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Report number arXiv:1905.09244 ; LHCb-PAPER-2018-051 ; CERN-EP-2019-062 ; LHCB-PAPER-2018-051
Title Amplitude analysis of B±π±K+K decays
Related titleAmplitude analysis of B±π±K+K decays
Author(s) LHCb Collaboration  Visa alla 846 författare
Publication 2019-12-07
Imprint 03 Jun 2019
Number of pages 11
In: Phys. Rev. Lett. 123 (2019) 231802
DOI 10.1103/PhysRevLett.123.231802
Subject category Particle Physics - Experiment ; hep-ex
Accelerator/Facility, Experiment CERN LHC ; LHCb
Abstract The first amplitude analysis of the B±π±K+K decay is reported based on a data sample corresponding to an integrated luminosity of 3.0 fb1 of pp collisions recorded in 2011 and 2012 with the LHCb detector. The data is found to be best described by a coherent sum of five resonant structures plus a nonresonant component and a contribution from ππKK S-wave rescattering. The dominant contributions in the π±K and K+K systems are the nonresonant and the B±ρ(1450)0π± amplitudes, respectively, with fit fractions around 30. For the rescattering contribution, a sizeable fit fraction is observed. This component has the largest CP asymmetry reported to date for a single amplitude of (66±4±2)%, where the first uncertainty is statistical and the second systematic. No significant CP violation is observed in the other contributions.
Copyright/License preprint: © 2019-2024 CERN (License: CC-BY-4.0)
publication: © 2019-2024 CERN (License: CC-BY-4.0)



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 Journalen skapades 2019-06-03, och modifierades senast 2024-10-02


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