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Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/42315
Title: Measurement of b Hadron Lifetimes in Exclusive Decays Containing a J/ψ in pp̅ Collisions at √s=1.96  TeV
Authors: Aaltonen, T.; Álvarez González, B.; Casal, Bruno; Cuevas, Javier; Gómez, G.; Palencia, Enrique; Rodrigo, Teresa; Scodellaro, Luca; Vila, Iván; Vilar, Rocío; Zucchelli, S.; Cabrera, Susana; Cuenca Almenar, Cristóbal; Ruiz Jimeno, Alberto; CDF Collaboration
Issue Date: 24-Mar-2011
Publisher: American Physical Society
Citation: Physical Review Letters 106(12): 121804 (2011)
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 4.3  fb-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(Λb0)/τ(B0)=[1.020±0.030(stat)±0.008(syst)]. These are the most precise determinations of these quantities from a single experiment.
Description: 8 páginas, 2 figuras, 1 tabla.-- Grupo de trabajo: CDF Collaboration.-- PACS numbers: 13.25.Hw, 13.30.Eg, 14.20.Mr, 14.40.Nd.-- et al.
Publisher version (URL): http://dx.doi.org/10.1103/PhysRevLett.106.121804
URI: http://hdl.handle.net/10261/42315
DOI: 10.1103/PhysRevLett.106.121804
ISSN: 0031-9007
E-ISSN: 1079-7114
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