Measurement of the B⁰ₛ → J/ψK⁰ₛ effective lifetime from proton-proton collisions at √s = 13 TeV
Year: 2024
Type: article
Abstract: The effective lifetime of the B⁰ₛ meson in the decay B⁰ₛ → J/ψK⁰ₛ is measured using data collected during 2016–2018 with the CMS detector in √s = 13 TeV proton-proton collisions at the LHC, corresponding to an integrated luminosity of 140 fb⁻¹. The effective lifetime is determined by performing a two-dimensional unbinned maximum likelihood fit to the B⁰ₛ meson invariant mass and proper decay time distributions. The resulting value of 1.59 ± 0.07(stat) ± 0.03(syst) ps is the most precise measurement to date and is in good agreement with the expected value.
Authors: The CMS collaboration, Hayrapetyan, Aram, Erdmann, Wolfram, Horisberger, Roland, Aarrestad, Thea K., Androsov, Konstantin, Backhaus, Malte, Bonomelli, Giorgia, Calandri, Alessandro, Cazzaniga, Cesare, Datta, Kaustuv, De Bryas Dexmiers D‘archiac, Paul, De Cosa, Annapaola, Dissertori, Günther, Dittmar, M., Donegà, Mauro, Eble, Florian, Galli, Massimiliano, Gedia, Krunal, Glessgen, Franz, Grab, Christophorus, Härringer, Nico, Harte, Thierry Guillaume, Hits, Dmitry Alexandrovich, Lustermann, Werner, Lyon, Anne-Mazarine, Manzoni, Riccardo Andrea, Marchegiani, Matteo, Marchese, Luigi, Martin Perez, Cristina, Mascellani, Anna, Nessi-Tedaldi, Francesca, Pauss, Felicitas, Perovic, Vasilije, Pigazzini, Simone, Ristic, Branislav, Riti, Federica, Seidita, Roberto, Steggemann, Jan, Tarabini, Alessandro, Valsecchi, Davide, Wallny, Rainer, et al.
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W6910071524
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