Observation of the Bc+→J/ψπ+π0 decay

The LHCb Collaboration

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

The first observation of the Bc+→J/ψπ+π0 decay is reported with high significance using proton-proton collision data, corresponding to an integrated luminosity of 9 fb−1, collected with the LHCb detector at centre-of-mass energies of 7, 8, and 13 TeV. The ratio of its branching fraction relative to the Bc+→J/ψπ+ channel is measured to be (Formula presented.) where the first uncertainty is statistical, the second systematic and the third related to imprecise knowledge of the branching fractions for B+ → J/ψK*+ and Bc +→J/ψπ+ decays, which are used to determine the π0 detection efficiency. The π+π0 mass spectrum is found to be consistent with the dominance of an intermediate ρ+ contribution in accordance with a model based on QCD factorisation.

Original languageEnglish
Article number151
JournalJournal of High Energy Physics
Volume2024
Issue number4
Early online date30 Apr 2024
DOIs
Publication statusPublished - 2024

Bibliographical note

Publisher Copyright:
© The Author(s) 2024.

Keywords

  • B Physics
  • Hadron-Hadron Scattering
  • QCD
  • Spectroscopy

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