LHCb CollaborationAdeva Andany, BernardoÁlvarez Cartelle, PaulaDosil Suárez, ÁlvaroFernández Albor, Víctor ManuelGallas Torreira, Abraham AntonioGarcía Pardiñas, JuliánHernando Morata, José ÁngelPazos Álvarez, AntonioPérez Trigo, EliseoPlo Casasus, MáximoRomero Vidal, AntonioSaborido Silva, Juan JoséSanmartín Sedes, BraisSantamarina Ríos, CibránSeco Miguélez, Marcos AntonioVázquez Regueiro, PabloVázquez Sierra, CarlosVieites Díaz, María2020-04-282020-04-282014The LHCb Collaboration et al. (2014). Observation of B0s →K*∓ K∓ and evidence for B0s →K* −π+ decays. New J. Phys. 16, 1230011367-2630http://hdl.handle.net/10347/21831Measurements of the branching fractions of B0s→K∗±K∓ and B0s→K∗±π∓ decays are performed using a data sample corresponding to 1.0 fb−1 of proton-proton collision data collected with the LHCb detector at a centre-of-mass energy of 7TeV, where the K∗± mesons are reconstructed in the K0Sπ± final state. The first observation of the B0s→K∗±K∓ decay and the first evidence for the B0s→K∗−π+ decay are reported with branching fractions B(B0s→K∗±K∓)B(B0s→K∗−π+)==(12.7±1.9±1.9)×10−6, (3.3±1.1±0.5)×10−6, where the first uncertainties are statistical and the second are systematic. In addition, an upper limit of B(B0→K∗±K∓)<0.4 (0.5)×10−6 is set at 90 confidence level.eng© 2014 CERN. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded by SCOAPhttps://creativecommons.org/licenses/by/3.0/Flavour physicsB physicsBranching fractionjournal article10.1088/1367-2630/16/12/123001open access