@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.
and Zhuo, J.",
title="Measurement of the mass difference and relative production rate of the $\Omega$b- and $\Xi$b- baryons",
journal="Physical Review D",
year="2023",
publisher="Amer Physical Soc",
volume="108",
number="5",
pages="052008--16pp",
abstract="The mass difference between the Omega -b and Xi -b baryons is measured using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb-1, and is found to be mo Omega -bthorn -- mo Xi -bthorn 1/4 248.54? 0.51ostatthorn ? 0.38osystthorn MeV=c2. The mass of the Omega -b baryon is measured to be mo Omega -bthorn 1/4 6045.9 ? 0.5ostatthorn ? 0.6osystthorn MeV=c2. This is the most precise determination of the Omega -b mass to date. In addition, the production rate of Omega -b baryons relative to that of Xi -b baryons is measured for the first time in pp collisions, using an LHCb dataset collected at a center-of-mass energy of 13 TeV and corresponding to an integrated luminosity of 6 fb-1. Reconstructing beauty baryons in the kinematic region 2 < <eta> < 6 and pT < 20 GeV=c with their decays to a J=psi meson and a hyperon, the ratio f Omega- b f Xi- b tation fractions of b quarks into Omega -b and Xi -b baryons, respectively, and B represents the branching fractions of their respective decays. Bo Omega- b -> J=psi Omega -thorn x Bo Xi- b -> J=psi Xi -thorn 1/4 0.120 ? 0.008ostatthorn ? 0.008osystthorn, is obtained, where f Omega- b and f Xi -b are the fragmen-",
optnote="WOS:001088285000001",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5832), last updated on Wed, 10 Apr 2024 12:46:17 +0000",
issn="2470-0010",
doi="10.1103/PhysRevD.108.052008",
opturl="https://arxiv.org/abs/2305.15329",
opturl="https://doi.org/10.1103/PhysRevD.108.052008",
language="English"
}