@Article{LHCbCollaborationAaij_etal2023,
author="LHCb Collaboration (Aaij, R. et al
and Jaimes Elles, S. J.
and Jashal, B. K.
and Martinez-Vidal, F.
and Oyanguren, A.
and Rebollo De Miguel, M.
and Remon Alepuz, C.
and Ruiz Vidal, J.
and Sanderswood, I.",
title="Observation of the B0s {\textrightarrow} D*+ D*- decay",
journal="Journal of High Energy Physics",
year="2023",
publisher="Springer",
volume="07",
number="7",
pages="119--19pp",
optkeywords="Branching fraction; Hadron-Hadron Scattering",
abstract="The first observation of the B-s(0) -> D*+ D*- decay and the measurement of its branching ratio relative to the B-0 -> D*+ D*(-) decay are presented. The data sample used corresponds to an integrated luminosity of 9 fb(-1) of proton-proton collisions recorded by the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV between 2011 and 2018. The decay is observed with more than 10 standard deviations and the time-integrated ratio of branching fractions is determined to be [GRAPHICS] . where the first uncertainty is statistical, the second systematic and the third due to the uncertainty of the fragmentation fraction ratio f(s)/f(d). The B-s(0) -> D*(+) D*(-) branching fraction is calculated to be [GRAPHICS] . where the fourth uncertainty is due to the B-0 -> D*(+) D*(-) branching fraction. These results are calculated using the average B-s(0) meson lifetime in simulation. Correction factors are reported for scenarios where either a purely heavy or a purely light B-s(0) eigenstate is considered.",
optnote="WOS:001061773900001",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5741), last updated on Wed, 10 Apr 2024 12:41:02 +0000",
issn="1029-8479",
doi="10.1007/JHEP07(2023)119",
opturl="https://arxiv.org/abs/2210.14945",
opturl="https://doi.org/10.1007/JHEP07(2023)119",
language="English"
}