@article{c620b4faeea1492fa9911916a82d83c0,
title = "Observation of B0 → ψ(2S)K0Sπ+π− and B0S → ψ(2S)K0S decays",
abstract = "Using a data sample of s=13TeV proton-proton collisions collected by the CMS experiment at the LHC in 2017 and 2018 with an integrated luminosity of 103fb-1, the Bs0→ψ(2S)KS0 and B0→ψ(2S)KS0π+π- decays are observed with significances exceeding 5 standard deviations. The resulting branching fraction ratios, measured for the first time, correspond to B(Bs0→ψ(2S)KS0)/B(B0→ψ(2S)KS0)=(3.33±0.69(stat)±0.11(syst)±0.34(fs/fd))×10-2 and B(B0→ψ(2S)KS0π+π-)/B(B0→ψ(2S)KS0)=0.480±0.013(stat)±0.032(syst), where the last uncertainty in the first ratio is related to the uncertainty in the ratio of production cross sections of Bs0 and B mesons, fs/ fd.",
author = "{CMS Collaboration} and A. Tumasyan and W. Adam and Andrejkovic, {J. W.} and T. Bergauer and S. Chatterjee and K. Damanakis and M. Dragicevic and Valle, {A. Escalante Del} and R. Fr{\"u}hwirth and M. Jeitler and N. Krammer and L. Lechner and D. Liko and I. Mikulec and P. Paulitsch and Pitters, {F. M.} and J. Schieck and R. Sch{\"o}fbeck and D. Schwarz and S. Templ and W. Waltenberger and Wulz, {C. E.} and V. Chekhovsky and A. Litomin and V. Makarenko and Darwish, {M. R.} and {De Wolf}, {E. A.} and T. Janssen and T. Kello and A. Lelek and Sfar, {H. Rejeb} and Mechelen, {P. Van} and Putte, {S. Van} and Remortel, {N. Van} and Bols, {E. S.} and J. D{\textquoteright}Hondt and {De Moor}, A. and M. Delcourt and Faham, {H. El} and S. Lowette and S. Moortgat and A. Morton and D. M{\"u}ller and Sahasransu, {A. R.} and S. Tavernier and Doninck, {W. Van} and D. Vannerom and D. Beghin and B. Bilin and Jarrin, {E. Carrera}",
note = "Publisher Copyright: {\textcopyright} 2022, The Author(s).",
year = "2022",
month = may,
doi = "10.1140/epjc/s10052-022-10315-y",
language = "Ingl{\'e}s",
volume = "82",
journal = "European Physical Journal C",
issn = "1434-6044",
number = "5",
}