LHCb CollaborationAdeva Andany, BernardoÁlvarez Cartelle, PaulaDosil Suárez, ÁlvaroFernández Albor, Víctor ManuelGallas Torreira, Abraham AntonioHernando Morata, José ÁngelPazos Álvarez, AntonioPlo Casasus, MáximoRomero Vidal, AntonioSaborido Silva, Juan JoséSanmartín Sedes, BraisSantamarina Ríos, CibránSeco Miguélez, Marcos AntonioVázquez Regueiro, PabloVázquez Sierra, CarlosVieites Díaz, María2020-05-082020-05-082014Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Albrecht, J., ... & Cartelle, P. A. (2014). Measurement of the Ξ−b and Ω−b baryon lifetimes. Physics Letters B, 736, 154-1620370-2693http://hdl.handle.net/10347/22143Using a data sample of ppcollisions corresponding to an integrated luminosity of 3fb−1, the Ξ−band Ω−bbaryons are reconstructed in the Ξ−b→J/ψΞ−and Ω−b→J/ψΩ−decay modes and their lifetimes measured to be τ Ξ − b = 1.55+0.10 −0.09 (stat)±0.03 (syst) ps, τ Ω − b = 1.54+0.26 −0.21 (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 predictionseng©2014 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/3.0/). Funded by SCOAP3.http://creativecommons.org/licenses/by/3.0/journal article10.1016/j.physletb.2014.06.0641873-2445open access