LHCb CollaborationAdeva Andany, BernardoBorsato, MartinoChobanova, VeronikaDosil Suárez, ÁlvaroFernández Albor, Víctor ManuelGallas Torreira, Abraham AntonioGarcía Pardiñas, JuliánHernando Morata, José ÁngelLemos Cid, EdgarLucio Martínez, MiriamMartínez Santos, DiegoPlo Casasus, MáximoPrisciandaro, JessicaRamos Pernas, MiguelRomero Vidal, AntonioSaborido Silva, Juan JoséSanmartín Sedes, BraisSantamarina Ríos, CibránVázquez Regueiro, PabloVázquez Sierra, CarlosVieites Díaz, María2020-05-122020-05-122016Aaij, R., Abellán Beteta, C., Adeva, B. et al. Measurement of the properties of the Ξ ∗ 0b baryon. J. High Energ. Phys. 2016, 161 (2016). https://doi.org/10.1007/JHEP05(2016)1611029-8479http://hdl.handle.net/10347/22220We perform a search for near-threshold Ξ 0b resonances decaying to Ξ −b π + in a sample of proton-proton collision data corresponding to an integrated luminosity of 3 fb−1 collected by the LHCb experiment. We observe one resonant state, with the following properties: m(Ξ∗0b)−m(Ξ−b)−m(π+)=15.727±0.068(stat)±0.023(syst)MeV/c2Γ(Ξ∗0b)=0.90±0.16(stat)±0.08(syst)MeV. This confirms the previous observation by the CMS collaboration. The state is consistent with the J P = 3/2+  Ξ ∗ 0b resonance expected in the quark model. This is the most precise determination of the mass and the first measurement of the natural width of this state. We have also measured the ratio σ(pp→Ξ∗0bX)B(Ξ∗0b→Ξ−bπ+)σ(pp→Ξ−bX)=0.28±0.03(stat.)±0.01(syst.).eng© CERN, for the benefit of the LHCb Collaboration. Article funded by SCOAP3. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.https://creativecommons.org/licenses/by/4.0/SpectroscopyB physicsParticle and resonance productionHadron-Hadron scattering (experiments)journal article10.1007/JHEP05(2016)161open access