Observation of the semileptonic decay B+→ pp¯ μ+νμ

The Lhcb Collaboration

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

The Cabibbo-suppressed semileptonic decay B+→ pp¯ μ+νμ is observed for the first time using a sample of pp collisions corresponding to an integrated luminosity of 1.0, 2.0 and 1.7 fb−1 at centre-of-mass energies of 7, 8 and 13 TeV, respectively. The differential branching fraction is measured as a function of the pp¯ invariant mass using the decay mode B+→ J/ψK+ for normalisation. The total branching fraction is measured to be ℬ(B+→pp¯μ+νμ)=(5.27−0.24+0.23±0.21±0.15)×10−6, where the first uncertainty is statistical, the second systematic and the third is from the uncertainty on the branching fraction of the normalisation channel. [Figure not available: see fulltext.]

Original languageEnglish
Article number146
Pages (from-to)1-21
Number of pages22
JournalJournal of High Energy Physics
Volume2020
Issue number3
Early online date23 Mar 2020
DOIs
Publication statusPublished - Mar 2020

Funding

FundersFunder number
Creative Commons Attribution License
Horizon 2020 Framework Programme792684

    Keywords

    • B physics
    • Branching fraction
    • Flavor physics
    • Hadron-Hadron scattering (experiments)

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