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Measurement of the B0 s --> J/psK0 S effective lifetime from proton-proton collisions at s = 13 TeV

Abstract: The effective lifetime of the B0 s meson in the decay B0 s - J/uK0 S is measured using data collected during 2016-2018 with the CMS detector in vs = 13TeV proton-proton collisions at the LHC, corresponding to an integrated luminosity of 140fb-1. The effective lifetime is determined by performing a two-dimensional unbinned maximum likelihood fit to the B0 s 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.

Autoría: Hayrapetyan A., Tumasyan A., Adam W., Andrejkovic J.W., Bergauer T., Chatterjee S., Damanakis K., Dragicevic M., Hussain P.S., Jeitler M., Krammer N., Li A., Liko D., Mikulec I., Schieck J., Schöfbeck R., Schwarz D., Sonawane M., Waltenberger W., Wulz C.E., Janssen T., Van Laer T., Van Mechelen P., Breugelmans N., D’Hondt J., Dansana S., De Moor A., Delcourt M., Heyen F., Lowette S., Makarenko I., Müller D., Tavernier S., Tytgat M

Fuente: Journal of High Energy Physics, 2024, 2024, 247

Editorial: Springer Nature

Fecha de publicación: 31/10/2024

Nº de páginas: 40

Tipo de publicación: Artículo de Revista

DOI: 10.1007/JHEP10(2024)247

ISSN: 1126-6708,1029-8479

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