda^0_b -> J/psi Lambda^0 with the D0 Detector Měření doby života Lambda^0_b v rozpadu Lambda^0_b -> J/psi Lambda^0 s D0 detektorem (cs) Measurement of the Lambda^0_b Lifetime in the Decay Lambda^0_b -> J/psi Lambda^0 with the D0 Detector (en)
skos:prefLabel	Measurement of the Lambda^0_b Lifetime in the Decay Lambda^0_b -> J/psi Lambda^0 with the D0 Detector Měření doby života Lambda^0_b v rozpadu Lambda^0_b -> J/psi Lambda^0 s D0 detektorem (cs) Measurement of the Lambda^0_b Lifetime in the Decay Lambda^0_b -> J/psi Lambda^0 with the D0 Detector (en)
skos:notation	RIV/68407700:21670/05:15117974!RIV06-MSM-21670___
http://linked.open.../vavai/riv/strany	102001-1 ; 102001-7
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(1P05LA257), P(GP202/05/P583), P(LC527), Z(MSM6840770029)
http://linked.open...iv/cisloPeriodika	94
http://linked.open...vai/riv/dodaniDat	2006
http://linked.open...aciTvurceVysledku	Smolek, Karel Šimák, Vladislav
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	České vysoké učení technické v Praze / Ústav technické a experimentální fyziky ČVUT
http://linked.open...dnocenehoVysledku	529236
http://linked.open...ai/riv/idVysledku	RIV/68407700:21670/05:15117974
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	D0; Fermilab (en)
http://linked.open.../riv/klicoveSlovo	D0 Fermilab
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[C1F3C1587771]
http://linked.open...i/riv/nazevZdroje	Physical Review Letters
http://linked.open...in/vavai/riv/obor	BF
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	536 (xsd:int)
http://linked.open...vavai/riv/projekt	Collaboration on the DO experiment at FNAL, USA Center for Particle Physics A precise measurement of the top quark mass
http://linked.open...UplatneniVysledku	2005
http://linked.open...v/svazekPeriodika	2005
http://linked.open...iv/tvurceVysledku	Smolek, Karel Šimák, Vladislav
http://linked.open...n/vavai/riv/zamer	Fundamental Experiments in Physics of Microworld
issn	0031-9007
number of pages	7 (xsd:int)
http://localhost/t...ganizacniJednotka	21670

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