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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 CSIC; Cuevas, Javier CSIC ORCID; Gómez, Gervasio CSIC ORCID ; Palencia, Enrique CSIC ORCID; Rodrigo, Teresa CSIC ORCID ; Scodellaro, Luca CSIC ORCID ; Vila, Iván CSIC ORCID; Vilar Cortabitarte, R. CSIC ORCID; Zucchelli, S.; Cabrera, Susana CSIC ORCID; Cuenca Almenar, Cristóbal CSIC; Ruiz Jimeno, Alberto CSIC ORCID ; 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 |
Appears in Collections: | (IFIC) Artículos (IFCA) Artículos |
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