• Open Access

Data-based analysis of the forward-backward asymmetry in B±K±KK±

Rui Hu and Zhen-Hua Zhang
Phys. Rev. D 105, 093007 – Published 19 May 2022

Abstract

An analysis of the forward-backward asymmetry (FBA) in the decay B±K±KK± is carried out based on the LHCb data. It is found that the large FBA observed for the invariant mass of the K+K pair around 1.5 GeV can be explained by the interference of the amplitudes between the resonances with even and odd spins, where the former can be the spin-0 f0(1500) resonance plus a nonresonance s wave, while the latter is a spin-1 resonance which is probably ρ0(1450). This is in contradiction with the conclusion of former experimental analysis [e.g., BABAR, Phys. Rev. D 85, 112010 (2012)], according to which the analysis showed no signal of spin-odd resonances at all when the invariant mass of the K+K pair was around 1.5 GeV. According to the analysis of the current paper the existence of the spin-odd resonances such as ρ0(1450) is inevitable for the explanation of the large FBA in this region. The analysis also shows that the CP asymmetry of the decay channel B±ρ0(1450)K± is about (3.4±3.0)%. We suggest our experimental colleagues perform a closer analysis of this channel. We also suggest to perform the measurements of the FBAs (as well as the forward-backward CP asymmetry) in other three-body decay channels of beauty and charmed mesons, as this is helpful for resonance analysis.

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  • Received 22 January 2022
  • Accepted 9 May 2022

DOI:https://doi.org/10.1103/PhysRevD.105.093007

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
  1. Physical Systems
  1. Properties
Particles & Fields

Authors & Affiliations

Rui Hu and Zhen-Hua Zhang*

  • School of Nuclear Science and Technology, University of South China, Hengyang, 421001, Hunan, China

  • *zhangzh@usc.edu.cn

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Issue

Vol. 105, Iss. 9 — 1 May 2022

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