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

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URI: https://hdl.handle.net/10902/36088
ISSN: 1126-6708
ISSN: 1029-8479
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Autoría
Hayrapetyan, A.; Tumasyan, A.; Bhowmik, Sandeep; Blanco Fernández, SergioAutoridad Unican; Cabrillo Bartolomé, José IbánAutoridad Unican; Calderón Tazón, AliciaAutoridad Unican; Duarte Campderros, JorgeAutoridad Unican; Fernández García, MarcosAutoridad Unican; Gómez Gramuglio, GervasioAutoridad Unican; Lasaosa García, Clara; López Ruiz, Rubén; Martínez Rivero, Celso; Martínez Ruiz del Árbol, PabloAutoridad Unican; Matorras Weinig, FranciscoAutoridad Unican; Matorras Cuevas, PabloAutoridad Unican; Navarrete Ramos, Efrén; Piedra Gómez, JonatanAutoridad Unican; Scodellaro, LucaAutoridad Unican; Vila Álvarez, IvánAutoridad Unican; [et al.]
Fecha
2024-10-31
Derechos
© The Authors. Article funded by SCOAP3.
Publicado en
Journal of High Energy Physics, 2024, 2024, 247
Editorial
Springer Nature
Palabras clave
B Physics
Hadron-Hadron Scattering
Lifetime
Resumen/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.
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© The Authors. Article funded by SCOAP3.Excepto si se señala otra cosa, la licencia del ítem se describe como © The Authors. Article funded by SCOAP3.