@article{a64ba0e6f60f45c2a73034c6a716d0fe,
title = "Observation of the Λb0→J/ψΞ-K+ decay",
abstract = "Using proton–proton collision data corresponding to an integrated luminosity of 140fb-1 collected by the CMS experiment at s=13TeV, the Λb0→J/ψΞ-K+ decay is observed for the first time, with a statistical significance exceeding 5 standard deviations. The relative branching fraction, with respect to the Λb0→ψ(2S)Λ decay, is measured to be B(Λb0→J/ψΞ-K+)/B(Λb0→ψ(2S)Λ)=[3.38±1.02±0.61±0.03]%, where the first uncertainty is statistical, the second is systematic, and the third is related to the uncertainties in B(ψ(2S)→J/ψπ+π-) and B(Ξ-→Λπ-).",
author = "CMS Collaboration and A. Hayrapetyan 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 Hussain, {P. S.} and M. Jeitler and N. Krammer and D. Liko and I. Mikulec and J. Schieck and R. Sch{\"o}fbeck and D. Schwarz and M. Sonawane and S. Templ and W. Waltenberger and Wulz, {C. E.} and Darwish, {M. R.} and T. Janssen and Mechelen, {P. Van} and Bols, {E. S.} and J. D{\textquoteright}Hondt and S. Dansana and {De Moor}, A. and M. Delcourt and {El Faham}, H. and S. Lowette and I. Makarenko and D. M{\"u}ller and Sahasransu, {A. R.} and S. Tavernier and M. Tytgat and {Van Putte}, S. and D. Vannerom and B. Clerbaux and {De Lentdecker}, G. and L. Favart and D. Hohov and J. Jaramillo and A. Khalilzadeh and K. Lee and P. Elmer and D. Lange and J. Olsen and D. Stickland and C. Tully",
note = "Publisher Copyright: {\textcopyright} The Author(s) 2024.",
year = "2024",
month = oct,
doi = "10.1140/epjc/s10052-024-13114-9",
language = "English (US)",
volume = "84",
journal = "European Physical Journal C",
issn = "1434-6044",
publisher = "Springer Nature",
number = "10",
}