Amplitude analysis of 𝐡0→‾𝐷0⁒𝐷+π‘ β’πœ‹βˆ’ and 𝐡+β†’π·βˆ’β’π·+π‘ β’πœ‹+ decays

LHCb collaboration, R.H. O'Neil, M. Richardson-Slipper, C. Vrahas

Research output: Contribution to journal β€Ί Article β€Ί peer-review

Abstract / Description of output

Resonant contributions in 𝐡0→¯𝐷⁒0𝐷+π‘ β’πœ‹βˆ’ and 𝐡+β†’π·βˆ’β’π·+π‘ β’πœ‹+ decays are determined with an amplitude analysis, which is performed both separately and simultaneously, where in the latter case isospin symmetry between the decays is assumed. The analysis is based on data collected by the LHCb detector in proton-proton collisions at center-of-mass energies of 7, 8, and 13 TeV. The full data sample corresponds to an integrated luminosity of 9  fbβˆ’1. A doubly charged spin-0 open-charm tetraquark candidate together with a neutral partner, both with masses near 2.9 GeV, are observed in the π·π‘ β’πœ‹ decay channel.
Original languageEnglish
Article number012017
Pages (from-to)1-30
Number of pages30
JournalPhysical Review D
Volume108
Issue number1
DOIs
Publication statusPublished - 27 Jul 2023

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