Measurement of the Branching Fractions B (B0 →p p ¯ p p ¯) and B (Bs0 →p p ¯ p p ¯)

LHCb Collaboration, K. De Bruyn, M. D. Galati, C. J. G. Onderwater, A. Pellegrino

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Searches for the rare hadronic decays B0→pp¯pp¯ and Bs0→pp¯pp¯ are performed using proton-proton collision data recorded by the LHCb experiment and corresponding to an integrated luminosity of 9 fb-1. Significances of 9.3σ and 4.0σ, including statistical and systematic uncertainties, are obtained for the B0→pp¯pp¯ and Bs0→pp¯pp¯ signals, respectively. The branching fractions are measured relative to the topologically similar normalization decays B0→J/ψ(→pp¯)K∗0(→K+π-) and Bs0→J/ψ(→pp¯)⁢φ(→K+K-). The branching fractions are measured to be B(B0→pp¯pp¯)=(2.2±0.4±0.1±0.1)×10-8 and B(Bs0→pp¯pp¯)=(2.3±1.0±0.2±0.1)×10-8. In these measurements, the first uncertainty is statistical, the second is systematic, and the third one is due to the external branching fraction of the normalization channel.

Originele taal-2English
Artikelnummer091901
Aantal pagina's11
TijdschriftPhysical Review Letters
Volume131
Nummer van het tijdschrift9
DOI's
StatusPublished - 1-sep.-2023

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