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Title: Measurement of the branching fraction of the decay B-s(0) -> (KSKS0)-K-0
Author: Alfonso Albero, Alejandro
Calvo Gómez, Míriam
Camboni, Alessandro
Coquereau, Samuel
Garrido Beltrán, Lluís
Gascón Fora, David
Gironella Gironell, Pere
Golobardes, Elisabet
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
Manera Escalero, R.
Vázquez Gómez, Ricard
Vilasis-Cardona, Xavier
Cartelle, P. Alvarez
LHCb Collaboration
Keywords: Gran Col·lisionador d'Hadrons
Mesons (Física nuclear)
Large Hadron Collider (France and Switzerland)
Mesons (Nuclear physics)
Issue Date: 31-Jul-2020
Publisher: American Physical Society
Abstract: A measurement of the branching fraction of the decay B0s→K0SK0S is performed using proton-proton collision data corresponding to an integrated luminosity of 5  fb−1 collected by the LHCb experiment between 2011 and 2016. The branching fraction is determined to be B(B0s→K0SK0S)= [8.3±1.6(stat)±0.9(syst)±0.8(norm)±0.3(fs/fd)]×10−6, where the first uncertainty is statistical, the second is systematic, and the third and fourth are due to uncertainties on the branching fraction of the normalization mode B0→ϕK0S and the ratio of hadronization fractions fs/fd. This is the most precise measurement of this branching fraction to date. Furthermore, a measurement of the branching fraction of the decay B0→K0SK0S is performed relative to that of the B0s→K0SK0S channel, and is found to be B(B0→K0SK0S)B(B0s→K0SK0S)=[7.5±3.1(stat)±0.5(syst)±0.3(fs/fd)]×10−2.
Note: Reproducció del document publicat a:
It is part of: Physical Review D, 2020, vol. 102, num. 1, p. 012011
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ISSN: 2470-0010
Appears in Collections:Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))
Articles publicats en revistes (Física Quàntica i Astrofísica)

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