Measurement of the B&lt;sub&gt;s&lt;/sub&gt;&lt;sup&gt;0&lt;/sup&gt; → J/ψK&lt;sub&gt;S&lt;/sub&gt;&lt;sup&gt;0&lt;/sup&gt; effective lifetime from proton-proton collisions at √s = 13 TeV

Hayrapetyan, A.; Tumasyan, A.; Adam, W.; Andrejkovic, J.W.; Bergauer, T.; Chatterjee, S.; Damanakis, K.; Dragicevic, M.; Hussain, P.S.; Jeitler, M.; Bevilacqua, T.; Caminada, L.; Ebrahimi, A.; Erdmann, W.; Horisberger, R.; Ingram, Q.; Kaestli, H.C.; Kotlinski, D.; Lange, C.; Missiroli, M.; Noehte, L.; Rohe, T.; Makarenko, V.

doi:10.1007/JHEP10(2024)247

Measurement of the B_s⁰ → J/ψK_S⁰ effective lifetime from proton-proton collisions at √s = 13 TeV

Hayrapetyan A, Tumasyan A, Adam W, Andrejkovic JW, Bergauer T, Chatterjee S, Damanakis K, Dragicevic M, Hussain PS, Jeitler M, Bevilacqua T, Caminada L, Ebrahimi A, Erdmann W, Horisberger R, Ingram Q, Kaestli HC, Kotlinski D, Lange C, Missiroli M, Noehte L, Rohe T, Makarenko V, et al.

Citation

Hayrapetyan, A., Tumasyan, A., Adam, W., Andrejkovic, J. W., Bergauer, T., Chatterjee, S., … Makarenko, V. (2024). Measurement of the B_s⁰ → J/ψK_S⁰ effective lifetime from proton-proton collisions at √s = 13 TeV. Journal of High Energy Physics, 2024(10), 247 (39 pp.). https://doi.org/10.1007/JHEP10(2024)247

Persistent URL https://www.dora.lib4ri.ch/psi/islandora/object/psi:67488

The effective lifetime of the B_s⁰ meson in the decay B_s⁰→J/ψK_S⁰ 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 B_s⁰ 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.

Details

Publication Type

Journal Article

Title

Measurement of the B_s⁰ → J/ψK_S⁰ effective lifetime from proton-proton collisions at √s = 13 TeV

Author(s)