Measurement of the Xi(-)(b) and Omega(-)(b) baryon lifetimes

R. Aaij, J.F.J. van den Brand, L.C. Garcia, K. De Bruyn, C. Farinelli, V.A.M. Heijne, T.J. Ketel, R. Koopman, D.M. Lambert, R.W. Lambert, J. van Leerdam, Y.J. Li, M.H.M. Merk, S. Oggero, H.G. Raven, M. Schiller, V. Syropoulos, S. Tolk, M. Garcia, S. Wu

Research output: Contribution to JournalArticleAcademicpeer-review


Using a data sample of pp collisions corresponding to an integrated luminosity of 3 fb-1, the Ξb- and Ωb- baryons are reconstructed in the Ξb-→J/ψΞ- and Ωb-→J/ψΩ- decay modes and their lifetimes measured to beτ(Ξb-)=1.55-0.09+0.10(stat)±0.03(syst)ps,τ(Ωb-)=1.54-0.21+0.26(stat)±0.05(syst)ps. These are the most precise determinations to date. Both measurements are in good agreement with previous experimental results and with theoretical predictions. © 2014 The Authors.
Original languageEnglish
Pages (from-to)154-162
JournalPhysics Letters B
Publication statusPublished - 2014

Bibliographical note

PT: J; NR: 38; TC: 3; J9: PHYS LETT B; PG: 9; GA: AO6UR; UT: WOS:000341487800020


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